Table of Contents

Preface

Product Overview

Switch Installation

Power Supply Installation

Troubleshooting

Technical Specifications

Connector and Cable Specifications

Configuring the Switch with the CLI Setup Program

higtitle

Preface

This guide describes the hardware features of the Cisco Connected Grid Switch (CGS) 2520. It describes the physical and performance characteristics of the switch, explains how to install it, and provides troubleshooting information.

This guide does not describe system messages that you might receive or how to configure your switch. See the switch software configuration guide, the switch command reference, and the switch system message guide on Cisco.com: http://www.cisco.com/go/cgs2520_docs

Conventions

This document uses the following conventions.

Conventions

Indication

bold font

Commands and keywords and user-entered text appear in bold font.

italic font

Document titles, new or emphasized terms, and arguments for which you supply values are in italic font.

[ ]

Elements in square brackets are optional.

{x | y | z }

Required alternative keywords are grouped in braces and separated by vertical bars.

[ x | y | z ]

Optional alternative keywords are grouped in brackets and separated by vertical bars.

string

A nonquoted set of characters. Do not use quotation marks around the string or the string will include the quotation marks.

courier font

Terminal sessions and information the system displays appear in courier font.

< >

Nonprinting characters such as passwords are in angle brackets.

[ ]

Default responses to system prompts are in square brackets.

!, #

An exclamation point (!) or a pound sign (#) at the beginning of a line of code indicates a comment line.

Note: Means reader take note . Notes contain helpful suggestions or references to material not covered in the manual.

Caution: Means reader be careful. In this situation, you might perform an action that could result in equipment damage or loss of data.

Warning: IMPORTANT SAFETY INSTRUCTIONS

Means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device.

SAVE THESE INSTRUCTIONS

Regulatory: Provided for additional information and to comply with regulatory and customer requirements.

The safety warnings for this product are translated into several languages in the Regulatory Compliance and Safety Information for the Cisco CGS 2520 that ships with the product on the documentation CD. The EMC regulatory statements are also included in that guide.

Related Publications

http://www.cisco.com/go/cgs2520_docs

Note: Before installing, configuring, or upgrading the switch, see the release notes on Cisco.com for the latest information.

■ Release Notes for the Cisco CGS 2520

■ Cisco CGS 2520 Getting Started Guide

■ Regulatory Compliance and Safety Information for the Cisco CGS 2520

■ Cisco CGS 2520 Software Configuration Guide

■ Cisco CGS 2520 Command Reference

■ Cisco CGS 2520 System Message Guide

■Installation Notes for the Power Supply Modules for the Cisco CGS 2520

Cisco SFP documents:

http://www.cisco.com/en/US/products/hw/modules/ps5455/prod_installation_guides_list.html

SFP compatibility matrix documents:

http://www.cisco.com/en/US/products/hw/modules/ps5455/products_device_support_tables_list.html

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, using the Cisco Bug Search Tool (BST), submitting a service request, and gathering additional information, see What’s New in Cisco Product Documentation at: http://www.cisco.com/c/en/us/td/docs/general/whatsnew/whatsnew.html .

Subscribe to What’s New in Cisco Product Documentation , which lists all new and revised Cisco technical documentation as an RSS feed and delivers content directly to your desktop using a reader application. The RSS feeds are a free service.

Product Overview

The Cisco CGS 2520 switches, also referred to as the switch , are Ethernet switches that you can connect devices such as Intelligent Electronic Devices (IEDs), distributed controllers, substation routers, Cisco IP Phones, Cisco Wireless Access Points, and other network devices such as redundant substation switches.

This section contains the following topics:

■Switch Models

■Cable Side

■Ports

■LEDs

■SD Flash Memory Card

■Power Supply Side

■Management Options

Switch Models

Note: The information in this document regarding China switches (part numbers ending with -C, for example, PWR-RGD-AC-DC-C) are identical to the non-China switches, except where specified.

Table 1 Switch Models

Model

Description

Cisco CGS-2520-24TC

24 10/100BASE-T ports, 2 dual-purpose Gigabit Ethernet ports (2 10/100/1000BASE-T ports and 2 SFP 1 module slots) and 2 AC and DC power supply module slots.

Cisco CGS-2520-24TC-C

(For China) 24 10/100BASE-T ports, 2 dual-purpose Gigabit Ethernet ports (2 10/100/1000BASE-T ports and 2 SFP module slots), and 2 AC and DC power supply module slots.

Cisco CGS-2520-16S-8PC

16 100 Mb/s SFP module slots: 8 10/100BASE-T PoE+ 2 ports, 2 dual-purpose Gigabit Ethernet ports (2 10/100/1000BASE-T ports and 2 SFP module slots), and 2 AC and DC power supply module slots.

Cisco CGS-2520-16S-8PC-C

(For China) 16 100 Mb/s SFP module slots: 8 10/100BASE-T PoE+ ports, 2 dual-purpose Gigabit Ethernet ports (2 10/100/1000BASE-T ports and 2 SFP module slots), and 2 AC and DC power supply module slots.

1 SFP = small form-factor pluggable.

2 PoE = Power over Ethernet plus (provides up to 30 W per port).

Cable Side

The 10/100BASE-T ports in Figure 1 are grouped in pairs. The first member of the pair (port 1) is above the second member (port 2) on the left. Port 3 is above port 4, and so on. The dual-purpose ports are numbered 1 and 2.

Figure 1 Cisco CGS-2520-24TC Cable-Side View

1

SD1 flash memory card slot

6

RJ-45 console port

2

LEDs

7

USB (mini-Type B) console port

3

Express Setup button

8

Power-input terminal

4

10/100BASE-T ports

9

Alarm port

5

Dual purpose ports

The100 Mb/s SFP ports and the 10/100BASE-T PoE+ ports are grouped in pairs. The first member of the pair (port 1) is above the second member (port 2) on the left. Port 3 is above port 4, and so on. The dual-purpose ports are numbered 1 and 2.

Figure 2 Cisco CGS-2520-16S-8PC Cable-Side View

1

SD flash memory card slot

6

Dual purpose ports

2

LEDs

7

RJ-45 console port

3

Express Setup button

8

USB (mini-Type B) console port

4

100 Mb/s SFP ports

9

Power-input terminal

5

10/100BASE-T PoE+ ports

10

Alarm port

Ports

■10/100BASE-T Ports

■PoE and PoE+ Ports

■Dual-Purpose Gigabit Ethernet Ports

■Power-Input Terminal

■Alarm Ports

■Management Ports

10/100BASE-T Ports

You can set the 10/100BASE-T ports on the switch to operate in any combination of half duplex, full duplex, or 10 or 100 Mb/s. You can set the ports for speed and duplex auto-negotiation. The default setting is auto-negotiate.

When set for auto-negotiation, the switch determines the speed and duplex settings of the attached device, and advertises its own capabilities. If the connected device also supports auto-negotiation, the switch negotiates the best connection (the fastest line speed that both devices support and full-duplex transmission if the attached device supports it), and configures itself accordingly. In all cases, the attached device must be within 328 feet (100 meters).

The 10/100BASE-T ports use RJ-45 connectors with Ethernet pinouts. The maximum cable length is 328 feet (100 meters). The 100BASE-T traffic requires Category 5, Category 5e, or Category 6 unshielded twisted pair (UTP) cable. The 10BASE-T traffic can use Category 3 or Category 4 UTP cable.

PoE and PoE+ Ports

Warning: Voltages that present a shock hazard may exist on Power over Ethernet (PoE) circuits if interconnections are made using uninsulated exposed metal contacts, conductors, or terminals. Avoid using such interconnection methods, unless the exposed metal parts are located within a restricted access location and users and service people who are authorized within the restricted access location are made aware of the hazard. A restricted access area can be accessed only through the use of a special tool, lock and key or other means of security. Statement 1072

The 10/100BASE-T PoE+ ports on the Cisco CGS-2520-16S-8PC and Cisco CGS-2520-16S-8PC-C models provide:

■Support for IEEE 802.3af-compliant powered devices (up to 15.4 W PoE per port) and support for IEEE 802.3at-compliant powered devices (up to 30 W PoE+ per port).

■Support for prestandard Cisco powered devices.

■Configurable support for Cisco intelligent power management, including:

–enhanced power negotiation

–power reservation

–per-port power policing

Each power supply module can support an equivalent PoE load of two PoE+ ports or four PoE ports. When both power supply modules are installed, the system has enough power to support four PoE+ ports, or eight PoE ports.

If ports are designated as high priority and low priority PoE or PoE+ ports at the command line interface (CLI), and one power supply module fails or is removed, power to the high priority ports is maintained, and power to the low priority ports is dropped. When assigning priority to PoE or PoE+ ports, it is important to assign priorities on the basis of power supply capacity.

For information about configuring and monitoring PoE ports, see the CGS 2520 Switch Software Configuration Guide on Cisco.com.

For information about port connections and port specifications, see Connecting Devices to the Ethernet Ports and the Connector and Cable Specifications.

Note: The output of the PoE+ circuit has been evaluated as a Limited Power Source (LPS) per IEC 60950-1.

Dual-Purpose Gigabit Ethernet Ports

You can configure the dual-purpose ports on the switch as either 10/100/1000 ports or as SFP module ports. You can set the 10/100/1000 ports to autonegotiate, or you can configure them as fixed 10, 100, or 1000 Mb/s (Gigabit) Ethernet ports.

By default, the switch selects the medium for each dual-purpose port (10/100/1000BASE-T or SFP). When a link is achieved on one media type, the switch disables the other media type until the active link goes down. If links are active on both media, the SFP module port has priority, but you can use the media-type interface configuration command to manually designate the port as an RJ-45 port or an SFP port.

You can configure the speed and duplex settings consistent with the selected media type. For information on configuring interfaces, see the CGS 2520 Switch Software Configuration Guide on Cisco.com.

For more information on the SFP module ports see:

■SFP Modules

■SFP Module Patch Cable

SFP Modules

The switch Ethernet SFP modules provide connections to other devices. These field-replaceable transceiver modules provide the uplink interfaces. Local connectors (LCs) provide the fiber-optic connection. RJ-45 connectors allow copper connections. You can use any combination of the supported SFP modules listed in Table 2.

Table 2 Maximum Operating Temperature

Type of SFP Module

Model

Rugged and Industrial SFPs

–40 to 140°F (–40 to 60°C)

■GLC-SX-MM-RGD

■GLC-LX-SM-RGD

■GLC-FE-100LX-RGD

■GLC-FE-100FX-RGD

■GLC-FE-T-I

■GLC-ZX-SM-RGD

Commercial SFPs

32 to 113°F (0 to 45°C)

■GLC-BX-D with digital optical monitoring (DOM) support

■GLC-BX-U with DOM support

■GLC-FE-100LX

■GLC-FE-100BX-D

■GLC-FE-100BX-U

■GLC-FE-100FX

■GLC-FE-100EX

■GLC-FE-100ZX

■GLC-T

■CWDM SFP with DOM support

Extended temperature SFPs

23 to 140°F (–5 to 60°C)

■SFP-GE-L with DOM support

■SFP-GE-S with DOM support

■SFP-GE-T

■SFP-GE-Z with DOM support

■GLC-EX-SMD with DOM support

■GLC-TE

For minimum software requirements, refer to the Release Notes for your platform.

For the most up-to-date list of supported SFP models for Cisco Industrial Ethernet switches, see http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_6981.html#wp138176

For information about SFP modules, see your SFP module documentation and the Installing and Removing SFP Modules. For cable specifications, see SFP Module Cables.

SFP Module Patch Cable

The switch uses an SFP module patch cable, a 0.5-meter, copper, passive cable with SFP module connectors at each end (see Figure 3). The patch cable connects two switches in a cascaded configuration.

Figure 3 SFP Module Patch Cable

For information about using the SFP module patch cable, see Inserting and Removing the SFP Module Patch Cable. You can order this cable (part number CAB-SFP-50CM=).

Power-Input Terminal

The power-input terminal provides screw terminals for the AC and DC power connections. The switch can operate with one or two power supplies. If one of the power sources fail, the other continues to power the switch. For more information, see Power Supply Installation.

Figure 4 Power-Input Terminal

Alarm Ports

The switch has four alarm inputs and one alarm output. The alarm setting is open or closed.

■Open means that the normal condition has current flowing through the contact (referred to as a normally closed contact). The alarm is generated when the current stops.

■Closed means that no current flows through the contact (referred to as a normally open contact). The alarm is generated when the current flows.

This section contains the following alarm port information:

■Alarm Input

■Alarm Output

Alarm Input

The alarm input is a dry-contact alarm port. You can connect up to four alarm inputs from devices, such as a door, a temperature gauge, or a fire alarm, to the alarm port. You can use the CLI to set the alarm severity to minor, major, or critical. An alarm generates a system message and turns on an LED. See Alarm LEDs for the LED descriptions.

Alarm Output

The alarm output can be configured as a minor or major alarm. Output alarms often control an external alarm, such as a bell or a light. To connect an external alarm device to the relay, connect two relay contact wires to complete the electrical circuit. See Alarm Ports for information on the alarm pinouts.

Management Ports

You can connect the switch to a PC running Microsoft Windows or to a terminal server through either the RJ-45 console port or the USB console port.

■RJ-45 console port. The RJ-45 connection uses an RJ-45-to-DB-9 female cable

■USB mini-Type B console port (5-pin connector); the USB connection uses a USB Type A-to-5-pin mini-Type B cable

The USB console interface speeds are the same as the RJ-45 console interface speeds.

To use the USB console port, you must install the Cisco Windows USB device driver on the device that is connected to the USB console port (device running with Microsoft Windows).

Note: For information about downloading the Cisco USB device driver, see Installing the Cisco Microsoft Windows USB Device Drivers.

With the Cisco Windows USB device driver, connecting and disconnecting the USB cable from the console port does not affect Windows HyperTerminal operations. Mac OS X or Linux require no special drivers.

Note: The 5-pin mini-Type B connectors resemble the 4-pin mini-Type B connectors. They are not compatible. Use only the 5-pin mini-Type B. See Figure 5.

Figure 5 USB Mini-Type B Port

The configurable inactivity timeout reactivates the RJ-45 console port if the USB console port is activated, but no input activity occurs on it for a specified time period. When the USB console port deactivates due to a timeout, you can restore its operation by disconnecting and reconnecting the USB cable. For information on using the CLI to configure the USB console interface, see the switch software guide.

LEDs

You can use the switch system and port LEDs to monitor switch activity and performance.

The information in this section includes:

■Switch Panel LEDs

■System LED

■Power Supply Module LEDs

■Alarm LEDs

■Console LEDs

■Port LEDs

■Dual-Purpose Port LEDs

■SD Flash Memory Card LED

Switch Panel LEDs

Figure 6 Switch LEDs (Cable Side)

1

SYS (system)

9

OUT (alarm output)

2

CON (console)

10

PSU1 (power supply 1)

3

USB

11

PSU2 (power supply 2)

4

SD (SD flash memory card)

12

PoE2

5

IN1 (alarm input 1)

13

Express Setup button

6

IN2 (alarm input 2)

14

Ethernet ports

7

IN3 (alarm input 3)

15

SFP module port

8

IN4 (alarm input 4)

16

10/100/1000 port

System LED

Table 3 System LED

Color

System Status

Off

System is not powered on

Blinking green

POST3 is in progress

Green

System is operating normally

Amber

System is receiving power but is not functioning properly

3.POST = power-on self-test.

Power Supply Module LEDs

The switch power supply module LEDs are labeled PSU1 and PSU2 (on the switch) and PSU OK (on the power supply module). They show whether power supply modules 1 and 2 are receiving power. See Figure 6 and Figure 9.

Table 4 Power Supply Module LEDs

Color

System Status

Off

Power supply module (1 or 2) is not installed

Green

Valid input is present, and the output is within the operating range

Red

Valid input is present, and the output is outside the operating range or is not present

Blinking red

Valid input is not present

Alarm LEDs

Table 5 Alarm Input LEDs

Color

System Status

Off

No alarm

Amber

Minor alarm

Red

Major alarm

Blinking red

Critical alarm

Table 6 Alarm Output LED

Color

System Status

Green

No alarm

Red

Relay closed, alarm present

Console LEDs

The console LEDs show which console port is in use. See Figure 6 and Figure 9 for the LED locations.

If you connect a cable to a console port, the switch automatically uses that port for console communication. If you connect two console cables, the USB console port has priority.

Table 7 RJ-45 and USB Console Port LEDs

LED

Color

Description

RJ-45 console port

Green

RJ-45 console port is active.; USB console port LED is off

Off

Port is not active; USB console port is active

USB console port

Green

USB console port is active; RJ-45 console port LED is off

Off

Port is not active; RJ-45 console port is active

Port LEDs

RJ-45 ports and SFP module slots have port LEDs. Port LEDs, as a group or individually, provide information about the switch and about the individual ports.

Table 8 Meaning of Port LED Colors

LED Color

Meaning

Off

No link or port was administratively shut down

Green

Link present but not sending or receiving data

Blinking green

Activity. Port is sending or receiving data

Alternating green-amber

Link fault. Error frames can affect connectivity, and errors such as excessive collisions, CRC errors, and alignment and jabber errors are monitored for link faults

Amber

Port is blocked by Spanning Tree Protocol (STP) and is not forwarding data. After a port is reconfigured, the port LED is amber for up to 30 seconds as STP searches for loops.

PoE LED

Table 9 PoE LED

Color

Meaning

Off

PoE/PoE+ not enabled

Green

PoE/PoE+ enabled and ports are functioning correctly

Alternating green and amber

PoE/PoE+ enabled but power is disconnected or has failed on a low-priority port

Blinking amber

PoE/PoE+ enabled but power is disconnected or has failed on a high-priority port

Amber

PoE/PoE+ enabled and a PoE/PoE+ circuit failure is detected

Dual-Purpose Port LEDs

The dual-purpose port LEDs identify the connection as either a copper-based connector or an SFP module. The ports can autonegotiate, or you can manually configure each dual-purpose port as either 10/100/1000 with copper connectors or as an SFP module port, but not as both types at the same time. See Table 8 for LED descriptions.

SD Flash Memory Card LED

Table 10 SD Flash Memory Card LED

Color

System Status

Off / blinking green

Transfer in progress

Blinking amber

Not present (slow blinking); unsupported SD flash memory card is detected (fast blinking)

Amber

Error accessing the SD flash memory card; Cisco IOS boot image cannot be found

Green

SD flash memory card is functioning

SD Flash Memory Card

The switch ships with the Secure Digital (SD) flash memory card installed. See Figure 1 and Figure 2. You can remove the card from a failed switch and install it in a replacement switch. You do not have to reconfigure the new switch. See Replacing the SD Flash Memory Card for information.

Warning: Be aware that the SD card contains sensitive and security relevant information, including but not limited to full device configuration information, public and private keys used for SSH and SSL (if those protocols are enabled), device passwords and others. Access to SD cards for any Cisco CGS switch should be limited to authorized personnel.

Power Supply Side

The power supply side has the LED panel and two power supply slots for the removable power supplies. See Figure 7 and Figure 8.

This section has information about:

■Power Supply Module LEDs

■Power Supply Features

Figure 7 Switch with One Power Supply Module

1

LED panel

2

Power supply slot 1

3

Power supply slot 2

Figure 8 Switch with Both Power Supply Modules

1

PSU OK LED

For a description of the PSU OK LED, see Table 4.

Power Supply-Side LEDs

Figure 9 Switch LEDs

1

SYS (system)

9

OUT (alarm output)

2

CON (console)

10

PSU1 (power supply 1)

3

USB LED

11

PSU2 (power supply 2)

4

SD (SD flash memory card)

12

PoE4

5

IN1 (alarm input 1)

13

Express setup button

6

IN2 (alarm input 2)

14

Ethernet port

7

IN3 (alarm input 3)

15

10/100/1000 port

8

IN4 (alarm input 4)

16

SFP port

Power Supply Features

The switch has two slots for power supply modules:

■PWR-RGD-LOW-DC: low-voltage DC (for voltage information, see Table 19)

■PWR-RGD-AC-DC: high-voltage AC or DC (for voltage information, see Table 18)

■PWR-RGD-AC-DC-C: high-voltage AC or DC for China

The switch supports these power supply module combinations:

■Single low-voltage DC

■Single high-voltage AC or DC

■Two high-voltage AC or DC

■Two low-voltage DC

■One high-voltage AC or DC and one low-voltage DC

For information on installing the power supply modules, see Power Supply Installation

See Table 4 for information on the power supply LEDs.

Management Options

■Device manager

You can use the device manager in the switch memory to manage standalone switches. For information, see the switch getting started guide and the device manager online help.

■Cisco IOS CLI

You can configure and monitor the switch from the CLI. Connect your management station to the switch console port or use Telnet from a remote management station. See the switch command reference on Cisco.com for information.

■CiscoWorks application

The CiscoWorks LAN Management Solution (LMS) is a suite of management tools that simplify the configuration, administration, monitoring, and troubleshooting of Cisco networks. See the LMS documentation for information: http://www.cisco.com/en/US/products/ps7198/tsd_products_support_series_home.html

■CiscoView application

The CiscoView device-management application displays a switch image that you can use to view switch status and performance information and to set configuration parameters. The CiscoView application (sold separately) can be a standalone application or part of a Simple Network Management Protocol (SNMP) platform. For information, see the CiscoView documentation: http://www.cisco.com/en/US/products/sw/cscowork/ps4565/tsd_products_support_series_home.html

■Cisco Configuration Engine

The Cisco Configuration Engine automates initial configurations and configuration updates. It generates device-specific configuration changes, sends them to the device, executes the configuration changes, and logs the results. For information about Cisco Configuration Engine, see the software configuration guide on Cisco.com.

■SNMP network management

You can manage switches from a Simple Network Management Protocol (SNMP)-compatible management station that is running platforms such as HP OpenView or SunNet Manager. The switch supports a comprehensive set of Management Information Base (MIB) extensions and four Remote Monitoring (RMON) groups. See the switch software configuration guide on Cisco.com and the documentation that came with your SNMP application for information.

■Cisco Configuration Professional

Configuration Professional is a software program that you download from Cisco.com and run on your PC. It offers advanced options for configuring and monitoring multiple devices, including the Cisco CGS 2520 switches. Configuration Professional is available at no cost:

http://www.cisco.com/en/US/products/ps9422/index.html

See the Configuration Professional getting started guide and online help for more information.

■Cisco Security Manager

Cisco Security Manager (Security Manager) manages security policies on Cisco security devices. It supports integrated provisioning of firewall, IPS, and VPN (site-to-site, remote access, and SSL) services across devices. For information, see the User Guide for Cisco Security Manager 3.2.2 .

■Catalyst Smart Operations

The Smart Install feature provides a single point of management (director) in a network. You can use it to provide a zero touch image and configuration upgrade of newly deployed switches and image and configuration downloads for any client switches. For information, see the Cisco Smart Install Configuration Guide on Cisco.com.

The Smartports feature provides user-defined and Cisco-default macros for creating custom switch configurations to simplify deployment. For information about configuring Smartports, see the switch software configuration guide on Cisco.com.

Network Configurations

See the CGS 2520 Switch Software Configuration Guide on Cisco.com for an explanation of network configuration concepts. The software configuration guide also provides network configuration examples for creating dedicated network segments that are interconnected through Ethernet connections.

Switch Installation

This section contains the steps to install the switch. Please read the topics and follow the steps in the following order:

■Warnings

■Installation Guidelines

■Verifying Switch Operation

■Installing the Switch

■Installing and Removing SFP Modules

■Inserting and Removing the SFP Module Patch Cable

■Replacing the SD Flash Memory Card

■Connecting Devices to the Ethernet Ports

■Where to Go Next

Warnings

These warnings are translated into several languages in the Regulatory Compliance and Safety Information for the Cisco CGS 2520 document that ships on the documentation CD.

These warning statements apply to all the switches:

Warning: Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. Statement 43

Warning: Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001

Warning: Read the installation instructions before you connect the system to its power source. Statement 1004

Warning: This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security. Statement 1017

Warning: This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. Statement 1024

Warning: This unit might have more than one power supply connection. All connections must be removed to de-energize the unit. Statement 1028

Warning: Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030

Warning: Ultimate disposal of this product should be handled according to all national laws and regulations. Statement 1040

Warning: For connections outside the building where the equipment is installed, the following ports must be connected through an approved network termination unit with integral circuit protection.

10/100/1000 Ethernet Statement 1044

Warning: To prevent the system from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of:

140°F (60°C) Statement 1047

Warning: This equipment is supplied as “open type” equipment. It must be mounted within an enclosure that is suitably designed for those specific environmental conditions that will be present and appropriately designed to prevent personal injury resulting from accessibility to live parts. The interior of the enclosure must be accessible only by the use of a tool. The enclosure must meet IP 54 or NEMA type 4 minimum enclosure rating standards. Statement 1063

Warning: Installation of the equipment must comply with local and national electrical codes. Statement 1074

Note: For U.S. installations, refer to national electrical code ANSI/NFPA 70.

Warning: To prevent airflow restriction, allow clearance around the ventilation openings to be at least:

1.75 in. (4.4 cm). Statement 1076

Installation Guidelines

Before installing the switch, verify that these guidelines are met:

■Cabling must be kept away from sources of electrical noise, such as radios, power lines, and fluorescent lighting fixtures. Make sure that the cabling is away from other devices that might damage the cables.

■Operating environment is within the temperature ranges listed in the Switch Specifications.

■Relative humidity around the switch does not exceed 95 percent (noncondensing).

■Altitude at the installation site is not higher than 10,000 feet.

■For 10/100 and 10/100/1000 fixed ports, cable lengths from the switch to connected devices are not more than 328 feet (100 meters).

■For cable lengths for small-form-factor pluggable (SFP)-module connections, see SFP Module Cables and the module documentation.

■Airflow around the switch and through the vents is unrestricted. To prevent overheating, the switch must meet the minimum clearance of 1.75 inches (4.4 cm) at the top and bottom. For clearances needed for wall mounting, see specifications in Wall-Mounting.

Note: If the switch is installed in a closed or multi-rack assembly, take into consideration that the temperature around the switch might be greater than normal room temperature and that special accommodations in clearance must be made.

Verifying Switch Operation

Before installing the switch in a rack or on a wall, you should power on the switch and verify that the switch passes the power-on self-test (POST).

To wire the switch to the power source, see Power Supply Module Installation.

When the switch begins POST, the System LED blinks green, and the other LEDs stay green. When the switch passes POST, the System LED turns green. The other LEDs turn off and return to their operating status. If the switch fails POST, the System LED is amber.

Note: Contact Cisco Systems immediately if your switch fails POST.

After a successful POST, disconnect the power from the switch.

Installing the Switch

The following installation information is covered in this section:

■Mounting into a Rack

■Wall-Mounting

Note: After the switch is mounted onto the rack, connect the power source to the switch. For more information, see Power Supply Installation chapter.

Mounting into a Rack

The following mounting procedures are explained in this section:

■Mounting Brackets

■Attaching Brackets for 19-Inch Racks

■Attaching Brackets for 19-Inch Racks (IP-30 Compliance)

■Attaching Brackets for 23-Inch Racks

■Attaching Brackets for ETSI Racks

■Mounting the Switch into a Rack

Warning: To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety:

• This unit should be mounted at the bottom of the rack if it the only rack in the rack

• When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack

• If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack. Statement 1008

Mounting Brackets

Figure 10 shows the 19-inch rack mounting brackets.

Figure 10 19-inch Mounting Brackets

Figure 11 shows the 23-inch rack mounting brackets.

Figure 11 23-inch Mounting Brackets

Figure 12 shows the ETSI rack mounting brackets.

Figure 12 ETSI Mounting Brackets

Attaching Brackets for 19-Inch Racks

Figure 13 and Figure 14 shows the 19-inch rack mounting bracket locations on the switch for cable-side mounting and power-side mounting onto an 19-inch rack.

Figure 13 Attaching Brackets for 19-Inch Racks

1

Mid-mount position

3

Cable-side mounting position

2

Phillips flat-head screws

4

Power supply-side mounting position

Figure 14 Attaching Brackets for 19-Inch Racks

1

Phillips flat-head screws

3

Power supply-side mounting position

2

Cable-side-mounting position

Attaching Brackets for 19-Inch Racks (IP-30 Compliance)

Before installing the mounting brackets, you need to install the rubber plugs into the unused mounting holes of the switch chassis. You can get the appropriate rubber plugs by ordering kit CGS-2520-IP30KIT.

Follow the procedure below to install the rubber plugs.

1. Determine whether you will install using the mid-mount, cable-side, or power supply-side positioning by identifying your bracket mounting positions shown in Figure 18 and Figure 19.

2. Insert the rubber plugs into the appropriate holes according to your mount position as shown in Figure 15 and Figure 16.

Do the same on both sides of the switch.

Figure 15 Inserting the Rubber Plugs

1

Rubber plug

3

Cable-side mounting position

2

Mid-mount position

4

Power supply-side mounting position

Figure 16 Inserting the Rubber Plugs

1

Rubber plug

3

Power supply-side mounting position

2

Cable-side mounting position

3. Use a screwdriver or pen to completely push in the rubber plugs.

Figure 17 shows a close-up of the rubber plug and how they are inserted into the mounting holes.

Figure 17 Inserting the Rubber Plugs (detail)

1

Rubber plug

3

Screwdriver

2

Switch

4. Install the brackets on both sides of the switch as shown in Figure 18 and Figure 19.

Figure 18 Attaching Brackets for 19-Inch Racks

1

Mid-mount position

3

Cable-side mounting position

2

Phillips flat-head screws

4

Power supply-side mounting position

Figure 19 Attaching Brackets for 19-Inch Racks

1

Phillips flat-head screws

3

Power supply-side mounting position

2

Cable-side-mounting position

Note: For IP-30 compliance: If you use 23-inch brackets or ETSI brackets, you can insert the rubber plugs in the same holes as shown in Figure 15 and Figure 16 before installing the brackets.

Attaching Brackets for 23-Inch Racks

Figure 20 shows the 23-inch rack mounting bracket locations on the switch for cable-side mounting and power-side mounting onto a 23-inch rack.

Figure 20 Attaching Brackets for 23-Inch Racks

1

Phillips flat-head screws

3

Power supply-side mounting position

2

Cable-side-mounting position

Note: For IP-30 compliance: If you use 23-inch brackets, you can insert the rubber plugs in the same holes as shown in Figure 16 or Figure 17 before installing the brackets.

Attaching Brackets for ETSI Racks

Figure 21 shows the mounting bracket locations on the switch for cable-side mounting and power-side mounting onto an ETSI rack.

Figure 21 Attaching Brackets for ETSI Racks

1

Phillips flat-head screws

3

Power supply-side mounting position

2

Cable-side mounting position

Note: For IP-30 compliance: If you use ETSI brackets, you can insert the rubber plugs in the same holes as shown in Figure 16 or Figure 17 before installing the brackets.

Mounting the Switch into a Rack

After you attach the brackets onto the switch, use the four supplied number-12 Phillips machine screws to attach the brackets to the rack as shown in Figure 22. (Brackets for the 19-inch rack shown in this example.)

Note: We recommend attaching the cable guide to prevent the cables from obscuring the LED panels on the devices in the rack. Use the supplied black screw shown in Figure 22 [6] to attach the cable guide to the left or right bracket.

Figure 22 Rack Mounting

1

Mid-mount position

4

Phillips machine screws

2

Cable screw

5

Power supply-side mounting position

3

Cable-side mounting position

6

Cable guide

Wall-Mounting

The following steps are covered in this section:

■Attaching Brackets for Wall Mounting

■Wall-Mounting (for IP-30 Compliance)

Warning: If the switch is wall-mounted in an enclosure allow for these minimum clearances:

■ Sides of switch (facing up and facing down): 3.75 in. (9.52 cm)

■ Port side 3.0 in. (7.62 cm)

■ Power supply side: 5.25 in. (13.33 cm)

■ Cover side (side not facing wall): 1.75 in. (4.44 cm)

■ Base side (facing wall): 0 in. (0 cm)

Attaching Brackets for Wall Mounting

To mount the switch onto a wall:

1. Insert the rubber plugs into the appropriate holes.

Do the same on the other side of the switch.

2. Use a screwdriver or pen to completely push in the rubber plugs (see Figure 17).

3. Install the brackets onto both sides of the switch (see Figure 25).

4. Secure the bracket and switch to the wall using the screws provided.

Figure 23 shows how to wall-mount the switch onto a wall.

Figure 23 Attaching 19-inch Rack Brackets for Wall Mounting

1

Phillips truss-head screws

Wall-Mounting (for IP-30 Compliance)

To mount the switch onto a wall and conform to IP-30 Compliance regulations:

1. Insert the rubber plugs into the appropriate holes (see Figure 24) on both sides of the switch.

2. Use a screwdriver or pen to completely push in the rubber plugs (see Figure 17).

Figure 24 Inserting the Rubber Plugs into the Switch Holes

1

Rubber plug

3. Install the brackets on both sides of the switch (see Figure 25).

Figure 25 Attaching 19-inch Rack Brackets

1

Phillips truss-head screws

Installing and Removing SFP Modules

These sections describe how to install and remove SFP modules. SFP modules are inserted into SFP module slots on the front of the switch. Field-replaceable SFP modules provide the uplink interfaces, send (TX) and receive (RX).

You can use any combination of rugged SFP modules. See Table 1 for a list of supported modules. Each SFP module must be of the same type as the SFP module on the other end of the cable, and the cable must not exceed the stipulated cable length for reliable communications. See SFP Module Cables for cable stipulations for SFP module connections.

Caution: When you use commercial SFP modules such as CWDM and 1000BX-U/D, reduce the maximum operating temperature by 59°F (15°C). The minimum operating temperature is 32°F (0°C).

Caution: To prevent electrostatic-discharge (ESD) damage, follow standard board and component handling procedures.

Warning: Do not insert and remove SFP modules while power is on; an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding. Statement 1087

Figure 26 shows an LC SFP module with a bale-clasp latch.

Caution: Do not install or remove the LC SFP module with fiber-optic cables attached because of potential damage to the cables, the cable connector, or the optical interfaces in the SFP module. Disconnect all cables before removing or installing an SFP module. Removing and installing an SFP module can shorten its useful life. Do not remove and insert SFP modules more often than is absolutely necessary.

Figure 26 LC SFP Module with Open Bale-Clasp Latch

Figure 27 Installing an SFP Module

Installing LC SFP Modules

To install fiber-optic SFP modules:

1. Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface.

2. Find the send (TX) and receive (RX) markings on the module top.

Note: On some SFP modules, the send and receive (TX and RX) markings might be replaced by arrows that show the direction (send or receive) of the connection.

3. If the module has a bale-clasp latch, move it to the open, unlocked position.

4. Align the module in front of the slot opening, and insert until you feel the connector snap into place.

5. If the module has a bale-clasp latch, close it to lock it into place.

6. For fiber-optic SFP modules, remove the dust plugs and store them in a clean location for reuse.

Caution: Do not remove the dust plugs from the SFP module port or the rubber caps from the fiber-optic cable until you are ready to connect the cable. The plugs and caps protect the SFP module ports and cables from contamination and ambient light.

7. Connect the SFP cables.

Installing 1000BASE-T SFP Modules

The 1000BASE-T (copper) SFP transceiver, see Figure 28, has a bale-clasp locking mechanism that secures the transceiver in the module socket. An RJ-45 connector provides the transceiver's interface point to the network.

Figure 28 1000BASE-T SFP Transceiver

1

RJ-45 connector

3

Bale-clasp latch open (unlocked)

2

Bale-clasp latch mechanism closed

Caution: To comply with GR-1089 intrabuilding lightning immunity requirements, you must use grounded, shielded, twisted-pair, CAT5 cabling.

Note: When connecting to a 1000BASE-T-compatible server, workstation, or router, use four twisted-pair, straight-through CAT5 cabling for the SFP transceiver port. When connecting to a 1000BASE-T-compatible switch or repeater, use four twisted-pair, crossover CAT5 cabling.

To install a 1000BASE-T SFP transceiver:

1. Attach an ESD-preventive wrist strap to your wrist and to the ESD ground connector on the chassis or to a properly grounded bare metal surface.

Caution: To avoid ESD damage, handle the SFP by its sides; do not touch the connector pins.

2. Remove the new 1000BASE-T SFP module from its protective packaging.

3. Check the markings on the SFP transceiver to verify that you have the correct model for your network.

4. Position the SFP transceiver in front of the port socket opening.

Note: Different Cisco devices have different SFP transceiver socket configurations. Your Cisco device might require that the SFP transceiver be installed with the bale-clasp either in a latch-up or a latch-down orientation. Verify that the SFP transceiver is oriented correctly when you position it in front of the port socket.

5. With the bale-clasp closed (locked), slide the SFP transceiver into the socket until you feel it snap in place in the socket. You may hear an audible click as the SFP transceiver latch engages in the socket ().

6. Connect the network interface cable RJ-45 plug to the SFP RJ-45 connector.

7. Observe the port status LED:

–Green indicates that the SFP transceiver and the target device established a link.

–Amber indicates that the port is discovering the network topology and searching for loops. This process takes about 30 seconds, and then the LED turns green.

–Off indicates that the target device might not be turned on, there might be a cable problem, or there might be a problem with the adapter installed in the target device. Refer to Troubleshooting for solutions to cabling problems.

Removing SFP Modules

This section describes how to replace small-form-factor pluggable (SFP) modules. SFP modules are inserted into the SFP modules connected to the switch.

1. Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface.

2. Disconnect the cables from the SFP module ports.

Note which cable connector plug is send (TX) and which is receive (RX).

Note: On some SFP modules, the send and receive (TX and RX) markings might be replaced by arrows that show the direction (in or out) of the connection.

Caution: Do not remove cables from the fiber-optic SFP module ports until you are ready to insert the dust plugs.

3. Insert a dust plug into the optical ports of the SFP module.

4. If the module has a bale-clasp latch, pull the bale out and down to eject it.

If the latch is obstructed and you cannot use your finger, use a small, flat-blade screwdriver or other long, narrow instrument.

Figure 29 Removing a Bale Clasp Latch SFP Module

5. Grasp the SFP module, and carefully remove it from the slot.

6. Place the module in an anti-static bag or other protective environment.

Inserting and Removing the SFP Module Patch Cable

1. Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface.

2. Insert the SFP module patch cable into the slot until you feel the connector on the cable snap into place at the rear of the slot (see Figure 30).

Figure 30 Inserting an SFP Module Patch Cable

3. Repeat these steps for the second switch that you want to connect to the first switch.

Figure 31 Connecting Two Switches with an SFP Module Patch Cable

Removing the SFP Module Patch Cable

To remove an SFP module patch cable from the SFP module slot, release the connector, and pull it from the slot.

Replacing the SD Flash Memory Card

Warning: Be aware that the SD card contains sensitive and security relevant information, including but not limited to full device configuration information, public and private keys used for SSH and SSL (if those protocols are enabled), device passwords and others. Access to SD cards for any Cisco CGS switch should be limited to authorized personnel.

1. Locate the Secure Digital (SD) flash memory card slot on the cable-side of the switch.

2. Use a number 1 Phillips screwdriver to loosen the captive screw (see Figure 32).

Figure 32 Loosening the Captive Screw

3. Pull the cover open, and pull the cover tabs from the hinge (see Figure 33).

Figure 33 Removing the SD Slot Cover

4. Gently push the SD flash memory card to eject it (see Figure 34). Place it in an antistatic bag to protect it from static discharge.

Figure 34 Removing the SD Flash Memory Card

5. Push the replacement card (upside down) into the slot, and press it firmly in place.

The card is keyed so that you cannot insert it the wrong way.

6. Begin replacing the cover by placing the SD slot cover tabs into the hinge.

7. Close the cover, and use a ratcheting torque number 1 Phillips screwdriver to torque the screw to 4.5 in-lb.

Table 11 Ethernet Cables (Auto-MDIX Disabled)

Device

Crossover Cable 1

Straight-Through Cable1

Switch to switch

Yes

No

Switch to hub

Yes

No

Switch to computer or server

No

Yes

Switch to router

No

Yes

Switch to IP phone

No

Yes

1.100BASE-TX and 1000BASE-T traffic requires twisted four-pair, Category 5, Category 5e, or Category 6 cable. 10BASE-T traffic uses Category 3 or Category 4 cable.

Connecting Devices to the Ethernet Ports

This section covers the following procedures:

■Connecting to the 10/100 and 10/100/1000 Ports

■Connecting to the 10/100 PoE+ Ports

Connecting to the 10/100 and 10/100/1000 Ports

The 10/100 and 10/100/1000 Ethernet ports use standard RJ-45 connectors with Ethernet pinouts. The maximum cable length is 328 feet (100 meters). The 100BASE-TX and 1000BASE-T traffic requires CAT5, CAT5e, or CAT6 UTP cable. The 10BASE-T traffic uses Category 3 or Category 4 cable.

The auto-negotiation feature is enabled by default on the switch. At this setting, the switch ports configure themselves to operate at the speed of the attached device. If the device does not support auto-negotiation, you can set the switch port speed and duplex parameters. To maximize performance, either let the ports autonegotiate both speed and duplex, or set the port speed and duplex parameters on both ends of the connection.

For simplified cabling, the automatic medium-dependent interface crossover (auto-MDIX) feature is enabled by default. With auto-MDIX enabled, the switch detects the required cable type for copper Ethernet connections and configures the interface accordingly. Therefore, you can use either a crossover or a straight-through cable for connections to a 10/100/1000 Ethernet port, regardless of the type of connected device.

See switch software configuration guide or the switch command reference on Cisco.com for more information about auto-negotiation and auto-MDIX.

If auto-MDIX is disabled, use the guidelines in Table 11 to select the cable for connecting the 10/100/1000 Ethernet ports to other devices.

See Connector and Cable Specifications for cable-pinout descriptions.

Figure 35 Connecting to an Ethernet Port

Connecting to the 10/100 PoE+ Ports

The Cisco CGS-2520-16S-8PC switch (and the CGS-2520-16S-8PC-C switch) 10/100 PoE+ ports have the same auto-negotiation settings and cabling requirements as those in Connecting to the 10/100 and 10/100/1000 Ports. These ports provide PoE power.

See PoE and PoE+ Ports for information on the cables and connectors.

The ports provide PoE support for devices compliant with IEEE 802.3af and also provide Cisco prestandard PoE support for Cisco IP Phones and Cisco Aironet Access Points.

On a per-port basis, you can control whether or not a port automatically provides power to a connected IP phone or an access point.

To access an advanced PoE+ planning tool, use the Cisco Power Calculator on Cisco.com:

http://tools.cisco.com/cpc/launch.jsp

You can use this application to calculate the power supply requirements for a specific PoE configuration. The results show output current, output power, and heat dissipation.

Warning: Voltages that present a shock hazard may exist on Power over Ethernet (PoE) circuits if interconnections are made using uninsulated exposed metal contacts, conductors, or terminals. Avoid using such interconnection methods, unless the exposed metal parts are located within a restricted access location and users and service people who are authorized within the restricted access location are made aware of the hazard. A restricted access area can be accessed only through the use of a special tool, lock and key or other means of security. Statement 1072

Caution: CAT5e and CAT6 cables can store high levels of static electricity. Always ground the cables to a suitable and safe earth ground before connecting them to the switch or other devices.

Where to Go Next

After the switch is mounted onto the rack, do the following:

■Wire the switch to a power source (see Power Supply Installation).

■For configuration instructions about the CLI setup program, see Configuring the Switch with the CLI Setup Program.

■You can use the default configuration installed on the switch or use any of the management options described in the Management Options to change the switch settings.

Power Supply Installation

This section describes how to remove and install a new or replacement power supply. Your switch ships with at least one installed power supply module (AC or DC, depending on your order). The power supply modules are field-replaceable units (FRUs) and are hot-swappable.

For translations of the safety warnings in this chapter, see the Regulatory Compliance and Safety Information for the Cisco CGS 2520 on the documentation CD and also on Cisco.com.

■Power Supply Modules

■Installation Guidelines

■Grounding the Switch

■Installing the Power Supply Module in the Switch

■Wiring the Power Source

■Removing the Power Supply Module

Power Supply Modules

For information on the power supply modules, see Power Supply Features.

Model

Description

PWR-RGD-LOW-DC

Low-voltage DC. For voltage information, see Table 19.

PWR-RGD-AC-DC

High-voltage AC or DC. For voltage information, see Table 18.

PWR-RGD-AC-DC-C

(For China) High-voltage AC or DC. For voltage information, see Table 18.

Note: Each power supply module can support an equivalent PoE load of two PoE+ ports or four PoE ports. When both power supply modules are installed, the system has enough power to support four PoE+ ports, or eight PoE ports. If ports are designated as high priority and low priority PoE or PoE+ ports at the command line interface (CLI), and one power supply module fails or is removed, power to the high priority ports is maintained, and power to the low priority ports is dropped. When assigning priority to PoE or PoE+ ports, it is important to assign priorities on the basis of power supply capacity.

Figure 36 PWR-RGD-AC-DC Power Supply Module

1

Power supply module

3

Captive screw

2

PSU OK LED

Figure 37 PWR-RGD-LOW-DC Power Supply Module

1

Power supply module

3

Captive screw

2

PSU OK LED

For a description of the PSU OK LEDs, see Power Supply Module LEDs.

Power Supply Module Installation

■Installation Guidelines

■Installing a Power Supply Module

■Wiring the Power Source

■Removing the Power Supply Module

Installation Guidelines

Observe these guidelines when removing or installing a power supply module:

A power supply module that is only partially connected to the switch disrupts the system operation.

Warning: Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards, faceplates, front covers, and rear covers are in place.

Statement 1029

Note: You can order the blank cover (part number RPS-CG-COVER=).

Warning: Do not reach into a vacant slot while installing or removing a module. Exposed circuitry is an energy hazard. Statement 206

Warning: Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030

Warning: Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001

Installing a Power Supply Module

This procedure is for installing a power supply module in the PSU1 or PSU2 slot.

Warning: The covers are an integral part of the safety design of the product. Do not operate the unit without the covers installed. Statement 1077

Warning: This unit might have more than one power supply connection. All connections must be removed to de-energize the unit. Statement 1028

Caution: Equipment installation must comply with local and national electrical codes.

Equipment That You Need

■Ratcheting torque flathead screwdriver that exerts up to 15-inch pound (in-lb) of torque

■Ring, spade, or flanged spade terminal

–Ring terminal (such as Tyco part number 2-34158-1 for 16 – 14 AWG or 2-34852-1 for 12 – 10 AWG wire)

–Spade terminal (such as Tyco part number 54367-2 for 16 – 14 AWG wire)

–Flanged spade terminal (such as Tyco part number 2-324165-1 for 16 – 14 AWG wire or 1-324581-1 for 12 – 10 AWG wire)

Note: For IP-30 compliance:

–Use the 16-14 AWG wire and appropriate terminals for the AC or high-voltage DC power supply

–Use the12-10 AWG wire and appropriate terminals for the low-voltage DC power supply

■Crimping tool (such as Thomas & Bett part number WT2000, ERG-2001)

■6-gauge copper ground wire (such as Belden part number 9906)

■12-AWG wire (minimum) for the low-voltage power supply module and 16-AWG (minimum) wire for the high-voltage power supply module

■For power source connections, use wires rated for at least 194°F (90°C).

■UL- and CSA-rated style 1007 or 1569 twisted-pair copper wire (such as Belden part number 9318)

■Wire-stripping tools for stripping 6-, 10-, 12-, 14-, and 16-gauge wires.

■Number-2 Phillips screwdriver

■Flat-blade screwdriver

Grounding the Switch

Follow the grounding procedures at your site and observe these warnings:

Warning: This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. Statement 1024

Warning: When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046

Caution: Follow the grounding procedure instructions, and use a UL-listed lug (included with the switch) for number-6 AWG wire and 10-32 ground-lug screws.

Note: You can use the grounding lug to attach a wrist strap for ESD protection during servicing.

Note: Follow the grounding requirements for your site.

To install a dual-hole lug on the switch:

1. Use a Phillips screwdriver or a ratcheting torque screwdriver with a Phillips head to remove the ground screw from the cable side of the switch.

You need this screw later

2. Strip the 6-gauge ground wire to 0.5 inch (12.7 mm) ± 0.02 inch (0.5 mm) (see Figure 38).

Note: Stripping more than the recommended amount of wire can leave exposed wire from the connector.

Figure 38 Stripping the Ground Wire

3. Insert the ground wire into the terminal lug, and crimp the terminal to the wire (see Figure 39).

Figure 39 Crimping the Terminal Lug

4. Slide the ground screw from Step 1 through the terminal lug.

5. Insert the ground screws into the opening on the cable side.

Figure 40 Attaching the Terminal Lug

1

Dual-hole terminal lug

6. Use a ratcheting torque screwdriver to tighten the ground screws to 30 in-lb (± 2 in-lb).

7. Attach the other end of the ground wire to a grounded bare metal surface, such as a ground bus or a grounded bare rack.

Installing the Power Supply Module in the Switch

1. Ensure that the power is off at the AC or DC circuits.

Locate the circuit breakers, turn them OFF, and tape them in the OFF position.

Note: If the power is not off at the AC or DC circuit breaker, do not touch the power-input terminal.

2. Use a Phillips screwdriver to loosen the two captive screws of the blank power supply module and gently pull it out. See Figure 41 and Figure 42.

Figure 41 Loosen the Screws on the Power Supply Blank

Figure 42 Remove the Power Supply Blank

3. Insert the power supply module into the slot, and gently push it in (see Figure 43).

Note: Ensure that the power supply module is flush with the switch.

Figure 43 Insert the Power Supply Module

4. Use a ratcheting torque screwdriver to torque each screw to 8–10 in-lb.

Wiring the Power Source

Before you wire the power source, review the warnings in this section:

Warning: This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than:

AC: 5 A, DC: 15 A Statement 1005

Warning: A readily accessible two-poled disconnect device must be incorporated in the fixed wiring.

Statement 1022

Warning: Only trained and qualified personnel should be allowed to install or replace this equipment.

Statement 1030

Warning: Hazardous voltage or energy may be present on power terminals. Always replace cover when terminals are not in service. Be sure uninsulated conductors are not accessible when cover is in place. Statement 1086

1. Ensure that the power is off at the AC or DC circuits.

Locate the circuit breakers, turn them OFF, and tape them in the OFF position.

Note: Do not connect the switch to a power source that has an ON/OFF switch.

2. Use a Phillips screwdriver to loosen the captive screw on the power-input terminal, and open the cover.

Figure 44 Opening the Power-Input Terminal Cover

The terminal screws labels are on the power-input terminal cover (see Figure 45).

Figure 45 Power-Input Terminal

1

Line connection for high-voltage AC (PSU1)

8

Line connection for high-voltage AC (for PSU2)

2

Neutral connection for high-voltage AC (PSU1)

9

Neutral connection for high-voltage AC (PSU2)

3

Positive connection for high-voltage DC (PSU1)

10

Positive connection for high-voltage DC (PSU2)

4

Negative connection for high-voltage DC (PSU1)

11

Negative connection for high-voltage DC (PSU2)

5

PSU1 (power supply module 1)

12

PSU2 (power supply module 2)

6

Positive connection for low-voltage DC (PSU1)

13

Positive connection for low-voltage DC (PSU2)

7

Negative connection for low-voltage DC (PSU1)

14

Negative connection for low-voltage DC (PSU2)

Note: The power supply module 1 connection is labeled PSU1, and the power supply module 2 connection is labeled PSU2. Make sure that you connect the wires to the correct terminal screws.

3. Use twisted-pair copper wire (14- to 18-AWG) to connect from the power-input terminal to the power source.

Note: Use 12-AWG (minimum) for the low-voltage DC power supply module. Use 16-AWG (minimum) for the high-voltage AC or DC power supply module.

4. Strip each of the two wires to 0.25 inch (6.3 mm) ± 0.02 inch (0.5 mm).

Note: Do not strip more than 0.27 inch (6.8 mm) of insulation from the wire. Stripping more than the recommended amount of wire can leave exposed wire from the connector after installation.

Figure 46 Stripping the Input Power Source Wire

5. Insert the wire into a spade terminal, and crimp the it to the wire.

You can also use a ring or flanged spade terminal as listed in the Equipment That You Need.

Figure 47 Crimping the Spade Terminal Lug

6. Loosen the terminal screw, and slide the terminal under the screw and washer (see Figure 49).

Note: Use the appropriate terminal screws, depending on whether you are installing a high-voltage (AC or DC) or a low-voltage (DC) power supply.

7. Make the power connection:

AC Power Connection

–Connect the line wire into the terminal screw labeled L and the neutral wire into the terminal screw labeled N to complete the AC connection.

Figure 48 Connecting the Wires to the High-Voltage AC Power (PSU1)

DC Power Connection

–Connect the positive wire into the terminal screw labeled “ +” , and the negative wire into the terminal screw labeled “ – ”.

Low-voltage DC Power-Supply Module

–Connect the wires to the terminals labeled Lo .

High-voltage DC Power-Supply Module

–Connect the wires to the terminals labeled Hi .

Note: Ensure that you cannot see any wire lead. Only wire with insulation should extend from the terminal screw.

Figure 49 Connecting the Wires to the Low-Voltage DC Power (PSU2)

8. Torque the captive screws (above the wires) to 8.5 in-lb (± 0.5 in-lb).

9. Complete the power connection:

AC Power Connection

–Connect the other end of the line wire (the one connected to L ) to the line terminal on the AC-power source, and connect the other end of the neutral wire (the one connected to N ) to the neutral terminal on the AC power source.

DC Power Connection

–Connect the other end of the positive wire (the one connected to + ) to the positive terminal on the DC-power source, and connect the other end of the negative wire (the one connected

to – ) to the negative terminal on the DC power source.

Note: Ensure that you cannot see any wire lead. Only wire with insulation should extend from the terminal screw.

10. If you have two power supplies, repeat steps 1 through 10.

11. Close the power-input terminal cover.

12. Use a ratcheting torque screwdriver to torque the screw to 6–8 in-lb.

13. Turn on the power at the AC or DC circuit, verify that the PSU1 or PSU2 LED on the switch and PSU OK LED on the power supply module are green.

See the switch software guide for information on how to configure the power supply settings.

Removing the Power Supply Module

The power supply modules are hot-swappable. By removing the power supply modules, you can power off the switch without disconnect the wiring from the power-input terminal.

1. Ensure that the power is off at the AC or DC circuits.

Locate the circuit breakers, turn them OFF, and tape them in the OFF position.

Warning: If the power is not off at the AC or DC circuit breaker, do not touch the power-input terminal.

2. Verify that the PSU LED and PSU OK LED is blinking red or is off.

3. Use a Phillips screwdriver to loosen the captive screws that secure the power supply module to the switch (see Figure 50).

Warning: Hot surface. Statement 1079

Figure 50 Removing the Screws

4. Remove the power supply module from the power slot.

The power supply module might be hot (see Figure 51).

5. Install a new power supply module or a blank cover.

Figure 51 Removing the Power Supply Module

Caution: To prevent exposure to hazardous voltages and to contain electromagnetic interference (EMI), either a power supply module or a blank cover must be in each power supply module slot at all times. You can order the blank cover (part number RPS-CG-COVER=).

Troubleshooting

This section contains the following topics:

■Diagnosing Problems

■Resetting the Switch to the Factory Default Settings

■Finding the Switch Serial Number

Diagnosing Problems

The switch LEDs provide troubleshooting information about the switch. They show POST failures, port-connectivity problems, and overall switch performance. You can also get statistics from the device manager, the CLI, or an SNMP workstation. See the software configuration guide, the switch command reference guide on Cisco.com, or the documentation that came with your SNMP application for details.

The following topics contain approaches to diagnosing problems:

■Switch POST Results

■Switch LEDs

■Switch Connections

■Switch Performance

Switch POST Results

See the Verifying Switch Operation for information on POST.

Note: POST failures are usually fatal. Contact your Cisco technical support representative if your switch does not pass POST.

Switch LEDs

Look at the port LEDs information when troubleshooting the switch. See the LEDs for a description of the LED colors and their meanings.

Switch Connections

■Bad or Damaged Cable

■Ethernet and Fiber-Optic Cables

■Link Status

■10/100 and 10/100/1000 Port Connections

■10/100 PoE+ Port Connections

■SFP Modules

■Interface Settings

■Ping End Device

■Spanning Tree Loops

Bad or Damaged Cable

Always examine the cable for marginal damage or failure. A cable might be just good enough to connect at the physical layer, but it could corrupt packets as a result of subtle damage to the wiring or connectors. You can identify this problem because the port has many packet errors or it constantly flaps (loses and regains link).

■Exchange the copper or fiber-optic cable with a known good cable.

■Look for broken or missing pins on cable connectors.

■Rule out any bad patch panel connections or media converters between the source and the destination. If possible, bypass the patch panel, or eliminate media converters (fiber-optic-to-copper).

■Try the cable in another port to see if the problem follows the cable.

Ethernet and Fiber-Optic Cables

Ensure that you have the correct cable:

■For Ethernet, use Category 3 copper cable for 10 Mb/s UTP connections. Use either Category 5, Category 5e, or Category 6 UTP for 10/100 or 10/100/1000 Mb/s connections.

■Verify that you have the correct fiber-optic cable for the distance and port type. Make sure that the connected device ports match and use the same type encoding, optical frequency, and fiber type.

■Determine if a copper crossover cable was used when a straight-through was required or the reverse. Enable auto-MDIX on the switch, or replace the cable. See Table 11 for recommended Ethernet cables.

Link Status

Verify that both sides have link. A broken wire or a shutdown port can cause one side to show link even though the other side does not have link.

A port LED that is on does not guarantee that the cable is functional. It might have encountered physical stress, causing it to function at a marginal level. If the port LED does not turn on:

■Connect the cable from the switch to a known good device.

■Ensure that both ends of the cable are connected to the correct ports.

■Verify that both devices have power.

■Verify that you are using the correct cable type. See the Connector and Cable Specifications for information.

■Look for loose connections. Sometimes a cable appears to be seated but is not. Disconnect the cable, and then reconnect it.

10/100 and 10/100/1000 Port Connections

A port appears to malfunction:

■Verify the status of all ports. See Table 8 for descriptions of the LEDs and their meanings.

■Use the show interfaces privileged EXEC command to see if the port is error-disabled, disabled, or shut down. Re-enable the port if necessary.

■Verify the cable type. See Connector and Cable Specifications.

10/100 PoE+ Port Connections

A powered device connected to a PoE+ port does not receive power:

■Verify the status of all the ports. See Table 8 for descriptions of the LEDs and their meanings.

■Use the show interfaces privileged EXEC command to see if the port is error-disabled, disabled, or shutdown. Re-enable the port if necessary.

■Verify the cable type. Many legacy powered devices, including older Cisco IP phones and access points that do not fully support IEEE 802.3af or IEEE 802 (PoE and PoE+ standards) might not support PoE or PoE+ when connected to the switch by a crossover cable. Replace the crossover cable with a straight-through cable.

Caution: Non-compliant cabling or powered devices can cause a PoE or PoE+ port fault. Use only compliant cabling to connect Cisco prestandard IP Phones, and wireless access points, IEEE 802.3af or IEEE 802.3at-compliant devices.

SFP Modules

Use only Cisco SFP modules. Each Cisco module has an internal serial EEPROM that is encoded with security information. This encoding verifies that the module meets the requirements for the switch.

■Inspect the SFP module. Exchange the suspect module with a known good module.

■Verify that the module is supported on this platform. (The switch release notes on Cisco.com list the SFP modules that the switch supports.)

■Use the show interfaces privileged EXEC command to see if the port or module is error-disabled, disabled, or shutdown. Re-enable the port if needed.

■Ensure that all fiber-optic connections are clean and securely connected.

Interface Settings

Verify that the interface is not disabled or powered off. If an interface is manually shut down on either side of the link, it does not come up until you re-enable the interface. Use the show interfaces privileged EXEC command to see if the interface is error-disabled, disabled, or shut down on either side of the connection. If needed, re-enable the interface.

Ping End Device

Ping from the directly connected switch first, and then work your way back port by port, interface by interface, trunk by trunk, until you find the source of the connectivity issue. Make sure that each switch can identify the end device MAC address in its Content-Addressable Memory (CAM) table.

Spanning Tree Loops

STP loops can cause serious performance issues that look like port or interface problems.

A unidirectional link can cause loops. It occurs when the traffic sent by the switch is received by the neighbor, but the traffic from the neighbor is not received by the switch. A broken cable, other cabling problems, or a port issue could cause this one-way communication.

You can enable UniDirectional Link Detection (UDLD) on the switch to help identify unidirectional link problems. For information about enabling UDLD on the switch, see the “Understanding UDLD” section in the switch software configuration guide on Cisco.com.

Switch Performance

■Speed, Duplex, and Auto-Negotiation

■Auto-Negotiation and Network Interface Cards

■Cabling Distance

Speed, Duplex, and Auto-Negotiation

Port statistics that show a large amount of alignment errors, Frame Check Sequence (FCS), or late collisions errors, might mean a speed or duplex mismatch.

A common issue occurs when duplex and speed settings are mismatched between two switches, between a switch and a router, or between the switch and a workstation or server. Mismatches can happen when manually setting the speed and duplex or from auto-negotiation issues between the two devices.

To maximize switch performance and to ensure a link, follow one of these guidelines when changing the duplex or the speed settings.

■Let both ports autonegotiate both speed and duplex.

■Manually set the speed and duplex parameters for the interfaces on both ends of the connection.

■If a remote device does not autonegotiate, use the same duplex settings on the two ports. The speed parameter adjusts itself even if the connected port does not autonegotiate.

Auto-Negotiation and Network Interface Cards

Problems sometimes occur between the switch and third-party network interface cards (NICs). By default, the switch ports and interfaces autonegotiate. Laptops or other devices are commonly set to autonegotiate, yet sometimes issues occur.

To troubleshoot auto-negotiation problems, try manually setting both sides of the connection. If this does not solve the problem, there could be a problem with the firmware or software on the NIC. You can resolve this by upgrading the NIC driver to the latest version.

Cabling Distance

If the port statistics show excessive FCS, late-collision, or alignment errors, verify that the cable distance from the switch to the connected device meets the recommended guidelines. See the Cables and Adapters.

Resetting the Switch to the Factory Default Settings

Note: Resetting the switch deletes the current configuration and reboots the switch.

To reset the switch to the factory default settings:

1. At the switch prompt, enter enable , and press Return or Enter .

2. At the Privileged EXEC prompt, switch #, enter setup and press Return or Enter .

The switch displays the prompt to run the initial configuration dialog. See the Configuring the Switch with the CLI Setup Program.

Finding the Switch Serial Number

If you contact Cisco Technical Assistance, you need to know the switch serial number. Figure 52 and Figure 53 show the serial number locations. You can also use the show version privileged EXEC command to see the switch serial number.

Figure 52 Serial Number Location for Cisco CGS-2520-24TC and CGS-2520-16S-8PC Switches

Figure 53 Serial Number Location for the Power Supply Modules

Configuring the Switch with the CLI Setup Program

This appendix provides a command-line interface (CLI) setup procedure for a standalone switch. To set up the switch by using Express Setup, see the Cisco CGS 2520 Getting Started Guide . Before connecting the switch to a power source, review the safety warnings in Switch Installation and Power Supply Module Installation.

Accessing the CLI Through the Console Port

You can enter Cisco IOS commands and parameters through the CLI. Use one of these options to access the CLI:

■RJ-45 Console Port

■USB Console Port

RJ-45 Console Port

1. Connect the RJ-45-to-DB-9 adapter cable to the 9-pin serial port on the PC.

2. Connect the other end of the cable to the switch console port.

3. Start the terminal-emulation program on the PC or the terminal.

The program, frequently a PC application such as HyperTerminal or ProcommPlus, makes communication between the switch and your PC or terminal possible.

Figure 54 Connecting the Console Cable

1

RJ-45 console port

2

Console cable (RJ-45-to-DB-9 adapter cable)

4. Configure the baud rate and character format of the PC or terminal to match the console port characteristics:

–9600 baud

–8 data bits

–1 stop bit

–No parity

–None (flow control)

5. Connect power to the switch as described in the Power Supply Module Installation.

6. The PC or terminal displays the bootloader sequence. Press Enter to display the setup prompt. Follow the steps in the Completing the Setup Program.

USB Console Port

1. If you are connecting the switch USB console port to a Windows-based PC for the first time, install a USB driver. See Figure 55.

–Installing the Cisco Microsoft Windows XP USB Driver

–Installing the Cisco Microsoft Windows 2000 USB Driver

–Installing the Cisco Microsoft Windows Vista USB Driver

Figure 55 Connecting the USB Console Cable

1

USB console port

3

USB port on the PC

2

USB cable

2. Connect an USB cable to the PC USB port.

3. Connect the other end of the cable to the switch mini-B (5-pin-connector) USB console port (see Figure 55).

4. To identify the COM port assigned to the USB console port:

a. Choose Start > Control Panel > Systems

b. Click the Hardware tab and choose Device Manager .

c. Expand the Ports section.

The assigned COM port appears in parenthesis at the end of the line with the entry: Cisco USB System Management Console.

5. Start the terminal-emulation program on the PC or the terminal.

The program, frequently a PC application such as HyperTerminal or ProcommPlus, makes communication possible between the switch and your PC or terminal.

6. Configure the COM port.

7. Configure the baud rate and character format of the PC or terminal to match the console port characteristics:

–9600 baud

–8 data bits

–1 stop bit

–No parity

–None (flow control)

8. Connect power to the switch as described in the Power Supply Module Installation.

The PC or terminal displays the bootloader sequence.

9. Press Enter to display the setup prompt.

Installing the Cisco Microsoft Windows USB Device Drivers

Installing the Cisco Microsoft Windows XP USB Driver

1. Obtain the file Cisco_usbconsole_driver.zip from Cisco.com, and unzip it.

Note: You can download the driver file from the Cisco.com software download site.

2. Start the Cisco Virtual Com InstallShield Wizard:

–If using 32-bit Windows XP, double-click the setup.exe file in the Windows_32 folder.

–If using 64-bit Windows XP, double-click the setup(x64).exe file in the Windows_64 folder.

The Cisco Virtual Com InstallShield Wizard begins.

3. Click Next .

The Ready to Install the Program window appears.

4. Click Install .

The InstallShield Wizard Completed window appears.

5. Click Finish .

6. Connect the USB cable to the PC and to the switch console port.

The USB console port LED turns green, and the Found New Hardware Wizard appears.

7. Follow the instructions to complete the driver installation.

Installing the Cisco Microsoft Windows 2000 USB Driver

1. Obtain the file Cisco_usbconsole_driver.zip from Cisco.com, and unzip it.

Note: You can download the driver file from the Cisco.com software download site.

2. Double-click the setup.exe file.

The Cisco Virtual Com InstallShield Wizard begins.

3. Click Next.

The Ready to Install the Program window appears.

4. Click Install.

The InstallShield Wizard Completed window appears.

5. Click Finish.

6. Connect the USB cable to the PC and to the switch console port.

The USB console port LED turns green, and the Found New Hardware Wizard appears.

7. Follow the instructions to complete the driver installation.

Installing the Cisco Microsoft Windows Vista USB Driver

1. Obtain the file Cisco_usbconsole_driver.zip from Cisco.com, and unzip it.

Note: You can download the driver file from the Cisco.com software download site.

2. Start the Cisco Virtual Com InstallShield Wizard:

–If using 32-bit Windows Vista, double-click the setup.exe file in the Windows_32 folder.

–If using 64-bit Windows Vista, double-click the setup(x64).exe file in the Windows_64 folder.

The Cisco Virtual Com InstallShield Wizard begins.

3. Click Next .

The Ready to Install the Program window appears.

4. Click Install .

Note: If a User Account Control warning appears, click Allow - I trust this program .

The InstallShield Wizard Completed window appears.

5. Click Finish .

6. Connect the USB cable to the PC and to the switch console port.

The USB console port LED turns green, and the Found New Hardware Wizard appears.

7. Follow the instructions to complete the driver installation.

Uninstalling the Cisco Microsoft Windows USB Drivers

Uninstalling the Cisco Microsoft Windows XP and 2000 USB Driver

The driver can be removed using the Windows Add or Remove Programs utility or with the setup.exe file.

Using the Add or Remove Programs Utility

Note: Disconnect the switch console terminal before uninstalling the driver.

1. Choose Start > Control Panel > Add or Remove Programs .

2. Scroll to Cisco Virtual Com , and click Remove.

The Program Maintenance window appears

3. Select the Remove radio button.

4. Click Next.

Using the Setup.exe Program

Note: Disconnect the switch console terminal before uninstalling the driver.

1. Start the Cisco Virtual Com InstallShield Wizard:

–If using 32-bit Windows Vista, double-click the setup.exe file in the Windows_32 folder.

–If using 64-bit Windows Vista, double-click the setup(x64).exe file in the Windows_64 folder.

2. Click Next.

The InstallShield Wizard for Cisco Virtual Com appears.

3. Click Next.

The Program Maintenance window appears

4. Select the Remove radio button.

5. Click Next.

The Remove the Program window appears.

6. Click Remove.

The InstallShield Wizard Completed window appears.

7. Click Finish.

Uninstalling the Cisco Microsoft Windows Vista USB Driver

Note: Disconnect the switch console terminal before uninstalling the driver.

To uninstall the Windows Vista USB driver:

1. Start the Cisco Virtual Com InstallShield Wizard:

–If using 32-bit Windows Vista, double-click the setup.exe file in the Windows_32 folder.

–If using 64-bit Windows Vista, double-click the setup(x64).exe file in the Windows_64 folder.

2. Click Next.

The InstallShield Wizard for Cisco Virtual Com appears.

3. Click Next.

The Program Maintenance window appears.

4. Select the Remove radio button.

5. Click Next.

The Remove the Program window appears.

6. Click Remove.

Note: If a User Account Control warning appears, click Allow - I trust this program to proceed.

The InstallShield Wizard Completed window appears.

7. Click Finish.

Entering the Initial Configuration Information

To set up the switch, you need to complete the setup program, which runs automatically after the switch powers on. You must assign an IP address and other configuration information necessary for the switch to communicate with the local routers and the Internet.

IP Settings

Gather this information:

■Switch IP address

■Subnet mask (IP netmask)

■Default gateway (router)

■Enable secret password

■Enable password

■Telnet password

Completing the Setup Program

To complete the setup program and to create an initial configuration for the switch:

1. Enter Yes at these two prompts.

Would you like to enter the initial configuration dialog? [yes/no]: yes

At any point you may enter a question mark '?' for help.

Use ctrl-c to abort configuration dialog at any prompt.

Default settings are in square brackets '[]'.

Basic management setup configures only enough connectivity

for management of the system, extended setup will ask you

to configure each interface on the system.

Would you like to enter basic management setup? [yes/no]: yes

2. Enter a host name for the switch, and press Return.

On a command switch, the host name is limited to 28 characters and on a member switch to 31 characters. Do not use -n , where n is a number, as the last character in a host name for any switch.

Enter host name [Switch]: host_name

3. Enter an enable secret password, and press Return.

The password can be from 1 to 25 alphanumeric characters, can start with a number, is case sensitive, allows spaces, but ignores leading spaces. The secret password is encrypted, and the enable password is in plain text.

Enter enable secret: secret_password

4. Enter an enable password, and press Return.

Enter enable password: enable_password

5. Enter a virtual terminal (Telnet) password, and press Return.

The password can be from 1 to 25 alphanumeric characters, is case sensitive, allows spaces, but ignores leading spaces.

Enter virtual terminal password: terminal-password

6. (Optional) Configure Simple Network Management Protocol (SNMP) by responding to the prompts. You can also configure SNMP later through the CLI. To configure SNMP later, enter no .

Configure SNMP Network Management? [no]: no

7. Enter the interface name (physical interface or VLAN name) of the interface that connects to the management network, and press Return . For this release, always use vlan1 as that interface.

Enter interface name used to connect to the

management network from the above interface summary: vlan1

8. Configure the interface by entering the switch IP address and subnet mask and pressing Return. The IP address and subnet masks shown below are examples.

Configuring interface vlan1:

Configure IP on this interface? [yes]: yes

IP address for this interface: 10.4.120.106

Subnet mask for this interface [255.0.0.0]: 255.0.0.0

9. Enter Y to configure the switch as the cluster command switch. Enter N to configure it as a member switch or as a standalone switch.

If you enter N , you can configure the switch as a command switch later through the CLI. To configure it later, enter no .

Would you like to enable as a cluster command switch? [yes/no]: no

You have completed the initial configuration of the switch, and the switch displays its configuration. This is an example of the configuration output:

The following configuration command script was created:

hostname switch1

enable secret 5 $1$Ulq8$DlA/OiaEbl90WcBPd9cOn1

enable password enable_password

line vty 0 15

password terminal-password

no snmp-server

!

no ip routing

!

interface Vlan1

no shutdown

ip address 10.4.120.106 255.0.0.0

!

interface FastEthernet1/0/1

!

interface FastEthernet1/0/2

interface FastEthernet1/0/3

!

...<output abbreviated>

end

10. These choices appear:

[0] Go to the IOS command prompt without saving this config.

[1] Return back to the setup without saving this config.

[2] Save this configuration to nvram and exit.

If you want to save the configuration and use it the next time the switch reboots, select option 2 to save it in NVRAM.

Enter your selection [2]:2

11. Make your selection, and press Return .

After you complete the setup program, the switch can run the default configuration you created.

To change this configuration or perform other management tasks, enter commands at the Switch> prompt .

Cisco CGS 2520 Hardware Installation Guide

First Published: August 2011

Last Updated: May 2015

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.

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The following information is for FCC compliance of Class B devices: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If the equipment causes interference to radio or television reception, which can be determined by turning the equipment off and on, users are encouraged to try to correct the interference by using one or more of the following measures:

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Cisco CGS 2520 Hardware Installation Guide

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