Product Overview
The Cisco Metro Ethernet (ME) 3400E Ethernet Access switch—referred to as the switch—is an Ethernet access switch that you can connect to other network devices, such as routers, other switches, a home access gateway (HAG), or a computer.
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Fans
Setting Up the Switch
See the Cisco ME 3400E Ethernet Access Switch Getting Started Guide on the documentation CD for instructions on how to initially configure your switch. The getting started guide also covers switch management options, basic rack-mounting procedures, port and module connections, power connection procedures, and troubleshooting help.
For instructions on setting up your switch using the command-line interface (CLI), see "Configuring the Switch with the CLI-Based Setup Program."
Switch Models
You can deploy the switch as a backbone switch, aggregating 10BASE-T, 100BASE-TX, 1000BASE-T, and fiber-optic Ethernet traffic from other network devices.
See the switch software configuration guide for examples that show how you might deploy the switch in your network.
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Cisco ME 3400E-24TS-M |
24 10/100 FastEthernet downlink ports and 2 dual-purpose ports (2 10/100/1000BASE-T copper ports and 2 SFP1 module slots); supports removable AC- and DC-power supplies. |
Cisco ME 3400EG-12CS-M |
12 dual-purpose ports and 4 SFP-module slots; supports removable AC- and DC-power supplies. |
Cisco ME 3400EG-2CS-A |
2 dual-purpose ports and 2 SFP-module slots, AC-power input. |
1 SFP = small form-factor pluggable. |
Front Panel
Figure 1-1 shows the Cisco ME 3400E-24TS-M front panel. The 10/100 Fast Ethernet downlink 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. You can configure the dual-purpose ports as either copper-based 10/100/1000 ports or as fiber-optic SFP-module ports. See the "SFP Modules" section for more information.
Figure 1-1 Cisco ME 3400E-24TS-M Front Panel
The Cisco ME 3400EG-12CS-M has 12 dual-purpose ports, numbered 1 to 12, and supports both AC and DC power. You can configure these as either copper-based 10/100/1000 ports or as fiber-optic SFP-module ports. The Gigabit Ethernet uplink SFP-module slots are numbered 13 to 16.
Figure 1-2 Cisco ME 3400EG-12CS-M Front Panel
The Cisco ME 3400EG-2CS-A has two dual-purpose ports, numbered 1 and 2. See Figure 1-3. You can configure these ports as either copper-based 10/100/1000 ports or as fiber-optic SFP-module ports. The Gigabit Ethernet uplink SFP-module slots are numbered 3 and 4.
Figure 1-3 Cisco ME 3400EG-2CS-A Front Panel
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LEDs |
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Air intake vents |
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Alarm input port |
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10/100/1000 ports |
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Console port |
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Gigabit Ethernet SFP-module slots |
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Ethernet management port |
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SFP-module slots |
AC- and DC-Power Input Connectors
The Cisco ME 3400E-24TS-M and the Cisco ME 3400EG-12CS support combinations of power-supply modules: two AC, two DC, or one AC and one DC. The two AC- and one DC-power connectors on the front panel accommodate the mixture of AC- and DC-power-supply modules. The DC-power connector has the standard A and B feeds for DC redundancy. See Chapter 3 "Installing and Removing AC- and DC-Power-Supply Modules."
Alarm Input Port
The switch supports four alarm inputs. The alarm input is a dry-contact alarm port. Use the CLI to define each alarm input to respond to a normally open or closed dry-contact closure and to define the alarm severity as minor, major, or critical. When a condition triggers an alarm, the console displays an alarm message, and the corresponding Alarm LED responds (see the "Alarm LEDs" section).
Management Port
You can connect the switch to a host such as a Windows workstation or a terminal server through the 10/100 Ethernet management port or the console port. The 10/100 Ethernet management port connection uses a standard RJ-45 crossover or straight-through Ethernet cable. The console port connection uses the supplied RJ-45-to-DB-9 female cable.
The Ethernet management port operates in any combination of half duplex, full duplex, or 10 or
100 Mb/s, and its traffic is isolated from the other ports. See Table 1-7 for descriptions of the Ethernet management port LEDs. See the "10/100 Ethernet Management Port" section for pinout information.
For console port and adapter pinout information, see the "Console Port Adapter Pinouts" section.
10/100 Fast Ethernet Ports
You can set the 10/100 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 autonegotiation. The default setting is autonegotiate.
When set for autonegotiation, the port senses the speed and duplex settings of the attached device and advertises its own capabilities. If the connected device also supports autonegotiation, the switch port 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).
Dual-Purpose 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. You can also configure them as fixed 10, 100, or 1000 Mb/s (Gigabit) Ethernet ports.
By default, the switch dynamically 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 manually designate the port as an RJ-45 port or an SFP port by using the media-type interface configuration command.
You can configure the speed and duplex settings consistent with the selected media type. For information on configuring interfaces, see the switch software configuration guide.
SFP Modules
The switch Gigabit Ethernet SFP modules are used for connections to other devices. These transceiver modules are field-replaceable, providing the uplink interfaces when inserted in an SFP-module slot. You can use any combination of SFP modules. The SFP modules have LC connectors for fiber-optic connections or RJ-45 connectors for copper connections.
For more information on configuring interfaces, see the switch software configuration guide.
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GLC-FE-100BX-D |
100BASE-BX10 |
GLC-FE-100EX |
100BASE-EX |
GLC-FE-100FX |
100BASE-FX |
GLC-FE-100LX |
100BASE-LX10 |
GLC-FE-100ZX |
100BASE-ZX |
GLC-BX-D |
1000BASE-BX10 |
GLC-LH-SM |
1000BASE-LX/LH |
GLC-SX-MM |
1000BASE-SX |
GLC-T1 |
1000BASE-T and |
SFP-GE-ZX-SM |
1000BASE-ZX |
CWDM-xxxx-SFP |
CWDM |
DWDM-xxxx-SFP |
DWDM |
1 Supported on SFP-only ports, not supported on dual-purpose ports. |
Note The Cisco ME 3400E-24TS-M does not support 1000BASE-T SFP modules.
For more information about SFP modules, see your SFP module documentation and the "Installing and Removing SFP Modules" section. For cable specifications, see "Connector and Cable Specifications."
SFP Module Patch Cable
The switch supports the SFP-module patch cable, a 0.5-meter, copper, passive cable with SFP module connectors at each end (see Figure 1-4). The patch cable connects two switches in a cascaded configuration.
Figure 1-4 SFP-Module Patch Cable
See the "Inserting and Removing the SFP Module Patch Cable" section for more information about using the SFP module patch cable.
You can order the SFP module patch cable (part number CAB-SFP-50CM=).
UNIs, NNIs, and ENIs
The switch supports user-network interfaces (UNIs), network node interfaces (NNIs), and enhanced network interfaces (ENIs). UNIs are typically connected to a host, such as customer premises equipment (CPE) or a home access gateway. NNIs are typically connected to a router or to another switch. ENIs have the same functionality as UNIs, but can be configured to support protocol control packets for
Cisco Discovery Protocol (CDP), Spanning-Tree Protocol (STP), Link Layer Discovery Protocol (LLDP), EtherChannel Link Aggregation Control Protocol (LACP), or Port Aggregation Protocol (PAgP). Every port is in an UNI, ENI, or NNI mode at any time, but not all ports have to all be set the same.
By default, the dual-purpose ports on the Cisco ME 3400E-12CS-M and on the
Cisco ME 3400EG-2CS-A are configured as UNIs, and the SFP-only uplink ports are configured as NNIs. You must specifically configure ports to be ENIs; no ports are ENIs by default. By default, the 10/100 ports on the Cisco ME 3400E-24TS-M are UNIs, and the dual-purpose ports are NNIs.
A port can be reconfigured from UNI to NNI or an ENI, and the reverse. When a port is reconfigured as another interface type, it inherits all the characteristics of that interface type. For information on configuring interfaces, see the switch software configuration guide.
LEDs
You can use the switch system and port LEDs to monitor switch activity and performance.
Switch LED Panels
Figure 1-5 Cisco ME 3400E-24TS-M and Cisco ME 3400EG-12CS-M System and Alarm LEDs
Figure 1-6 Cisco ME 3400EG-2CS-A System and Alarm LEDs
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SYST (system) LED |
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ALM 2 (alarm 2) LED |
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MGMT (Ethernet management port) LED |
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ALM 3 (alarm 3) LED |
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ALM 1 (alarm 1) LED |
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ALM 4 (alarm 4) LED |
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Off |
System is not powered on. |
Blinking green |
POST1 is in progress. |
Green |
System is operating normally. |
Amber |
System is receiving power but is not functioning properly. |
1 POST = power-on self-test. |
Power-Supply Module LEDs
The power-supply module LEDs show whether power-supply modules 1 and 2 are receiving power.
Figure 1-7 Switch Power-Supply LEDs
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AC-power-supply LEDs |
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PSU 2 (power supply 2) LED |
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PSU 1 (power supply 1) LED |
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DC-power-supply LEDs |
The Cisco ME 3400E-24TS-M and the Cisco ME 3400EG-12CS-M have power-supply module LEDs labeled PSU 1 and PSU 2. See Figure 1-7.
When an AC-power-supply module is installed, the AC 1 and AC 2 LEDs show which power supply is on (see Figure 1-7).
When DC-power-supply modules are installed, the DC A and DC B LEDs show which power supply is on (see Figure 1-7).
Ethernet Management Port LED
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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, CRC1 errors, and alignment and jabber errors2 are monitored for a link-fault indication. |
1 CRC = cyclic redundancy check. 2 Jabber errors occur when data packets exceed the prescribed lengths. |
Alarm LEDs
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Off |
No alarm |
Amber |
Minor alarm |
Red |
Major alarm |
Blinking red |
Critical alarm |
Port LEDs
Each RJ-45 port and SFP-module slot has a port LED. These port LEDs, as a group or individually, display information about the switch and about the individual ports.
Dual-Purpose Port LEDs
The dual-purpose port LEDs on the switch show the connection of either a copper-based connector or an SFP module. See Figure 1-8. The ports can autonegotiate, or you can manually configure each dual-purpose port as either an 10/100/1000 with copper connectors or as an SFP-module port, but not both types at the same time.
Figure 1-8 Example of the Switch Dual-Purpose Port LEDs
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SFP-module port in-use LED |
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Copper-based port in-use LED |
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SFP-module slot |
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Copper-based connector |
Rear Panel
The rear panel on the Cisco ME 3400E-24TS-M and the Cisco ME 3400EG-12CS-M has two power-supply slots for installing the removable power supplies and a ground connector. See Figure 1-9.
The rear panel on the Cisco ME 3400EG-2CS-A has a fan exhaust, a ground connection, and an AC-power connector (Figure 1-11).
Figure 1-9 Cisco ME 3400E-24TS-M and Cisco ME 3400EG-12CS-M Rear Panels
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Power-supply slot 1 |
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Ground connection |
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Power-supply slot 2 |
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Figure 1-10 Cisco ME 3400E-24TS-M and Cisco ME3400EG-12CS-M Rear Panels
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Extraction handle |
Figure 1-11 Cisco ME 3400EG-2CS-A Rear Panel
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Fan exhaust |
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AC-power connector |
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Ground connection |
Power Supply Features
The Cisco ME 3400E-24TS-M and Cisco ME 3400EG-12CS-M support two modular redundant power supplies, either AC or DC. The switch requires a single power supply to operate. If a failure occurs with a power supply, replace only that failed power supply to maintain redundancy.
See Chapter 3 "Installing and Removing AC- and DC-Power-Supply Modules," for instructions on installing the AC- and DC-power supplies. See "Technical Specifications," for voltage and other specifications.
Fans
Air flow on an ME-3400E-24TS-M is front to back.
Figure 1-12 ME-3400E-24TS-M Air Flow
The switch can operate with only one fan. For maximum efficiency, at least two of the four fans should be operational in a warm environment. A fan failure triggers an alarm. When a fan fails, replace the power supply immediately.
Management Options
•Cisco IOS CLI
You can fully configure and monitor the switch from the CLI. You can access the CLI either by connecting your management station directly to the switch console port or by using Telnet from a remote management station. See the switch command reference on Cisco.com for more information.
For setup instructions that use the CLI, go to "Configuring the Switch with the CLI-Based Setup Program."
•CiscoView application
The CiscoView device-management application displays the switch image so that you can set configuration parameters and view switch status and performance information. The CiscoView application, which you purchase separately, can be a standalone application or part of a Simple Network Management Protocol (SNMP) platform. See the CiscoView documentation for more information.
•SNMP network management
You can manage switches from a 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 more information.
Network Configurations
See the switch software configuration guide on Cisco.com for an explanation of network configuration concepts. The software configuration guide also provides examples of network configurations that use the switch to create dedicated network segments that are interconnected through Ethernet connections.
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