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This chapter describes how to install and connect a Catalyst 3650 switch. It also includes planning and cabling considerations for stacking switches.
Read the topics and perform the procedures in this order:
2. Planning a Switch Data Stack
4. Installing the StackWise Ports
5. Installing and Removing an SFP and SFP+ Module
6. Connecting a Device to an Ethernet Port
For initial switch setup, how to assign the switch IP address, and for powering information, see the switch getting started guide on Cisco.com.
Ensure that the following sections are read and understood carefully before the switch is installed.
This section includes the basic installation caution and warning statements. Translations of the warning statements appear in the Regulatory Compliance and Safety Information for the Catalyst 3650 Switch at http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3650/hardware/regulatory/compliance/cat3650_rcsi.html. Read this section before you start the installation procedure.
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 stack the chassis on any other equipment. If the chassis falls, it can cause severe bodily injury and equipment damage. Statement 48
Warning Ethernet cables must be shielded when used in a central office environment. Statement 171
Warning Voice over IP (VoIP) service and the emergency calling service do not function if power fails or is disrupted. After power is restored, you might have to reset or reconfigure equipment to regain access to VoIP and the emergency calling service. In the USA, this emergency number is 911. You need to be aware of the emergency number in your country. Statement 361
Warning Attach only the following Cisco external power system to the switch: PWR-RPS2300. Statement 387
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 connecting the system to the 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 The plug-socket combination must be accessible at all times, because it serves as the main disconnecting device. Statement 1019
Warning Use copper conductors only. Statement 1025
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:
113°F (45°C) Statement 1047
Warning No user-serviceable parts inside. Do not open. Statement 1073
Warning Installation of the equipment must comply with local and national electrical codes. Statement 1074
Warning To prevent airflow restriction, allow clearance around the ventilation openings to be at least:
3 in. (7.6 cm) Statement 1076
Note The grounding architecture of this product is DC-isolated (DC-I).
Before installing the switch, verify that these guidelines are met.
– Front-panel indicators can be easily read.
– Clearance is at least 4.4 in. (11.1 cm) from the switch’s rear panel.
– Access to ports is sufficient for unrestricted cabling.
– AC power cord can reach from the AC power outlet to the connector on the switch’s rear panel.
– The SFP or SFP+ module minimum bend radius and connector length are met. See the corresponding SFP or SFP+ module documentation for more information.
– Access to the rear of the rack is sufficient for connecting the optional Cisco RPS 2300 module.
– Network Equipment Building Systems (NEBS) GR-63-CORE (only with the DC power supply)
– National Electrical Manufacturers Association (NEMA) Type 1
Before you install the switch in a rack, or on a table or shelf, you should power on the switch and verify that the switch passes POST. For the steps that should be performed to connect a PC to the switch and to run the Express Setup, see the “Running Express Setup” section in the Catalyst 3650 Switch Getting Started Guide at http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3650/hardware/quick/guide/cat3650_gsg.html.
Note When you connect the RPS to the switch, put the RPS in standby mode. Set the RPS to active mode during normal operation.
Warning Attach only the following Cisco external power system to the switch: PWR-RPS2300. Statement 387
After a successful POST, disconnect the power cord from the switch. Install the switch in a rack, on a table, or on a shelf, as described in “Installing the Switch,” section.
Catalyst 3650 switches can share bandwidth by using data stacking.
For general concepts and management procedures for switch stacks, see the Cisco Catalyst 3650 Series Switches Software Configuration Guides at http://www.cisco.com/c/en/us/support/switches/catalyst-3650-series-switches/products-installation-and-configuration-guides-list.html.
A StackWise adapter must be installed in the stacking port to enable stacking. The StackWise cable connects to the StackWise adapter in the stacking port. For switches ordered with stacking, the StackWise adapters are preinstalled. If the switch is not ordered with stacking, the adapters must be ordered separately and installed.
Before connecting the switches in a stack, observe these stacking guidelines:
Note You cannot have a switch stack containing a mix of Catalyst 3650 and Catalyst 3850 switches.
Figure 2-1 is an example of a recommended configuration that uses the supplied 0.5-meter StackWise cable. In this example, the switches are stacked in a vertical rack or on a table. This configuration provides redundant connections.
The configuration example (Figure 2-1) uses the supplied 0.5-meter StackWise cable. The example shows the full-ring configuration that provides redundant connections.
Figure 2-1 Data Stacking the Catalyst 3650 Switches in a Rack or on a Table Using the 0.5-meter StackWise Cables
Figure 2-2 shows a recommended configuration when the switches are mounted side-by-side. Use the 1-meter and the 3-meter StackWise cables to connect the switches. This configuration provides redundant connections.
Figure 2-2 Data Stacking up to Four Switches in a Side-by-Side Mounting
This section provides examples of data stack bandwidth and possible data stack partitioning.
Figure 2-3 shows a data stack of Catalyst 3650 switches that provides full bandwidth and redundant StackWise cable connections.
Figure 2-3 Example of a Data Stack with Full Bandwidth Connections
Figure 2-4 shows an example of a stack of Catalyst 3650 switches with incomplete StackWise cabling connections. This stack provides only half bandwidth and does not have redundant connections.
Figure 2-4 Example of a Data Stack with Half Bandwidth Connections
Figure 2-5 and Figure 2-6 show data stacks of Catalyst 3650 switches with failover conditions. In Figure 2-5, the StackWise cable is bad in link 2. Therefore, this stack provides only half bandwidth and does not have redundant connections. In Figure 2-6, link 2 is bad. Therefore, this stack partitions into two stacks, and the top and bottom switches become the active switches in the stack. If the bottom switch is a member (not the active or standby switch), it reloads.
Figure 2-5 Example of a Data Stack with a Failover Condition
Figure 2-6 Example of a Partitioned Data Stack with a Failover Condition
Consider these guidelines before you power on the switches in a stack:
– If you want a particular switch to become the active switch, configure it with the highest priority. Among switches with same priority, the switch with the lowest MAC address becomes the active switch.
– If you want a particular switch to become the active switch, power on that switch first. This switch remains the active switch until a re-election is required. After 2 minutes, power on the other switches in the stack. If you have no preference as to which switch becomes the active switch, power on all the switches in the stack within 1 minute. These switches participate in the active switch election. Switches powered on after 2 minutes do not participate in the election.
If changes are made to the stack without powering down the switches, the following results might occur:
– More than one running switch is removed without powering down.
– More than one stack cable is removed without powering down.
– A switch is removed without powering down.
– A stack cable is removed without powering down.
Note These results depend on how the switches are connected. You can remove two or more switches from the stack without splitting the stack.
For conditions that may cause a stack re-election or to manually elect the active switch, see the switch’s software configuration guide at:
If you replace a stack member with an identical model, the new switch functions with exactly the same configuration as the replaced switch, assuming that the new switch (referred to as the provisioned switch) is using the same member number as the replaced switch.
The operation of the switch stack continues uninterrupted during membership changes unless you remove the active switch or you add powered-on standalone switches or switch stacks.
Note A switch stack always has one active switch and one standby switch. The active switch contains the saved and running configuration files for the switch stack. If the active switch becomes unavailable, the standby switch assumes the role of the active switch, and continues to the keep the stack operational.
If a newly created switch stack does not have an active switch or standby switch, the switch stack will reload and elect a new active switch.
Note Make sure that you power off the switches that you add to or remove from the switch stack.
After adding or removing stack members, make sure that the switch stack is operating at full bandwidth. Press the Mode button on a stack member until the Stack mode LED is on. The last two right port LEDs on all the switches in the stack should be green. Depending on the switch model, the last two right ports are 10-Gigabit Ethernet ports or small form-factor pluggable (SFP) module ports (10/100/1000 ports). If one or both of these LEDs are not green on any of the switches, the stack is not operating at full bandwidth.
If you remove the powered-on members but do not want to partition the stack:
The illustrations shown in this section show the Catalyst 3650-48 PoE+ switch as an example. You can install other Catalyst 3650 switches following the same procedures.
To install the switch in a 19-inch rack, follow the instructions described in this section.
The 19-inch brackets are included with the switch. Installing the switch in other rack types requires an optional bracket kit that is not included with the switch. Figure 2-7 shows the mounting brackets and part numbers.
Figure 2-7 Rack-Mounting Brackets
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Extension rails and brackets for four-point mounting, includes 19-inch brackets. (4PT-KIT-T1=) |
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To install the switch in a rack, use four No. 8 Phillips flat-head screws to attach the long side of the brackets to the switch for the front-mounting or rear-mounting positions (Figure 2-8). Use four screws to attach the brackets for the front-mounting position.
Figure 2-8 Attaching Brackets for 19-inch Racks
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Figure 2-9 Attaching Brackets for Catalyst 3650-24PDM and Catalyst 3650-48FQM Switches
After the brackets are attached to the switch, use the supplied Phillips machine screws to attach the brackets to the rack (Figure 2-10). Use the black Phillips machine screw to attach the cable guide to the left or right bracket.
Figure 2-10 Mounting the Switch on a Rack
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After you complete the switch installation, see the “After Installing the Switch” section for more information about switch configuration.
To install the switch on a table or shelf, locate the adhesive strip with the rubber feet in the mounting-kit envelope. Attach the four rubber feet to the recessed areas at the bottom of the chassis (see Figure 2-11).
Figure 2-11 Attaching the Adhesive Pads for Table-Mounting or Shelf-Mounting
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After you complete the switch installation, see the “After Installing the Switch” section for more information about the switch configuration.
After the switch is installed, you can configure the switch using various options.
Before connecting the StackWise cables, review the “Planning a Switch Data Stack” section. Always use a Cisco-approved StackWise cable to connect the switches.
Step 1 Remove the dust covers from the StackWise cables and store them for future use.
A StackWise adapter must be installed in the StackWise port to enable stacking. In the default setup, the StackWise adapter blanks are installed in the StackWise ports. If StackWise stacking is ordered with the switch, StackWise adapters are already installed in the StackWise ports, and you can proceed to step 4.
Step 2 Remove the StackWise adapter blanks from each destination StackWise port using the Torx T15 Allen key provided in the stacking kit (or a Torx T15 screwdriver), as shown in Figure 2-12. Store them for future use.
Step 3 Install a StackWise adapter in each destination StackWise port, and secure it in place using the supplied Torx T15 key, or a Torx T15 screwdriver, as shown in Figure 2-13.
Note It is not necessary to remove the fan modules before the removal or installation of the StackWise adapter. If the installation is performed with the system powered on, the fans must be left in the installed position at all times.
Step 4 Connect the StackWise cable to the StackWise port on the switch’s rear panel:
a. Align the StackWise cable connector with the StackWise adapter in the StackWise port.
b. Insert the StackWise cable connector into the StackWise port, as shown in Figure 2-14. Make sure that the Cisco logo is on the top side of the connector.
c. Finger-tighten the screws (clockwise direction).
Step 5 Connect the other end of the cable to the port on the other switch and finger-tighten the screws. Do not overtighten the screws.
Figure 2-12 Removing the StackWise Adapter Blank from a StackWise Port
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Figure 2-13 Installing the StackWise Adapter in a StackWise Port
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Figure 2-14 Connecting the StackWise Cable to the StackWise Adapter
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Note ● When you have to remove the StackWise cable from the connector, make sure that you fully unscrew the correct screws. When the connectors are not being used, replace the dust covers.
This section explains how to install and remove SFP and SFP+ modules.
Warning Class 1 laser product. Statement 1008
Note ● Do not remove the dust plugs from the SFP modules or the rubber caps from the fiber-optic cable until you are ready to connect the cable. The plugs and caps protect the module ports and cables from contamination and ambient light.
To install an SFP or SFP+ module, follow the procedures given below:
Step 1 Attach an ESD-preventive wrist strap to your wrist and to an earth-ground surface.
Step 2 Find the send (TX) and receive (RX) markings that identify the top of the SFP module.
On some SFP modules, the send and receive (TX and RX) markings might be indicated by arrows that show the direction of the connection.
Step 3 If the SFP module has a bale-clasp latch, move it to the open, unlocked position.
Step 4 Align the module in front of the slot opening, and push until you feel the connector snap into place.
Figure 2-15 Aligning the Module in Front of the Slot Opening
Step 5 If the module has a bale-clasp latch, close it to lock the SFP module in place.
Step 6 Remove the SFP dust plugs.
Step 7 Connect the SFP cables.
Figure 2-16 Connecting an SFP Cable to an SFP Module Installed in an Uplink Port
To remove an SFP or SFP+ module, follow the procedures given below:
Step 1 Attach an ESD-preventive wrist strap to your wrist and to an earth ground surface.
Step 2 Disconnect the cable from the SFP module. For reattachment, note which cable connector plug is send (TX) and which is receive (RX).
Step 3 Insert a dust plug into the optical ports of the SFP module to keep the optical interfaces clean.
Step 4 If the module has a bale-clasp latch, pull the bale out and down to eject the module. If you cannot use your finger to open the latch, use a small, flat-blade screwdriver or other long, narrow instrument to open it.
Step 5 Grasp the SFP module, and carefully remove it from the slot.
Step 6 Place the SFP module in an antistatic bag or other protective environment.
The 10/100/1000 Ethernet ports use RJ-45 connectors with Ethernet pinouts. The maximum cable length is 328 feet (100 meters). The 100BASE-TX and 1000BASE-T traffic requires a Category 5, Category 5e, or Category 6 UTP cable. The 10BASE-T traffic can use a Category 3 or Category 4 cable.
The autonegotiation feature is enabled by default on the switch. In this setting, the switch ports configure themselves to operate at the speed of the attached device. If the attached device does not support autonegotiation, you can explicitly 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 on the switch. 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 device at the other end of the connection.
See the switch’s software configuration guide or the switch command reference document on Cisco.com for more information about enabling or disabling autonegotiation and auto-MDIX.
If auto-MDIX is disabled, use the guidelines in Table 2-1 to select the correct cable for connecting the switch 10/100/1000 Ethernet ports to other devices.
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1.100BASE-TX and 1000BASE-T traffic requires a twisted four-pair, Category 5, Category 5e, or Category 6 cable. 10BASE-T traffic can use a Category 3 or Category 4 cable. |
The 100M/1G/2.5G/5G/10G Ethernet ports use RJ45 connectors with Ethernet pinouts. These ports do not support 10 Mbps speed. The 100 Mbps and 1 Gbps traffic require a Category 5/5e/6 unshielded twisted pair (UTP) cable at a maximum cable length of 100 m. The 2.5 Gbps traffic requires a Category 5e/6/6a UTP cable at a maximum cable length of 100 m. The 5 Gbps traffic requires a Category 5e UTP cable at a maximum cable length of 70 m and a Category 6/6a UTP cable at a maximum cable length of 100 m. The 10 Gbps traffic requires a Category 6 UTP cable at maximum cable length of 55 m and a Category 6a UTP cable at maximum cable length of 100 m.
The 10/100/1000 PoE+ and Cisco UPOE ports have the same autonegotiation settings and cabling requirements that are described in the “10/100/1000 Ethernet Port Connections” section. These ports can provide PoE or PoE+ inline power.
PoE inline power supports devices compliant with the IEEE 802.3af standard, as well as prestandard Cisco IP phones and Cisco Aironet Access Points. Each port can deliver up to 15.4 W of PoE.
PoE+ inline power supports devices that are compliant with the IEEE 802.3at standard, by delivering up to 30 W of PoE+ power per port to all the switch ports.
Cisco UPOE ports provide up to 60 W power per port for connected devices.
Note Many legacy-powered devices, including older Cisco IP phones and access points that do not fully support IEEE 802.3af, might not support PoE when connected to the switches by a crossover cable.
Warning Voice over IP (VoIP) service and the emergency calling service do not function if power fails or is disrupted. After power is restored, you might have to reset or reconfigure equipment to regain access to VoIP and the emergency calling service. In the USA, this emergency number is 911. You need to be aware of the emergency number in your country. Statement 361
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
If the default configuration is satisfactory, the switch does not need further configuration. You can use any of these management options to change the default configuration: