Cisco Catalyst 4500 Series - Converting the Switch to Virtual Switch Mode

5-36
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)SG
OL-30933-01
Chapter 5 Configuring Virtual Switching Systems
Configuring a VSS
You must add the VSL physical ports to the port channel. In the following example, interfaces 10-Gigabit
Ethernet 3/1 and 3/2 on Switch 1 are connected to interfaces 10-Gigabit Ethernet 5/2 and 5/3 on
Switch 2.
Tip For line redundancy, we recommend configuring at least two ports per switch for the VSL. For module
redundancy, the two ports can be on different switching modules in each chassis.
To configure the VSL ports, perform this task on Switch 1:
Note 1G ports, which are converted from 10G ports using a connector, are not supported for VSL. This
impacts Sup7-E and Sup7L-E ports.
On Switch 2, perform this task:
Note 1G ports, which are converted from 10G ports using a connector, are not supported for VSL. This
impacts Sup7-E and Sup7L-E ports.
Converting the Switch to Virtual Switch Mode
Conversion to virtual switch mode requires a restart for both switches. After the reboot, commands that
specify interfaces with module/port now include the switch number. For example, a port on a switching
module is specified by switch/module/port.
Prior to the restart, the VSS converts the startup configuration to use the switch/module/port convention.
A backup copy of the startup configuration file is saved in bootflash. This file is assigned a default name,
but you are also prompted to override the default name if you want to change it.
Step 4
Switch-2(config-if)# no shutdown
Activates the port channel.
Step 5
Switch-2(config-if)# exit
Exits interface configuration mode.
Command Purpose
Command Purpose
Step 1
Switch-1(config)# interface range
tengigabitethernet 3/1-2
Enters configuration mode for interface range
tengigabitethernet 3/1-2 on Switch 1.
Step 2
Switch-1(config-if)# channel-group 10 mode on
Adds this interface to channel group 10.
Command Purpose
Step 1
Switch-2(config)# interface range
tengigabitethernet 5/2-3
Enters configuration mode for interface range
tengigabitethernet 5/2-3 on Switch 2.
Step 2
Switch-2(config-if)# channel-group 20 mode on
Adds this interface to channel group 20.