Converting The Switch To Virtual Switch Mode - Cisco Catalyst 4500 series Administration Manual

Configuring a VSS
Command
Step 4
Switch-2(config-if)# no shutdown
Step 5
Switch-2(config-if)# exit
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.
For line redundancy, we recommend configuring at least two ports per switch for the VSL. For module
Tip
redundancy, the two ports can be on different switching modules in each chassis.
To configure the VSL ports, perform this task on Switch 1:
Command
Step 1
Switch-1(config)# interface range
tengigabitethernet 3/1-2
Step 2
Switch-1(config-if)# channel-group 10 mode on
1G ports, which are converted from 10G ports using a connector, are not supported for VSL. This
Note
impacts Sup7-E and Sup7L-E ports.
On Switch 2, perform this task:
Command
Step 1
Switch-2(config)# interface range
tengigabitethernet 5/2-3
Step 2
Switch-2(config-if)# channel-group 20 mode on
1G ports, which are converted from 10G ports using a connector, are not supported for VSL. This
Note
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.
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)SG
5-36
Chapter 5 Configuring Virtual Switching Systems
Purpose
Activates the port channel.
Exits interface configuration mode.
Purpose
Enters configuration mode for interface range
tengigabitethernet 3/1-2 on Switch 1.
Adds this interface to channel group 10.
Purpose
Enters configuration mode for interface range
tengigabitethernet 5/2-3 on Switch 2.
Adds this interface to channel group 20.
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