Cisco 6500 - Manual (Page 34)

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Cisco IOS Software Configuration Guide, Release 12.2SX
OL-13013-06
Chapter 4 Configuring Virtual Switching Systems
Configuring a VSS
Perform the following task on Switch 2:
Converting the Chassis to Virtual Switch Mode
Conversion to virtual switch mode requires a restart for both chassis. 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 on the RP. This file is assigned a default name,
but you are also prompted to override the default name if you want to change it.
Prior to the conversion, ensure that the PFC operating mode matches on both chassis. If they do not
match, VSS comes up in RPR redundancy mode. Enter the show platform hardware pfc mode
command on each chassis to display the current PFC mode. If only one of the chassis is in PFC3CXL
mode, you can configure it to use PFC3C mode with the platform hardware vsl pfc mode pfc3c
command.
To verify the PFC operating mode, perform this task:
To convert Chassis 1 to virtual switch mode, perform this task:
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.
Step 3 Switch-2(config-if)# no shutdown Activates the port.
Command Purpose
Step 1 Switch-1# show platform hardware pfc mode Ensures that the PFC operating mode matches on
both chassis, to ensure that the VSS comes up in SSO
redundancy mode.
Step 2 Switch-2# show platform hardware pfc mode Ensures that the PFC operating mode matches on
both chassis, to ensure that the VSS comes up in SSO
redundancy mode.
Step 3 Switch-1(config)# platform hardware vsl pfc mode
pfc3c
(Optional) Sets the PFC operating mode to PFC3C on
Chassis A.
Step 4 Switch-2(config)# platform hardware vsl pfc mode
pfc3c
(Optional) Sets the PFC operating mode to PFC3C on
Chassis B.
Command Purpose
Switch-1# switch convert mode virtual Converts Switch 1 to virtual switch mode.
After you enter the command, you are prompted to
confirm the action. Enter yes.
The system creates a converted configuration file, and
saves the file to the RP bootflash.