Cisco 6500 - Manual (Page 39)

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Cisco IOS Software Configuration Guide, Release 12.2SX
OL-13013-06
Chapter 4 Configuring Virtual Switching Systems
Configuring a VSS
Note If you make configuration changes to the switch priority, the changes only take effect after you save the
running configuration to the startup configuration file and perform a reload. The show switch virtual
role command shows the operating and priority values. You can manually set the VSS standby switch to
VSS active using the redundancy force-switchover command.
This example shows how to configure virtual switch priority:
Router(config)# switch virtual domain 100
Router(config-vs-domain)# switch 1 priority 200
Router(config-vs-domain)# exit
This example shows how to display priority information for the VSS:
Router# show switch virtual role
Switch Switch Status Preempt Priority Role Session ID
Number Oper(Conf) Oper(Conf) Local Remote
------------------------------------------------------------------
LOCAL 1 UP FALSE(N) 100(200) ACTIVE 0 0
REMOTE 2 UP FALSE(N) 100(100) STANDBY 8158 1991
In dual-active recovery mode: No
Configuring PFC Mode
If you have a mixture of DFC3C and DFC3CXL switching modules in the VSS, set the PFC mode by
performing this task:
This example shows how to set the PFC configuration mode for the VSS to PFC3C. You can wait until
the next maintenance window to perform the reload command.
Router(config)# platform hardware vsl pfc mode pfc3c
Router(config)# end
Router# reload
If all the supervisor engines and switching modules in the VSS are 3CXL, the following warning is
displayed if you set the PFC mode to PFC3C:
Router(config)# platform hardware vsl pfc mode pfc3c
PFC Preferred Mode: PFC3CXL. The discrepancy between Operating Mode and
Preferred Mode could be due to PFC mode config. Your System has all PFC3XL modules.
Remove ' platform hardware vsl pfc mode pfc3c ' from global config.
This example shows how to display the operating and configured PFC modes:
Router# show platform hardware pfc mode
PFC operating mode : PFC3C
Configured PFC operating mode : PFC3C
Command Purpose
Router(config)# platform hardware vsl pfc mode pfc3c Sets the PFC configuration mode for the VSS to
PFC3C.
Note This command requires a system reload
before it takes effect.
Router# show platform hardware pfc mode Displays the current settings for the PFC mode.