Role of VSS active switch

[carl_townshend]

Hi all

I have taken the preempt command deom my switch 1 of out my vss pair.

Switch 2 is now the active vss switch.

what does this really mean? what does the active vss role do ?

cheers

Carl

[InayathUlla Sharieff · Accepted solution]

Carl,

   VSS Active and VSS Standby Chassis

When you create or restart a VSS, the peer chassis negotiate their roles. One chassis becomes the VSS active chassis, and the other chassis becomes the VSS standby.

The VSS active chassis controls the VSS. It runs the Layer 2 and Layer 3 control protocols for the switching modules on both chassis. The VSS active chassis also provides management functions for the VSS, such as module online insertion and removal (OIR) and the console interface.

The VSS active and VSS standby chassis perform packet forwarding for ingress data traffic on their locally hosted interfaces. However, the VSS standby chassis sends all control traffic to the VSS active chassis for processing.

Complete infomration can be obtain from below ref:

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/vss.html

HTH

Regards

Inayath

*Plz rate all usefull posts.

[carl_townshend]

bascially, does the active VSS switch have to be the chassis with the active supervisor card on it ?

[InayathUlla Sharieff]

Carl,

The answer to your question is YES.

REgards

Inayath