VSS PRIORITY

Unanswered Question
May 30th, 2010

i have 2 6500 series switches running vss, can i use same vss priority for both switches in the vss domain

I have this problem too.
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sreeju balan Sun, 05/30/2010 - 23:57

Dear Ganesh,

Very nice document..Thanks a lot

But what cisco recommends for the priority configuration for vss? do you have any idea

Thanks for your support

Ganesh Hariharan Mon, 05/31/2010 - 00:21

Dear Ganesh,

Very nice document..Thanks a lot

But what cisco recommends for the priority configuration for vss? do you have any idea

Thanks for your support

Ok,

The priority tells which will begin as the  active supervisor.

Check out the best practices for VSS deployment by cisco

http://www.cisco.mn/web/DK/assets/docs/presentations/VSS_0109.pdf

Hope to Help !!

Ganesh.H

Remember to rate the helpful post

Reza Sharifi Mon, 05/31/2010 - 12:06

Hi Sreeju,

Cisco or at least our SEs do not recommend priority and preemption.  We also have done some testing with it. It gets very confusing to keep track of primary and backup switch when there is a failure.  The VSS pair becomes some what unpredictable when using priority and preemption since it cause the devices to reboot.

HTH

Reza

smalep Wed, 08/29/2012 - 09:52

Hi,

In the original Cisco VSS implement document they did suggest using priorities but that is no longer recommended and therefore should be avoided.

I would suggest not setting the priority.

Thanks,

graham smart Wed, 08/29/2012 - 10:18

Hey,

We dont bother having different priorites or preempt either.

I cant see any reason for having a "master" as it shouldnt matter what switch is active at any one time.

VSLP tends to resolve whos going to be master happily. Just remember to have dual active crosslinks.

Switch  Switch Status  Priority     Role    Session   ID

        Number         Oper(Conf)           Local    Remote

------------------------------------------------------------------

LOCAL    2     UP       100(100)    ACTIVE   0        0  

REMOTE   1     UP       100(100)    STANDBY  6991     2069

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