05-24-2016 12:35 PM - edited 03-08-2019 05:55 AM
I have a design question about the cisco VSS technology between 2 cisco 6807's.
Say i have the following design:
I connect every access switch with 4 physical links to each switch in the VSS design. So i can make 2 port channels to the cores. But since STP will not intervene on a port-channel i wonder: Am i not making a bridge loop here? Is there another way to work this out?
The uplinks would be 10gig.
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05-24-2016 01:07 PM
in your design - at each access layer switch - one portchannel will be STP blocking.
Logically the two VSS switches are seen/managed as 1 logically switch. It's a best practice/valid/possible to combine the 4 links into 1 portchannel instead of two.
Let me know if you've further questions
05-24-2016 01:07 PM
in your design - at each access layer switch - one portchannel will be STP blocking.
Logically the two VSS switches are seen/managed as 1 logically switch. It's a best practice/valid/possible to combine the 4 links into 1 portchannel instead of two.
Let me know if you've further questions
05-24-2016 01:13 PM
Ok that's what i thought and needed confirmation on, thanks for that.
I can also just make a port channel to 1 device, because the interfaces on switch will be in that VSS logical switch indeed.
Thanks
05-24-2016 01:34 PM
Correct,
Once in VSS there's only 1 device to manage.
I suggest also to have a look at the VSS design guide:
http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Campus/VSS30dg/campusVSS_DG/VSS-dg_ch1.html
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