Switch number in VSS

[rhub]

Hi all,

After having some troubles with VSL, I finally had to convert one 6509-E chassis back to a standalone chassis. Now I would like to bring it back into the VSS configration.

Whenever I try to convert it to a virtual system (switch convert mode virtual) I get the msg %Please configure local switch number first". After doing so by entering "switch set switch_num 1 local" I still get the same msg.

Has anyone faced the same situation before ?

Any hints or tipps are very much appreciated.

Thanks and best regards

Roman                  

[Leo Laohoo · Accepted solution]

Duplicate post #2.

[graham smart · Accepted solution]

VSS configuration should be like so..

6500-1

conf t

switch virtual domain 100

switch 1

switch 1 priority 100

switch 2 priority 110

exit

6500-2

conf t

switch virtual domain 100

switch 2

switch 2 priority 110

switch 1 priority 100

exit

Not sure where the switch set switch_num bits come from?

Hope this helps

[rhub]

hi graham,

unfortunately this is exactly the config i've done. when i try to configure po 1 as vsl-link (switch virtual link 1) i get the same msg "%please configure local switch number first".

[graham smart]

I assume a "show switch virtual" command gives no output as yet..?

Seems very strange.

[rhub]

Hi Graham, i finally solved the problem, which indeed was a strange behaviour. First I checked the switch_id in rommon with the command "switch read switch_num local" - the number was correct configured as "1".

I changed this value to "2", which is basically wrong, since the other VSS component already is configured with the same switch number.

After that, I was able to configure Po 1 as VSL channel. Then I changed the switch number back to "1" and finally was able to do the "switch convert mode virtual" and here we go.

Many thanks for replying to my post.

Best regards

Roman    

[graham smart]

Wow madness.

VSS can be a touchy bit of tech.

Ive spent many hours in boot-loops and rommon before finally getting a working solution.

But glad its working It really is lovely when working correctly!

-G

[rhub]

Yes, so did I and indeed I like VSS since it came out first and it works just great

Roman

[alessandro.monti]

Actually this is a possible the explanation:

Once you have assigned the switch number just exit, DO NOT ASSIGN SWITCH PRIORITY YET! If you assign switch priority after assigning the number you will encounter virtual switch link configuration problem that looks like this %Please configure local switch number first under the port-channel interface.

https://cyruslab.net/2012/12/21/cisco-systems-virtual-switching-system/

[Sandesh Sawant]

Very Basic Configuration :: This should work as expected.

VSS(config)#switch virtual domain 100

VSS(config-vs-domain)#switch 1

VSS(config-vs-domain)# exit

VSS(config)#interface port-channel 1

VSS(config-if)#switch virtual link 1

VSS(config-if)#interface TenG 5/4

VSS(config-if)#channel-group 1 mode on

VSS(config-if)#interface TenG 5/5

VSS(config-if)#channel-group 1 mode on

VSS(config-if)#end

VSS#switch set switch_num 1 local 

VSS#switch convert mode virtual

[Sacshiva]

Thanks for the update. It's really helpful.