VSS Strange Problem
Dear Gents,
I am new to VSS however I am facing a strange problem. I configured the 2 Core switches to be running in VSS mode. When using the show switch virtual role both switches show with one of the switches as ACTIVE and the other as Standby. However on the standby switch the fiber Gigabit module displays ORANGE LED, thus no ports on the STANDBY switch are operating except the TenGig ports which are used for the VSL Link. One more thing that makes the problem look even more strange is that when I shutdown the primary switch the STANDBY switch module goes active (GREEN) and operates properly. When the primary switch comes UP again, both switches appear as ACTIVE ACTIVE. The configuration I used is relatively sample:
SW1
switch virtual domain 10 switch 1 priority 200 switch 2 priority 100 switch 1 mac-address use virtual exit
int port-channel 1 switch virtual link 1 no sh exit
int range tengig5/4-5 channel-group 1 mode on no sh exit
switch convert mode virtual
SW2 switch virtual domain 10 switch 1 priority 200 switch 2 priority 100 switch 2 mac-address use virtual
int port-channel 2 switch virtual link 2 no sh exit
int range tengig5/4-5 channel-group 2 mode on no sh exit
switch convert mode virtual
Hi Karim,
which version do you use ? I also installed and configure in the last 5 month about 6 VSS systems. I two of them I also got the same problem. So collegues tell me I should use the newest IOS version. I make an update to version 12.2(33)SXI3 and all works as expected.
Bevor I had version 12.2(33)SXH5 running !
Regards Dennis
Am Sonntag, den 31.01.2010, 10:08 +0300 schrieb karim jamali:
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thank you man.
I will check it as I am now off site and didn’t check the IOS version yet.
Will let you know about the update!
Hi,
I wonder what version you are using also …
Hi Experts,
I would like to thank you for your support. The version I am running is 12.2(33)SXI1. Do you think it has some caveats related to this?
One more thing which i noticed is that there is the command switch accept mode virtual which copies the VSL configuration from the standby chassis to the active chassis. Probably this is what I might be missing. Probably this is the main reason behind the fact that when I put off one of the switches and get it up again I have problems with VSS.
Your help is much appreciated.
Best Regards,
Dear Gents,
Regarding the VSS problem i mentioned, did anyone test it with the IOS version 12.2(33)SXI1?Shall I go for an upgrade? Note that the original problem was as follows:
I am new to VSS however I am facing a strange problem. I configured the 2 Core switches to be running in VSS mode. When using the show switch virtual role both switches show with one of the switches as ACTIVE and the other as Standby. However on the standby switch the fiber Gigabit module displays ORANGE LED, thus no ports on the STANDBY switch are operating except the TenGig ports which are used for the VSL Link. One more thing that makes the problem look even more strange is that when I shutdown the primary switch the STANDBY switch module goes active (GREEN) and operates properly. When the primary switch comes UP again, both switches appear as ACTIVE ACTIVE. The configuration I used is relatively sample:
SW1
switch virtual domain 10 switch 1 priority 200 switch 2 priority 100 switch 1 mac-address use virtual exit
int port-channel 1 switch virtual link 1 no sh exit
int range tengig5/4-5 channel-group 1 mode on no sh exit
switch convert mode virtual
SW2 switch virtual domain 10 switch 1 priority 200 switch 2 priority 100 switch 2 mac-address use virtual
int port-channel 2 switch virtual link 2 no sh exit
int range tengig5/4-5 channel-group 2 mode on no sh exit
switch convert mode virtual
One more thing which i noticed is that there is the command switch accept mode virtual which copies the VSL configuration from the standby chassis to the active chassis. I missed this command when doing the configuration?
Any help will be much appreciated!
A bug this big would get that code deferred. You could do wr erase on them to clear up the config and walk through it again. Other than that you could open a case with tac – this most certainly is for your work and off topic. Travis
Try something like this:
interface GigabitEthernet1/3/22 description vss dual-active detect switchport switchport mode access channel-group 15 mode desirable end
interface GigabitEthernet2/3/22 description vss dual-active detect switchport switchport mode access channel-group 16 mode desirable
interface Port-channel15 description VSS dual-active detection – sw1 switchport switchport mode access ! interface Port-channel16 description VSS dual-active detection – sw2 switchport switchport mode access
switch mode virtual dual-active detection pagp trust channel-group 15 dual-active detection pagp trust channel-group 16
You’ll need a dedicated gig connection for this (e.g. g1/3/22 & g2/3/22)
Regards,
Ron Johns CCNP, CCDP, CCSP, CISSP, CCIE#25612