About the VSS question ？

[HAOYOUJI123]

Hi everyone

  I have a question about the switch which configuration VSS .  After configured VSS ,both switch running normally .

  but ,unfortunately someoneday that the secondary switch breaddown and the configuration losed.

  so in this scene When two switches run VSS the secondary is broken,what should I do reconfigure the VSS.

here is the major configuration on primary switch：

switch virtual domain 100
switch mode virtual
switch 1 priority 120
mac-address use-virtual

!
interface Port-channel101
switch virtual link 1

interface Port-channel102 
switch virtual link 2

interface TenGigabitEthernet1/5/4
channel-group 101 mode on
interface TenGigabitEthernet1/6/4
channel-group 101 mode on

interface GigabitEthernet1/9/1
dual-active fast-hello
!
interface TenGigabitEthernet2/5/4 
channel-group 102 mode on
!
interface TenGigabitEthernet2/6/4
channel-group 102 mode on
!
interface GigabitEthernet2/9/1
dual-active fast-hello

[Reza Sharifi]

Hi,

Your configuration looks correct.  If the stand-by switch breaks down the other switch should be the primary and in that case you bring up the stand-by chassis and connect it to the primary and the configuration will get pushed to the stand-by.  If this happens often, than the problem may be an issue in the IOS version you are running.  You may want to open a TAC with Cisco, send them the information and have them help you troubleshoot the issue.

HTH

[Masoud Pourshabanian]

Hello,

Config SSO on the second switch

redundancy
mode sso
exit

switch virtual domain 100
switch mode virtual
switch 2 priority 50
mac-address use-virtual

interface Port-channel102 

switch virtual link 102
no shut

interface TenGigabitEthernet1/5/4 

no sh
channel-group 102 mode on
!
interface TenGigabitEthernet1/6/4

no sh
channel-group 102 mode on

switch convert mode virtual

You may need to to set this command on the first switch again

switch accept mode virtual

Hope it helps,

Masoud