WS-C3750G-24TS-1U failover timeout

[IGOPAV]

Hi Community,

I have 2 WS-C3750G-24TS-1U in the stack. After turning off the Master switch and re-electing master for the second switch I have about 40 seconds downtime before Vlan-interfaces become up.

According this documentation I have to have only 3-5 seconds for L3-interfaces.

The newly elected stack master begins accepting Layer 2 traffic in less than 1 second and Layer 3 traffic between 3 to 5 seconds.

Could you suggest what the problem might be?

 Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 28 WS-C3750G-24TS-1U 12.2(55)SE12 C3750-IPSERVICESK9-M
2 28 WS-C3750G-24TS-1U 12.2(55)SE12 C3750-IPSERVICESK9-M

[marce1000 · Accepted solution]

 - If applicable to your case , then take note of the resolving reply of this thread :

               https://community.cisco.com/t5/switching/switch-stack-takes-30-seconds-to-come-up/td-p/1422164

 M.

[Leo Laohoo]

WTF.  Did you pull the power immediately after Switch 1 came online?