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Sriram_Kannan_1's avatar
Sriram_Kannan_1
Icon for Nimbostratus rankNimbostratus
Apr 21, 2015

Viprion Traffic Group

Hi

 

We have two viprion chassis at different datacentre in HA. Each chassis is connected to two different switches for redundancy. Each chassis is running three VCMP which is in HA between each other through its respective traffic group

 

we have a separate traffic group for each VCMP HA between two chassis and we are having some issues with traffic group management

 

When one of the redundant link on switch fails, the traffic group failover to the standby before the spanning tree moves the other redundant link on switch from Block to Forward. RSTP takes around 6 sec for this change.

 

only two VCMP is reacting this away, third vcmp's traffic group will not failover during spanning tree calculation

 

VCMP without problem shows below log:

 

HA Connection with peer 192.168.22.2:32768 for traffic-group /Common/traffic-group-1 lost.

 

VCMP with problem shows below log:

 

HA Connection with peer 192.168.22.18:32768 for traffic-group /Common/traffic-group-1 closing.

 

  1. what is the difference between two logs?
  2. Is there an confguration to control the traffic group failover timeout to prevent failover before spanning tree re-convergence.
application delivery
availability
design
LTM
management
traffic group

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  • Sriram_Kannan_1's avatar
    Sriram_Kannan_1
    Icon for Nimbostratus rankNimbostratus
    Apr 21, 2015

    Below are the full message of the log:

     

    ltm 04-18 17:09:03 err slot1/cd1001-xb11 tmm[9744]: HA Connection with peer 192.168.22.2:32768 for traffic-group /Common/traffic-group-1 lost. ltm 04-18 17:09:04 notice slot1/cd1001-xb11 tmm[9744]: HA Connection with peer 192.168.22.2:32768 for traffic-group /Common/traffic-group-1 established.

     

    ltm 04-18 19:10:01 notice slot1/cd1001-xb15 tmm[9664]: HA Connection with peer 192.168.22.18:32768 for traffic-group /Common/traffic-group-1 closing. ltm 04-18 19:10:09 notice slot1/cd1001-xb15 sod[6800]: Standby for traffic group /Common/traffic-group-1. ltm 04-18 19:10:12 notice slot1/cd1001-xb15 tmm[9664]: HA Connection with peer 192.168.22.18:32768 for traffic-group /Common/traffic-group-1 established. ltm 04-18 19:12:57 notice slot1/cd1001-xb15 sod[6800]: Active for traffic group /Common/traffic-group-1. ltm 04-18 19:12:57 notice slot1/cd1001-xb15 sod[6800]: Traffic group /Common/traffic-group-1 received a go high score command.

     

  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Apr 22, 2015

    When one of the redundant link on switch fails, the traffic group failover to the standby before the spanning tree moves the other redundant link on switch from Block to Forward. RSTP takes around 6 sec for this change.

     

    if stp cannot be avoided, you may try to adjust failover.nettimeoutsec db variable.

     

    sol2397: Comparison of hardwired failover and network failover features

     

    https://support.f5.com/kb/en-us/solutions/public/2000/300/sol2397.html