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Christian_Manue's avatar
Christian_Manue
Icon for Nimbostratus rankNimbostratus
Feb 19, 2017

Issue with Virtual Servers in HA Deployment

Hi Community, We have two BIG-IP 4000 appliance in HA Deployment (Active/StandBy).

 

When the firs F5 is active, all the Virtual Servers works fine but when the other F5 becomes to be active, some Virtual Servers dont work. We tried 03 VS and one of these work and the other two not.

 

The weird here is that some VS works and others do not.

 

Has anyone passed these? Any recommendations for analysis?

 

Many Thanks

 

application delivery
BIG-IP
ha

7 Replies

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  • JG's avatar
    JG
    Icon for Cumulonimbus rankCumulonimbus
    Feb 19, 2017

    Which BIG-IP version are you running?

     

  • crodriguez's avatar
    crodriguez
    Ret. Employee
    Feb 20, 2017

    A couple of things come to mind - they're pretty simple but often the culprits:

     

    1. Is the one VS that works using SNAT while the others are not? It could be that your back end servers are not configured to use BIG-IP as their default gateway.
    2. If your back end servers are configured to use BIG-IP as their default gateway, check to make sure the default gateway configuration is using one of the BIG-IP systems' floating self IP addresses, rather than a static (non-floating) self IP address.
  • JG's avatar
    JG
    Icon for Cumulonimbus rankCumulonimbus
    Feb 20, 2017

    Are the pools marked as up on both F5 devices?

     

  • JG's avatar
    JG
    Icon for Cumulonimbus rankCumulonimbus
    Feb 20, 2017

    After failover, run "bigtop" on the standby device to see if there are any client connections that still end up there.

     

  • nathe's avatar
    nathe
    Icon for Cirrocumulus rankCirrocumulus
    Feb 20, 2017

    have you run a packet capture (tcpdump) to see what is happening at the network layer? Are you using MAC masquerading on the traffic group?