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js_168189's avatar
js_168189
Icon for Nimbostratus rankNimbostratus
Jan 13, 2016

address conflict

I have a problem whenever I make changes to my active F5 LTM one VIP goes down. Logs on both active and standby unit show an address conflict for this VIP. The MAC address in the ARP conflict log message belongs to the F5s. show run config | grep the address only shows the address configured in the destination of the VIP any ideas on how to tshoot this?

 

Adding to this I added a route domain totally unrelated to this VIP. The VIP went down and address conflict appeared in logs. Deleted the route domain and the VIP came back. The route domain was brand new with nothing configured and the VLAN in the route domain was new with nothing configured to it.

 

application delivery
LTM

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  • Stanislas_Piro2's avatar
    Stanislas_Piro2
    Icon for Cumulonimbus rankCumulonimbus
    Jan 13, 2016

    Hi,

     

    Which F5 The MAC address belongs? Active or Standby?

     

    is the Virtual server IP address configured in another object? (self IP, SNAT, ...)

     

    Stanislas

     

  • js_168189's avatar
    js_168189
    Icon for Nimbostratus rankNimbostratus
    Jan 13, 2016

    Last week we had a self IP conflicting with this VIP. That was changed and we thought we had the issue resolved. Show run config only shows the destination address of the VIP on both f5s. During the problem the MAC address in the arp message is learned on the switch port facing the standby f5 when things are normal it is learned on the switch port facing the active unit. Thanks for the help

     

  • js_168189's avatar
    js_168189
    Icon for Nimbostratus rankNimbostratus
    Jan 13, 2016

    Last week we had a self IP conflicting with this VIP. That was changed and we thought we had the issue resolved. Show run config only shows the destination address of the VIP on both f5s. During the problem the MAC address in the arp message is learned on the switch port facing the standby f5 when things are normal it is learned on the switch port facing the active unit. Thanks for the help

     

  • js_168189's avatar
    js_168189
    Icon for Nimbostratus rankNimbostratus
    Jan 13, 2016

    Last week we had a self IP conflicting with this VIP. That was changed and we thought we had the issue resolved. Show run config only shows the destination address of the VIP on both f5s. During the problem the MAC address in the arp message is learned on the switch port facing the standby f5 when things are normal it is learned on the switch port facing the active unit. Thanks for the help

     

  • js_168189's avatar
    js_168189
    Icon for Nimbostratus rankNimbostratus
    Jan 13, 2016

    Last week we had a self IP conflicting with this VIP. That was changed and we thought we had the issue resolved. Show run config only shows the destination address of the VIP on both f5s. During the problem the MAC address in the arp message is learned on the switch port facing the standby f5 when things are normal it is learned on the switch port facing the active unit. Thanks for the help

     

  • js_168189's avatar
    js_168189
    Icon for Nimbostratus rankNimbostratus
    Jan 13, 2016

    yes they are using auto synch and currently in synch with no errors.