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nov1ce_120072's avatar
nov1ce_120072
Icon for Nimbostratus rankNimbostratus
Apr 23, 2014

Active/standby question

Hello,   We have a pair of BIG-IP LTM 3900 appliances (10.2.2 build 763.3) configured in active/standby mode. Floating IP is on. On the active unit: System > High Availability > Network Failover i...
  • nitass_89166's avatar
    Apr 23, 2014

    yes, it is connection mirroring.

    sol13478: Overview of connection and persistence mirroring (11.x)

    http://support.f5.com/kb/en-us/solutions/public/13000/400/sol13478.html

    when using connection mirror, ingress traffic can be seen on standby unit.

    Packets on the active BIG-IP that require mirroring are transmitted to the standby unit. The standby unit then processes the traffic through the inbound side of the TCP stack and hands it off to TMM as if it were the active unit. However, the output stack is disconnected, and no trafffic is actually sent on the wire. This process allows the standby unit to maintain full state information for the mirrored connections in order to fail over seamlessly.
    

    sol9701: The tcpdump utility with a VLAN filter on the standby unit may capture load-balanced traffic

    http://support.f5.com/kb/en-us/solutions/public/9000/700/sol9701.html