CARP Cluster - LACP - VLAN

  • Hi

    I've just set up two CARP clusters.

    First cluster's two nodes have 3 interfaces (internal, external and carp_sync). carp_sync is a direct connection between two hardware NICs, no switch in between. internal and external each consist of two NICs configured with LAG/LACP. This cluster does run well, Master & Backup shows up in the two web interfaces. Failovertest was great, no issues.

    Second cluster is more or less identical, except that the internal LAG/LACP interface does not serve one network, but 3 VLANs. So I configured all the VLANs on both cluster nodes, also the virtual IPs per VLAN and activated the clustering. Only problem: Both nodes show up as "Master"…

    Could it be that this has something todo with the VLANs? I mean,...are VLANs supported in such a configuration at any rate? I've never done this before,...


  • Ok,…Interface Order was different on the two nodes, so the Virtual IP Synchronization was incorrect, and so it didn't work at all,...same order on both nodes, everything fine.

Log in to reply