Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    CARP failover events triggered for no obvious

    Scheduled Pinned Locked Moved HA/CARP/VIPs
    3 Posts 2 Posters 559 Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • M
      mwsz
      last edited by

      Hi,

      I have a problem with a SG-8860 1U in a CARP-Cluster with another SG8860 1U.

      The CARP-Status of the Interfaces changes from one moment to another resulting in a brief network timeout of 1 to 3 pings for no obvious reason. Both Pfsense or up and working, but they change the role of master and member (Carp events are visible in the Logfile) on random interfaces. The change of master and member does not include all interfaces at the same time but only some, resulting in a "split brain" situation where the active Pfsense has some CARP-Interfaces as master and the passiv Pfsense has also some of the CARP-Interfaces as master.

      The state of changing from master to member would happen in less than 5 seconds and then the changes are "rolled back" so the active one would get the CARP-Interfaces back as "master". This event will happen round about two or three times a minute.

      If you have fourther questions please let me know.

      1 Reply Last reply Reply Quote 0
      • DerelictD
        Derelict LAYER 8 Netgate
        last edited by Derelict

        Almost certainly an interruption at Layer 2. Packet capture for CARP on both nodes on an interface that malfunctions.

        Compare the heartbeats sent by the MASTER node against those received by the BACKUP node right before the BACKUP assumes MASTER.

        Chattanooga, Tennessee, USA
        A comprehensive network diagram is worth 10,000 words and 15 conference calls.
        DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
        Do Not Chat For Help! NO_WAN_EGRESS(TM)

        1 Reply Last reply Reply Quote 0
        • M
          mwsz
          last edited by

          @Derelict said in CARP failover events triggered for no obvious:

          those
          Hallo,

          thanks for your reply.

          I have some layer 2 errors on the switch (spanning-tree). I will try to fix the errors and provide feedback as soon as possible, but I only have "downtime" at Friday to test my configs.

          Thanks for your help.

          1 Reply Last reply Reply Quote 0
          • First post
            Last post
          Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.