General HA troubleshooting steps are below:

  • Check that the IP settings for the Interface, Partner, and Shared IP address are correct. These settings can be found in System Configuration > Interfaces.
  • A shared IP address must be added to all production interfaces.
  • The Use for HA checks option must be enabled on all production interfaces.
  • Log in to each of the single HA interface addresses and ensure the HA parameters are correct (Local Administration > HA Parameters):
    • Ensure that the HA pair has one unit in HA (First) Mode and another unit in HA (Second) Mode.
    • Ensure that both units are on the same protocol and HA ID.
  • Ensure that all of the IP addresses are available and are not in use by another device. IP conflict causes numerous problems.
  • Shut down one or both LoadMasters and try to ping the IP address of each unit. If there is an answer, another device is using that IP address. Try the ‘arp -a’ or ‘netstat’ commands to find out more information on what device that is.
  • Set the HA Virtual ID (in Local Administration > HA Parameters) to something other than 1. The further up the range the better – avoid numbers from 1 to 10 because other HA pairs may have those IDs and use Virtual Router Redundancy Protocol (VRRP).
Note: The Virtual ID can conflict with any device on the network which is using VRRP. If there are multiple HA pairs on the same network, they must also have different Virtual IDs.
  • Check that the time of both units are in sync and if they are not, ensure that NTP is configured and running on both units.
  • Ensure there are no Virtual Services using TCP and port 6973 on the interface where synchronization is configured.
  • Ensure there are no Virtual Services on either of the HA individual addresses.
  • Ensure there are no Virtual Services using TCP and port 22 on a LoadMaster interface port.