Overview

This article aims to solve the problem when virtual IP addresses on both HUBs are the same. The VIP address shouldn't be active on both HUBs at the same time.

Solution

The failover control module on the HUB on standby monitors the active HUB’s heartbeat and claims the virtual IP address in case of heartbeat loss, notifying the other network nodes by sending out an ARP (a broadcast message that ties the IP address to the MAC address of its Ethernet interface).

1. Restart one of the HUBs with the following commands and check the status 

          $tp_stop --tp_hub

          $tp_start --tp_hub

     2. Review the below settings:

        a. The HUB Failover control is enabled via SNMP and can be configured by setting the HUB parameters hubipfailovercontrol and hubipfailovertimeout in the common_config.txt configuration file located in the /usr/TextPass/etc directory.

         b. The common IP address is configured via the tp_ip_config.txt file located in the /usr/TextPass/etc directory.

Testing:

The Virtual IP address on both HUBs should not be the same.