Unable to ping gateway with bonded NIC's on cluster node on Red Hat Enterprise Linux 6

Solution Unverified - Updated 2014-06-17T13:51:38+00:00 -

Issue

Unable to ping gateway with bonded NIC's on node
We have two servers which are in cluster. I can login remotely from node1 to node2 but i can not even ping from ftp2b to ftp1a and even gateway also. Before the node used to failover without any trouble.

Red Hat Enterprise Linux (RHEL); including
- Red Hat Enterprise Linux Server 5 (with the High Availability or Resilient Storage Add Ons)
- Red Hat Enterprise Linux Server 6 (with the High Availability and Resilient Storage Add Ons)
Red Hat High Availability cluster with 2 or more nodes.
One of the nodes is unable to ping the other node or the gateway.
- Network is configured using active-backup (mode1) network bonding.
- The issue persists through reboots.

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