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Cisco Bug: CSCus71290 - DHCP failover pair stuck in communication-interrupted state

Last Modified

Feb 15, 2018

Products (1)

  • Cisco Network Registrar

Known Affected Releases


Description (partial)

DHCP failover pair stuck in communication-interrupted state.

The main server repeatedly connects to the backup, but the backup disallows the connection because it has not yet finished cleaning up fully from the previous connection.

This only impacts 8.2 with the move from UDP to TCP for failover communication. This can occur whenever the failover connection is dropped if the server is attempting to send a new binding update at that time (small timing window).
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