Cisco Bug: CSCus71290 - DHCP failover pair stuck in communication-interrupted state
Feb 15, 2018
- Cisco Network Registrar
Known Affected Releases
Symptom: 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. Conditions: 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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