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Cisco Bug: CSCsz02849 - Long delay before standby becomes active if unit holdtime misconfigured

Last Modified

Nov 08, 2016

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases


Description (partial)

If the active unit in a failover pair of firewalls crashes or is powered off, the standby unit might not take the active role for up to 5 minutes. This might cause a traffic outage through the network during this time.

The following conditions must be true to hit this bug:
1) The firewalls must be configured for failover. Issue the command 'show failover' to determine if the firewall is configured for failover
2) The unit holdtime on the firewall is greater than the configured interface holdtime. To determine if this is the case, issue the command 'show run all fail'. In the example below, the unit holdtime is 15 seconds, while the interface holdtime is 5 seconds:

ASA(config)# sh run all fail
failover lan unit primary
failover lan interface failoverinterface GigabitEthernet0/2
failover polltime unit 1 holdtime 15
failover polltime interface msec 500 holdtime 5
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