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Cisco Bug: CSCuj83637 - WLC HA: service port with DHCP address loses connectivity after failover

Last Modified

Nov 15, 2018

Products (1)

  • Cisco 5500 Series Wireless Controllers

Known Affected Releases

7.4(110.0) 7.5(102.0)

Description (partial)

Symptom:
Following an HA failover the service port on the active WLC configured to get its IP address via DHCP will lose connectivity after the DHCP lease expires (or the DHCP renew is forced via "config interface dhcp service-port disable/enable).
In case of WiSM2 this connectivity issue would cause the WLC and Cat6k to fail to exchange WCP keepalives, so the "show wism status" would show the active module as oper-down.

Conditions:
* WLC or WiSM2 running 7.4.110.x or 7.5.102.x code in HA
* the service-port is configured for DHCP
* the problem is seen after the following events happen in the specified order:
   - HA failover
   - serivce port DHCP lease expiration
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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