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Cisco Bug: CSCvh82906 - IP Phones not registering after switch reboot

Last Modified

Sep 17, 2019

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)

Randomly few IP Phones stuck in "unregistering" state after a switch reboot with 802.1x enabled. Cisco catalyst 4500 with SU7E and Cat6500 with SUP32, after power cycle quite a few phones doesn't come up and stayed in unregistered state. The only way to recover from this situation was to bounce the port on the switch.

An Interface configured for Voice and Data VLAN with dot1x enabled with host mode: multi-domain
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