Cisco 8821 taking long time to get DHCP IP

[Nishad Ismail]

Hi All,

Cisco 8821 is taking long time to register because the DHCP IP taking longer time .When configured manual IP it registering  immediately ,

This is specifically for this Model of Phone(8821) ,All other model of Cisco  IP phones are getting IP quickly.

CUCM: 11.5.1.13902-2

Cisco Phone Firmware : 11-0-5SR1-4(latest)

[Agent_007]

What version is running on the Wireless LAN Controller (WLC)?

[Cevollrath]

My 8821’s fail to acquire IP address through dhcp and do not retry until power cycled. Firmware 8821.11-0- 3sr6-15