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7921 will not pick up an IP address

ppellettiere
Level 1
Level 1

I just recieved new 7921 phones. I cannot get them to pick up a dhcp address

I keep getting DHCP "Timeout's"  and " Configuring IP" .

The ould 7921's and the new 7925's work just fine. I have tried removing and

reconfiguring the WLAN and Interface on the Controllers. I even removed and reconfigured

the DHCP scope in Infoblox. I am at a lost. Any ideas?

3 Replies 3

mnorwood
Level 1
Level 1

Excuse the basic questions, but have you ensured there are free addresses in the DHCP scope? Are the other working 7921/5's in the same WLAN? If this is a new WLAN, are "ip helpers" setup on the L3 interface sitting on the switch/router if your Infoblox appliance is in another subnet?

Matthew

Sent from Cisco Technical Support iPad App

Justin Kurynny
Level 4
Level 4

ppellettiere,

Try resetting your phone to factory defaults.

Alternatively, browse to the phone's WLAN settings and you will find an option to "release dhcp." Set this option to 'yes' and exit/save changes. (recalling from memory; these may not be the exact steps.)

I've noticed address stickiness with dhcp config in the 7921 before.

Justin

... typd on tny kybrd

Thanks for the information. However, When I updated the code to 1.4.2 the phone came up.

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