[cisco-voip] 7970 won't release IP address

[Mike Armstrong]

We had a similar problem with a 7935 conference phone.  TAC eventually 
replaced the phone (Case 601395891).

Mike Armstrong
UF/IFAS CREC
Lake Alfred, FL

> Date: Wed, 03 Aug 2005 15:44:57 -0400
> From: Candace Holman <candace_holman at harvard.edu>
> Subject: [cisco-voip] 7970 won't release IP address
> To: cisco-voip at puck.nether.net
> Message-ID: <42F11EB9.4060900 at harvard.edu>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> I happened to reassign a dynamic DHCP address from our voice vlan to a
> static device, but neglected to immediately change the DHCP
> availability.  I tried to use the "release address" option on a 7970 so
> that it would get a new address, and it just would not  release the
> dynamically obtained IP address.  I notice similar behavior on a 7960 -
> it will not get a new IP address even when I ask it to release the
> previously held IP address.  On the 7970, I even hard-coded a different
> ip address, and it worked, but when I re-enabled DHCP it picked up the
> old, undesirable IP address!
>
> Is this more likely a bug in the DHCP service (Cisco NetRegistrar), or a
> phone firmware bug?
>
> Candace