[cisco-voip] Wired ipphone dhcp problem , it answer DHCP request but is not geeting ip address!

[Mike King]

You might have to do a packet capture on the phone side of things.

>From the server side, you have all parts of the conversation.

Client Broadcasts DISCOVER
Server Broadcasts OFFER
Client Sends REQUEST
Server sends ACK

So the client "should" have an IP address.  A capture from the client side
will show if any of this conversation didn't happen on the other side.

Mike

On Sat, Apr 3, 2010 at 3:20 AM, jeremy co <jeremy.cool14 at gmail.com> wrote:

> Hi,
>
> I faced a very wired dhcp problem.  I set up a router as dhcp server on
> subinterface. interface connected to switch and configured as a trunk.
>
>
> I can see from debug that dhcp packets are exchanging between router and
> ipphone
>
>
>
> *Mar  2 03:14:01.547: DHCPD: DHCPDISCOVER received from client
> 0100.059b.f19c.4f on interface FastEthernet0/0.500.
> *Mar  2 03:14:01.547: DHCPD: Sending DHCPOFFER to client 0100.059b.f19c.4f
> (200.0.0.1).
> *Mar  2 03:14:01.551: DHCPD: broadcasting BOOTREPLY to client
> 0005.9bf1.9c4f.
> *Mar  2 03:14:01.555: DHCPD: DHCPREQUEST received from client
> 0100.059b.f19c.4f.
> *Mar  2 03:14:01.555: DHCPD: No default domain to append - abort update
> *Mar  2 03:14:01.555: DHCPD: Sending DHCPACK to client 0100.059b.f19c.4f
> (200.0.0.1).
> *Mar  2 03:14:01.559: DHCPD: broadcasting BOOTREPLY to client
> 0005.9bf1.9c4f.
>
>
> However I can see these 8 lines repeating every 3 seconds. Phone shows dhcp
> server 255.255.255.255
>
>
> factory reset didn't help.
>
> Anybody face this before?
>
>
>
>
> Cheers,
>
> Jereny
>
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