I doubt its a bug, but you can check the bugtool. Are these two Siemens IP-Phones running some other newer/older software? Do they have a fallback mode if they dont get an IP via DHCP they default to and IP, that just happens to be same range that you are providing? Have you tried factory reset on them etc?
Regards Roger On Wed, Oct 6, 2010 at 7:12 PM, Arne Larsen / Region Nordjylland <[email protected]> wrote: > Hi All. > > I know this might be a bit of topic, but anyhow > I have dhcp problems with Siemens IP-phone endpoints under Cisco ws-c3750. > It's quite odd, the problem only happens between two Siemens phones. > Sometimes when an en endpoint tries to get an ip address via dhcp, an other > answer on behalf. > The flow is like this. > Endpoint send an discover, the server sends an offer via the relay agent. > The endpoint sends an request and the server ack's. > After this the endpoint sends an gratuitous arp on the requested address, and > then an other answers that it has the ip address. > I've pulled out the arp table before enabling a new endpoint to get the ip > address list on the switch. > But after the decline I can't find the mac address in the arp table that I > pull out before activating the new endpoint. > If I use a laptop or an other vendors ip phone I don't se the problem > Does anyone know off a similar problem, is there a known bug on Cisco > ws-c3750 with software release 12.2(25r)SEE3. > I know that everyone will point towards the Siemens phones, and I'm doing > that myself but I just what to be sure that I haven't missed something. > > /Arne > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
