R: R: Relay agent with dhcp server on same subnet

Autuori Gianluigi Autuori.Gianluigi.Wintime at ansaldobreda.it
Wed Nov 18 20:23:58 UTC 2009

I try to attach a capture made with wireshark.
I think server nakew client request because there isn't any agent.circuit-id field in its packet.

Gianluigi Autuori

-----Messaggio originale-----
Da: dhcp-users-bounces at lists.isc.org [mailto:dhcp-users-bounces at lists.isc.org] Per conto di Bruce Hudson
Inviato: mercoledì 18 novembre 2009 17.44
A: dhcp-users at lists.isc.org
Oggetto: Re: R: Relay agent with dhcp server on same subnet

> Ok, but after packet 6  the client starts a new transaction...

    That depends on what you consider a transaction. A completely new transaction would start with a new DISCOVER packet, not a second REQUEST packet. The basic packet flow data will only tell you so much.
You probably need to look at the logs from the server to see what the client is asking for and why the server NAKed it. You can sniff more details as Glenn sugested but nothing beats the server's point of view in my opinion.
Bruce A. Hudson				| Bruce.Hudson at Dal.CA
ITS, Networks and Systems		|
Dalhousie University			|
Halifax, Nova Scotia, Canada		| (902) 494-3405
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