Subject: [dhcwg] Re: DHCPv6 Relay Queries.

From: "O.L.N.Rao" <[email-masked]>
Date: Wed, 25 Aug 2004 14:24:51 +0530

Hi Surya,

    See my comments inline :)

    [PS: This is related to DHCPv6 and would be better to discuss in
[email-masked]]

Regards,
O. L. N. Rao & Suman V N

----- Original Message ----- 
From: "Surya" <[email-masked]>
To: <[email-masked]>
Sent: Wednesday, August 25, 2004 12:30 PM
Subject: DHCPv6 Relay Queries.

> Hi,
>
> Could you please clarify on the below mentioned queries on DHCPv6 Relay
>
> When we use the following topology
>
> "Client ----- Relay1 -------Relay 2 ---------Server"
>
> 1)  Does all the DHCP messages from Client goes to Relay even after
knowing
> the server?

==> Yes, they always go to/through Relay. However, if the DHCPv6 client
supports
"Server Unicast Option", then DHCPv6 Server will send its unicast address to
DHCPv6 Client.
DHCPv6 Client will then use unicast communication with server.  Here, I
would like to mention
one more point.  Even though, the messages are sent to
DHCPv6_All_Agents_and_Servers the
Server Identifier option specifies the DHCPv6 server to which the message
was intended.

>
> 2. Relay forms Relay forward message when it sends to another relay, will
it
> again construct a relay forward message?

===> Yes.  Because, unless the total path is known,  the reply can not come
back in the same path.
The server constructs the Relay-Reply message with the full path in Relay
Message Options.

>
> 3. DHCP message can be can be stored in Options field of the Relay
forward.
> When it reaches the last relay on the network which is connected to
Server,
> how the processing should be?
>

===> The Relay-Forward messages reaches Server as it is.

>
> Thanks
> Surya.
>
>
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