Re: [dhcwg] Query on DHCP client with multiple host

"Bhaskar S" <Bhaskar.S@motorola.com> Sat, 07 September 2002 11:08 UTC

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From: Bhaskar S <Bhaskar.S@motorola.com>
To: dhcwg@ietf.org
References: <20020905153353.62997.qmail@web13903.mail.yahoo.com>
Subject: Re: [dhcwg] Query on DHCP client with multiple host
Date: Thu, 05 Sep 2002 10:59:18 -0700
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Hi Ryan,

Thanks for the info.

I would like to seek more clarification on using DHCP along with VLAN. Here
I mean to say that I have to use DHCP to allocate IP addresses to each of
the VLAN interfaces, assuming that DHCP server is connected to one of the
VLAN interfaces. Is this possible?

It seemed difficult to me because the DHCP requesting IP address for an
interface would be sent only on that interface?

Thanks in advance.

Regards,
Bhaskar S.

Regardomg
----- Original Message -----
From: "Ryan Scripps"
To: "Bhaskar S"
Sent: Thursday, September 05, 2002 8:33 AM
Subject: Re: [dhcwg] Query on DHCP client with multiple host


> My interpretation is that a DISCOVER must be sent from
> each interface since they could each be on a different
> network.
>
> VLANs do not alter the functionality of DHCP.  You
> must ensure that each VLAN has a DHCP server or relay
> agent in it somewhere, however.  Clients on one VLAN
> typically must route to another VLAN, therefore DHCP
> DISCOVERs will not be carried across VLANs.  Your
> switches may allow a single port to trunk VLANs to a
> single host which could have interfaces for all
> available VLANs.
>
> Best of luck,
> Ryan Scripps
>
> --- Bhaskar S wrote:
> > Hi,
> >
> > The DHCP RFC says:
> >
> > "A client with multiple network interfaces must use
> > DHCP through each
> > interface independently to obtain configuration
> > information parameters for
> > these seperate interfaces."
> >
> > Does the above statement mean that DISCOVER message
> > for getting IP
> > address for a particular interface should be sent
> > only on that interface or
> > does it mean that the DISCOVER message has to be
> > sent on each of
> > the interfaces available on the node ?
> >
> > Also I would like links which would give how to
> > configure DHCP in a VLAN
> > environment.
> >
> > Thanks in advance.
> >
> > Regards,
> > Bhaskar S.
> >
> >
>
>
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