proxyDHCP

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>Date: Mon, 06 Mar 2006 01:27:29 -0800
>From: Amresh Prasad <amresh.prasadSun.COM>
>Subject: proxyDHCP
>To: dhcp-serverisc.org
>
>Hi,
>
>I am looking to find out if the ISC DHCP server can be
run in proxyDHCP 
>mode - essentially providing PXE boot information,but
not the actual IP.
>
>I was able to find similar queries in the archives,
unfortunately with 
>no replies.
>
>The reason I need to do this is to support network-based
OS installation 
>(DHCP driven) while having IP address allocation done by
an 
>enterprise-wide DHCP server.
>
>The simplistic method of just skipping the IP in the
host lease, leads 
>to a "no free leases" message in the syslog.
>
>Thanks,
>-Amresh

Hi Amresh,

Have a look at dhcrelay, which is a relay agent for DHCP and
part of
the ISC dhcpd package.

Most routers, and a lot of switches, also provide dhcp relay
functionality. For example in Cisco switches and routers it
is called
"ip helper".

regards,
-glenn


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Glenn Satchell wrote:

>  >I am looking to find out if the ISC DHCP server
can be run in proxyDHCP
>>mode - essentially providing PXE boot
information,but not the actual IP.
>>
>>I was able to find similar queries in the archives,
unfortunately with
>>no replies.
>>
>>The reason I need to do this is to support
network-based OS installation
>>(DHCP driven) while having IP address allocation
done by an
>>enterprise-wide DHCP server.
>>
>>The simplistic method of just skipping the IP in the
host lease, leads
>  >to a "no free leases" message in the
syslog.


>Hi Amresh,
>
>Have a look at dhcrelay, which is a relay agent for DHCP
and part of
>the ISC dhcpd package.
>
>Most routers, and a lot of switches, also provide dhcp
relay
>functionality. For example in Cisco switches and routers
it is called
>"ip helper".

I don't think that is what Amresh is looking for. As I read
it, what 
he wants is to be able to run a 'dhcp server' that he can
configure 
to provide all the options he needs etc, but which obtains
the actual 
client address from an upstream server.

I know that the bootp relay in Cisco kit doesn't have that 
flexibility, I don't think dhcrelay does either.

Simon

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