From: Jung, Jin (jin.jung@lmco.com)
Date: Thu May 22 2003 - 11:15:04 GMT-3
I am bit confused with this config,, so let me see if I can make some sense.
Normally,
You will need to do "helper-address" command on the remote/client side. Not
on the DHCP server network.
I see that you have helper-address configured on the same network as DHCP
server.
And I believe that "smart-relay" also needed to be on the relay agent, not
on the DHCP network.
And you said that when you change IP address to 3.0 network, it work, this
tells me that your relay-agent is not working.
I have not done this a while, so I may have miss something, but go ahead
check you relay-agent setup again.
Jin jung...
-----Original Message-----
From: Charles Church [mailto:cchurch@wamnet.com]
Sent: Thursday, May 22, 2003 7:58 AM
To: Hale, Wendy; ccielab@groupstudy.com
Subject: RE: DHCP and secondary addresses
I think this problem could also be fixed by using a 'super scope' on the
server. Haven't done it in a while, but I think it handles secondary
addresses nicely. HTH.
Chuck Church
CCIE #8776, MCNE, MCSE
Wam!Net Government Services
13665 Dulles Technology Dr. Ste 250
Herndon, VA 20171
Office: 703-480-2569
Cell: 585-233-2706
cchurch@wamnet.com
PGP key: http://pgp.mit.edu:11371/pks/lookup?search=chuck+church&op=index
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of Hale,
Wendy
Sent: Thursday, May 22, 2003 1:41 AM
To: 'ccielab@groupstudy.com'
Subject: DHCP and secondary addresses
I have an ethernet address with a primary address in the 192.168.2.0/24
subnet and a secondary address in the 192.168.3.0/24 subnet.
The Windows 2000 DHCP server has a scope for the 192.168.3.0 subnet, but the
DHCP server itself has an address in the 192.168.2.0 subnet.
I can ping the DHCP server from the secondary address on the router.
I tried using the smart-relay command and debug showed that the router is
indeed forwarding the DHCP request to the DHCP server with a giaddr of
192.168.3.1. However, the DHCP server is returning an answer which the
router says has an invalid XID not_for_us.
When I change the ip address of the DHCP server to 192.168.3.2, it works
fine.
What do I need to do to get the secondary address to work with DHCP?
interface e0
ip address 192.168.2.1 255.255.255.0
ip address 192.168.3.1 255.255.255.0 sec
ip helper-address 192.168.2.102
!
ip dhcp smart-relay
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