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Issue with DHCP using Cisco wireless adsl router, Cisco VPN, Windows server 2008 DHCP

Posted on 2010-09-10
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Last Modified: 2012-05-10
Hi. i have an issue with using DHCP.

My current setup is
Cisco wireless router/adsl all in one, DHCP is disabled. This is then connected to
Cisco VPN Router, also DHCP is disabled. Then that is connected to the Winders server 2008 DHCP Role.
All computers connecting through the lan cable have no problems with accessing server or internet.
All wireless computers cannot find an ip address though.
I have set the adsl IP to 192.168.0.1
the vpn to 192.168.1.1
and the server dhcp is 192.168.1.111

what setting am i doing incorrect that allows wireless access to pickup the dhcp server. I have the
wan cable connected from the vpn router to port 1 on the adsl wireless router.

I have set the vpn to use static internet ip and pointing that to the modem.
on the wireless i have tried to use dhcp relay and pointing that to the vpn 192.168.0.10 is the address
the vpn connects to the adsl

I need dhcp tp go through the server because they are running exchange server 2010.

Thank you
Matt
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Question by:cybertechcomputers
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5 Comments
 
LVL 34

Expert Comment

by:Istvan Kalmar
ID: 33651534
Please show the configs
0
 

Author Comment

by:cybertechcomputers
ID: 33651565
what do you mean by show config, are you after a screen print?

the models are

adsl wireless router, wag120n and the vpn router is
rvo42
0
 
LVL 50

Expert Comment

by:Don Johnston
ID: 33651577
On the wireless router, you will need an "ip helper-address 192.168.1.111" assigned to the wireless interface.
0
 

Author Comment

by:cybertechcomputers
ID: 33651591
where do i find that, even though the wireless router is on a different ip range then the dhcp. wireless router / modem is 192.168.0.1 and the dhcp is 192.168.1.111
0
 

Accepted Solution

by:
cybertechcomputers earned 0 total points
ID: 33651677
I ended up resolving the issue, i connected a switch to both devices, then point the adsl wireless to dhcp relay to the dhcp server. all went fine.

Thank you for you help
Matt
0

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