[afnog] Problem with DHCP Relay on Cisco 3725 Router

Raymond Macharia raymond at accesskenya.com
Fri Oct 12 08:59:46 UTC 2007


hello Hosea,
please send a snap shot of your running config on the router. this way 
we can see the complete picture. Remember to remove all user names and 
passwords. you can also change the IPs to some RFC1918 ones to keep 
anonymity.

Regards

Raymond

Hosea Phiri wrote:
> Hi All,
>
> I have configured the Cisco router to relay the DHCP requests to DHCP 
> server which is sitting on different network from the targetted 
> clients. Clients who are on the same network (192.168.3.0/24) as DHCP 
> Server are being assigned IP addresses without problems while those on 
> the other network (192.168.30.0/24) are unable to get IP addresses. I 
> am not sure where I am missing it. Here is a sketch of the setup:
>
>
> DHCP Server---------------------(eth0)-Cisco 
> Router-(eth1)-------------------DHCP Client
> 192.168.3.20 -----------------192.168.3.1(  Router 
> )192.168.30.1-------------192.168.30.x        
> (192.168.3.0/24)------------------------------------------------------------------(192.168.30.0/24)
>
> On DHCP Server two address pools are created: 
> 192.168.3.70-192.168.3.120 (for one network) and 
> 192.168.30.70-192.168.30.120 (for other network). 
>
> Let me know what I am missing to have this operational. Here is my 
> interface config.
>
>
> interface ethernet1
>
>  ip address 192.168.30.1
>
>    ip helper-address 192.168.3.20
>
> Hosea
> -------
>
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