[afnog] Problem with DHCP Relay on Cisco 3725 Router

[Hosea Phiri]

Raymond,

I hope I will not restrict your help if I only provide problem related entries from the router.

No global entries were entered during configuration, I will therefore provide only Interface related entries. 

!
!
interface Ethernet0
 ip address 192.168.3.1 255.255.255.0
 ip nbar protocol-discovery
 ip virtual-reassembly
 duplex auto
 speed auto
!
!
interface Ethernet1
 ip address 192.168.30.1 255.255.255.0
 ip address 192.168.30.65 255.255.255.0 secondary
 ip helper-address 192.168.3.20
 duplex auto
 speed auto
!
!

Remember DHCP server is sitting on eth0 and targeted clients on eth1. Just to add more detail. If I assign static IP addresses to .30.0/24 network with gateway either 30.65 or 30.1 things work. Once I switch to DHCP,  pc's can't be assigned IP addresses automatically and the plan is to use DHCP.

Is there anything you are suspecting? Let me know if my detail is insufficient.

Regards,

Hosea
-------


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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