[c-nsp] Problem with IP Helper (DHCP) on 1811

[Bruce Pinsky]

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Skeeve Stevens wrote:
> Hey guys.
> 
> Got a DHCP Problem
> 
> 1. Discover comes into 1811
> 
> *Aug 24 15:01:11.919: DHCPD: Sending notification of DISCOVER:
> *Aug 24 15:01:11.919:   DHCPD: htype 1 chaddr 0004.e245.f1a1
> *Aug 24 15:01:11.919:   DHCPD: remote id 020a0000d238e801060000c8
> *Aug 24 15:01:11.919:   DHCPD: circuit id 00000000
> 
> 2. Linux box gets it, and makes an offer
> 
> Aug 25 01:01:30 newton dhcpd: DHCPDISCOVER from 00:04:e2:45:f1:a1 via
> x.x.232.1
> Aug 25 01:01:30 newton dhcpd: DHCPOFFER on x.x.232.50 to 00:04:e2:45:f1:a1
> via x.x.232.1
> 
> And.. That's it.  Cisco 1811 doesn't see the offer and relay it back to the
> DHCP client.
> 
> Just keeps trying over and over and over again.
> 
> Cisco config..
> 
> version 12.4
> ip dhcp relay information option
> ip dhcp relay information policy keep
> ip dhcp relay information trust-all
> interface Vlan200
>  ip address x.x.232.1 255.255.254.0
>  ip helper-address x.x.224.130
> 
> Anything I am missing?
> 
> Debugging not showing anything else but the DISCOVERS..
> 
> 1811#show debugging 
> DHCP server event debugging is on.
> DHCP server linkage debugging is on.
> DHCP server class debugging is on.
> 
> Thanks all to those who help.. And for helping previously with my initial
> email last week.
> 

Basic DHCP relay agent functionality is enabled via the helper address
command.  Is there a reason you need the "ip dhcp relay information" commands?

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bep

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