Re: DHCP Snooping not working

Hi Farrukh,

What if you trust the access ports? Does that change the outcome? What about
moving on to a newer code?

Is the debug above from the access switch? Whats your topology here please?

Sadiq

On Mon, Jan 18, 2010 at 11:22 AM, Farrukh Haroon <farrukhharoon_at_gmail.com>wrote:

> Dear All
>
> We are facing a weird issue while trying to configure DHCP snooping.
> Users are unable to get/renew IP Addresses after enabling DHCP snooping.
> The DHCP Snooping binding table is always empty.
>
> The configuration is pretty simple
>
> ip dhcp snooping vlan 101,104
> no ip dhcp snooping information option
> ip dhcp snooping
>
> All ports connected to DHCP servers and uplinks set as trusted.
>
> Switch Version: c3560-ipservices-mz.122-35.SE5
>
> I tried the same configuration with another 3560 Switch running an older
> version with no issues at all.
>
> This is the error we see on all the trusted ports, any ideas why this is
> happenning:
>
> Dec 27 08:56:43 KSA: DHCPSNOOP(hlfm_set_if_input): Setting if_input to
> Gi0/49 fo
> r pak. Was not set
> Dec 27 08:56:43 KSA: DHCPSNOOP(hlfm_set_if_input): *Clearing if_input for
> pak. W
> as Gi0/49*
> Dec 27 08:56:43 KSA: DHCPSNOOP(hlfm_set_if_input):* Setting if_input to
> Gi0/49 fo
> r pak. Was not set*
>
> Regards
>
> Farrukh
>
>
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