DHCP Snooping not working

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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Received on Mon Jan 18 2010 - 14:22:13 ART