ARP inspection Logs

[Azeem Dawood]

Hi,

I have configured ARP inspection along with DHCP snooping.

All the computers are getting the IPs properly and building the snooping database. but once I disable and enable the network adapter, it starts discovering for IP address, in that process ARP inspection shows log in the switch says invalid ARP (Req) on the port with MAC address of the system and Microsoft Automatic IP even after IP address and the port number entry in the snooping database .

My cisco Model is 3560 and IOS ver is 15.0 (2) SE6

Any suggestions what is the issue.

Regards,

Azeem

[Bekzod Fakhriddinov]

looks like we have similar issue . after i deployed DAI and DHCP snooping whole bunch of users lost they ip , dhcp server keep their ip , PCs can't get IP . Could you figure out what was the problem ? 

[Azeem Dawood]

Hi Bekzod,

have you disabled insertion of option-82

if not then type in your switch this command:-

no ip dhcp snooping information option

Can you post your configuration you have done for DHCP snooping.