DHCP Snooping Issue

Dear All,

I am facing problem in my network is that i am getting DHCP snooping Deny log
messages continue in my switches. I knows that how dhcp snooping is working but
i do not knows why this is appearing in the switch, when there is no dhcp
server connected that ports and every thing is working fine.

%SW_DAI-4-DHCP_SNOOPING_DENY: 1 Invalid ARPs (Req) on Gi2/18, vlan
20.([0022.5ac1.202a/10.1.1.1/0000.0000.0000/10.0.176.16/17:38:05 AST Sun Jun 12
2011])

1. Is this because of Virus. that cause the machine to generate this error. I
saw this problem before there was a virus.
2. I dont knows about the servers may be some services is running inside the
server that cause the server to generate this request Or some thing else

Note some there is no virus on the machine and still this error is occur on the
machine... I really do not Why this happening and how i fix this issue.

Currently I am getting this message and there is no issue with the Machine it
self

Port configuration

interface GigabitEthernet2/9

 switchport
 switchport access vlan 19
 switchport mode access
 switchport voice vlan 16
 ip arp inspection limit rate 128
 no ip address
 spanning-tree portfast
 spanning-tree bpduguard enable
end
!
ip dhcp snooping
ip dhcp snooping vlan 19,16
!

kindly advise

Take care

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Received on Sun Jun 12 2011 - 11:01:37 ART