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ARP insepection issue

Question asked by Bechara.abouraha on Dec 15, 2015



We have the following Scenario,


we have 1 DHCP server, 1 AV server, and 1 client PC.


under DHCP interface we set the below.

interface FastEthernet0/1

ip arp inspection trust

ip dhcp snooping trust


under the Client PC we set the below

switchport mode access

ip arp inspection limit rate 100


under AV, nothing set.


when we push the AV agent we start getting ARP inspection errors from the agent, asking for the MAC of the AV server.


however if we trusted the AV server port for arp, problem will be solved.


can someone help me understand this behavior, why do we need to trust AV port.