About Pvlan ARP entries do not age out!

[ccie11851]

I meet a problem.My switch 6509 , Pvlan arp entries do not age out usually.

interface Vlan10

ip address 10.1.1.1 255.255.255.0

no ip redirects

no ip unreachables

no ip proxy-arp

no ip mroute-cache

load-interval 30

no cdp enable

But ,yesterday i found a server arp attack , My 6509 MSFC all arp entery learned the server MAC.

Can you tell me why?

[pflunkert]

in the moment i would sys that the arp entries don't age out when the switch see every time the adresses. Can you tell me if all arp entries don't age out?

Regards

Peter