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6509 multiple arp entries for clients

6509 with two MSFC’s has multiple arp entries for clients in one MSFC but not in the other MSFC. But not every client has multiple IP addresses mostly clients on VLAN 745. Both DHCP pools and interfaces are configured exactly the same in the 6509

Here is an example of a MAC address…notice MSFC_1 has one arp entry and MSFC_2 has eight arp entries.

wino_msfc_1#show arp | include 06c5

Internet 172.17.252.179 146 0009.b77f.06c5 ARPA Vlan745

wino_msfc_2#show arp | include 06c5

Internet 172.17.254.3 151 0009.b77f.06c5 ARPA Vlan745

Internet 172.17.254.2 151 0009.b77f.06c5 ARPA Vlan745

Internet 172.17.254.7 147 0009.b77f.06c5 ARPA Vlan745

Internet 172.17.254.6 148 0009.b77f.06c5 ARPA Vlan745

Internet 172.17.254.5 149 0009.b77f.06c5 ARPA Vlan745

Internet 172.17.254.4 151 0009.b77f.06c5 ARPA Vlan745

Internet 172.17.254.9 147 0009.b77f.06c5 ARPA Vlan745

Internet 172.17.252.179 146 0009.b77f.06c5 ARPA Vlan745

Any suggestions?

Thanks in advance

1 REPLY
Bronze

Re: 6509 multiple arp entries for clients

I would suggest running a debug arp on MSFC_1 to see why the arp cache is not being updated.

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