ARP default timeout in Cisco ASA-X

[Chin]

Hi, 

I  have DMZ(Web Servers) and Public , 2 interfaces in Cisco ASA-X. The ARP default timeout in ASA is 14400 seconds (4 hours). My web servers running in virtual machine. 1 of the machine shutdown and it not able to failover to another machine is because of the longest ARP timeout in ASA?

My DMZ vlan is sitting in ASA-X, but not switch.

Please advise. 

[Reza Sharifi]

Hi,

That should not be because ARP timeout.  Perhaps, there is something wrong with load balancing between your 2 servers.

HTH

[Chin]

Hi Reza, 

The ServerA been shutdown. but the arp table still caching the mac address of ServerA for 4 hours. Would that "clear arp" for ServerA in ASA and let ServerB failover in cluster?

[Reza Sharifi]

Hi,

Yes, if this is an ARP issue, after serverA is shutdown, clear the ARP cash and see if it fails-over to serverB.

HTH