CISCO ASA LOSING ARP

[ITBB]

Hello everyone,
I have a problem with a connection to a server located in another network. About 10 users in my LAN use the application on the local computer through which they connects to that server. For two years everything works as it should, however, lately it often happens that the connection to the server permanently lost. Then on the Cisco ASA I do "clear ARP" command and connection is again OK for awhile. Is there any other solution to do since I think that ASA losing ARP? I also try with static ARP but without success. How to troubleshoot this?

Thanks in advance

 

[North323]

is the server plugged directly in the ASA? bad cable? bad port? show interface, are there any errors on port?

 

[baddos]

IP address conflict?

 

[ITBB]

Thanks for reply,

As I said everything works fine for 2 years - there is no IP address conflict, no bad cable as well as no errors on port. Server is connected over 100BASE-FX (with media converter on booth sides) - checked works 100%

 

[baddos]

When you cannot communicate with the host, look at the arp table and write down it's mac address. Clear the arp table and verify that it's the same mac address.

 

[ITBB]

baddos,

I try taht but without success. I also try to specify the IP and MAC address combination to add a static entry to the device ARP cache, but as I said without success.