3550 behind ASA

[ashley_dew]

Hi,

I have a 3550 behind an ASA. I can ping the latter from a station in the DMZ but telnet works from time to time and fails from time to time.

Other switch under the same domain of type 2960 or 3560 are fine.

I am having the same problem with 2950 switches.

However on the LAN, it is fine ping and telnet is ok.

I see no routing issues on the ASA, only gives SYN timeout

[mchin345]

Please verify DNS and make sure in the routing settings on the other network. You check the routing and test it from the ASA, with both ping and traceroute. It is fine or not ?