ACE20 Health Check Failed

Question

L4 Model : ACE20-MOD-K9
One Server Operational TCP Services
Other TCP Services OK but TCP 5050 Service Not OK
I Tested from my pc
telnet 172.17.1.235 5050 Success
but ACE20 Health Check Failed
probe       : PROBE5050
 type        : TCP
 state       : ACTIVE
 description :
   port      : 5050    address     : 0.0.0.0         addr type  : -          
   interval  : 2       pass intvl  : 2               pass count : 3   
   fail count: 3       recv timeout: 10  
   conn termination : GRACEFUL 
   expect offset    : 0         , open timeout     : 4        
   expect regex     : -
   send data        : -
                       --------------------- probe results --------------------
   probe association   probed-address  probes     failed     passed     health
   ------------------- ---------------+----------+----------+----------+-------
   real        : 172-17-1-235[5050]
     serverfarm: BKMWEB#5
                       172.17.1.235    491        486        5          FAILED
   Socket state        : CLOSED
   No. Passed states   : 0         No. Failed states : 1
   No. Probes skipped  : 441         Last status code  : 0
   No. Out of Sockets  : 0         No. Internal error: 0
   Last disconnect err : Connection refused by server
   Last probe time     : Wed Apr  2 20:04:44 2014
   Last fail time      : Wed Apr  2 19:33:30 2014
   Last active time    : Never
What is this Cause?  Help me

Answer 1

Hi Tae,
The last disconnect error says "connection refused by server". I guess only way for us to know what exactly is going on is to take a packet capture on switch where server and ACE are connected and see what is going on. May be server is not replying to ACE. Why? I guess only packet capture can clear that since telnet from your pc worked. Also, your interval time is very less. Please increase it to at least 10-20 seconds.
Regards,
Kanwal