topic Re: Too many connections failed? in Application Networking

Too many connections failed?

hugues.brunel — Thu, 25 Sep 2008 05:40:35 GMT

I use an ACE4710 pair in failover.

The WAN side is in VLAN 7 and the LAN side in VLAN 8. RealServers have private IP (192.168...) and Virtual IP of the service is a public internet address.

The ServerFarm is a Apache2 WebServer farm (only port 80).

The service is up from 2 days and here are the stats:

# sh stats conn

+------------------------------------------+

+------- Connection statistics ------------+

+------------------------------------------+

Total Connections Created : 86132

Total Connections Current : 485

Total Connections Destroyed: 46322

Total Connections Timed-out: 1867

Total Connections Failed : 37458

All the services seem to be fine from me, but where these "Connections Failed" could come from??

Thanks for any idea,

Regards,

Hugues.

Re: Too many connections failed?

Gilles Dufour — Thu, 25 Sep 2008 09:51:33 GMT

Hugues,

always provide your software version when sending a question. It helps.

There was a known issue where connections closed with a RST where considered a failure even if the connection was successful.

Re: Too many connections failed?

hugues.brunel — Thu, 25 Sep 2008 10:16:33 GMT

Thank you for your response 🙂

Here is my software version:

Software

loader: Version 0.95

system: Version A3(1.0) [build 3.0(0)A3(1.0) adbuild_21:37:54-2008/08/10_/auto/adbu-rel4/rel_a3_1_0_throttle_buil/REL_3_0_0_A3_1_0]

system image file: (hd0,1)/c4710acemz.A3_1_0.bin

Device Manager version 1.1 (0) 20080805:0415

Where do I get information about this known issue?

Re: Too many connections failed?

Gilles Dufour — Thu, 25 Sep 2008 10:36:17 GMT

ok, your version should have the fix.

I was thinking about the following ddts :

CSCsh14278 - sh serverfarm failure conn incremented for successful connection

You will need to open a service request with the TAC so we can investigate further.

We will need a sniffer trace capture during the problem.

Start the trace, check the counter, and when there is a failure stop the trace.

Re: Too many connections failed?

hugues.brunel — Thu, 25 Sep 2008 15:40:24 GMT

ok, I will take the time to make a capture tomorrow morning.

I will post the response.

Thx,

Hugues.