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random requests failing

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random requests failing - 30.Aug.2006 7:08:41 PM   
CM2005

 

Posts: 15
Joined: 3.Aug.2005
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Hello,
I have 2 ISA2006 EE servers in a load balanced array, everything appears to be working fine except at random (about 2% of the time) a request fails with the following error information from the ISA logs:

Error Information | HTTP Status Code

0x603                |  121

Error Information | HTTP Status Code

0x603                |  64


I have not been able to find anything anywhere that has shed any light on this problem, any idea what may be the issue?




< Message edited by CM2005 -- 30.Aug.2006 7:14:46 PM >
Post #: 1
RE: random requests failing - 4.Sep.2006 4:44:16 PM   
tshinder

 

Posts: 50013
Joined: 10.Jan.2001
From: Texas
Status: offline
Hi CM,

What client type are you using?

Thanks!
Tom

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Thomas W Shinder, M.D.

(in reply to CM2005)
Post #: 2
RE: random requests failing - 5.Sep.2006 10:52:08 PM   
CM2005

 

Posts: 15
Joined: 3.Aug.2005
Status: offline
various clients, but I do have an additional bit of information that may shed light on the problem:

The request in question is retrieving the data in a blob (binary large object bit-array), if we change it to return a string instead the problem goes away.  The problem is the data in the blob format is ~800kb, as a string it is ~2mb which causes a noticeable drop in performance and increased bandwidth usage.  This problem did not exist in ISA2004 EE, so it has to be something that changed

(in reply to tshinder)
Post #: 3
RE: random requests failing - 6.Sep.2006 3:40:18 PM   
Jim Harrison

 

Posts: 271
Joined: 5.May2001
From: Redmond, WA
Status: offline
When Tom asks "what client type", he means "are you making SecureNET, Web Proxy or Firewall Client requests?"

Is this traffic SSL?
Typically, you'll see result-code 64 in the web proxy for tunneled SSL traffic because ISA can't "see" the HTTP communications therein (unless you have ClearTunnel, but that's a horse of a different barrel-monkey).
Result-code 121 indicates a "The semaphore timeout period has expired." error; probably indicating the SSL session has died.
What you need to do is grab http://www.microsoft.com/downloads/details.aspx?familyid=D22EC2B9-4CD3-4BB6-91EC-0829E5F84063, install it, and run %ProgramFiles%\Microsoft ISABPA\isabpapack +repro' and follow the instructions.
It'll produce a .cab file on your desktop that contains all the data needed to understand the scenario (if you cause it to happen).

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(in reply to CM2005)
Post #: 4
RE: random requests failing - 6.Sep.2006 3:43:03 PM   
tshinder

 

Posts: 50013
Joined: 10.Jan.2001
From: Texas
Status: offline
Hi Jim,

Thanks!
Tom

_____________________________

Thomas W Shinder, M.D.

(in reply to Jim Harrison)
Post #: 5
RE: random requests failing - 6.Sep.2006 4:02:24 PM   
CM2005

 

Posts: 15
Joined: 3.Aug.2005
Status: offline
Thanks,
I will give that a try and let you know what the results were.

(in reply to tshinder)
Post #: 6
RE: random requests failing - 6.Sep.2006 7:56:52 PM   
CM2005

 

Posts: 15
Joined: 3.Aug.2005
Status: offline
The client type is web proxy, and we are not using ssl.

I ran the tool you suggested,  trying to decipher the information in the cab file currently.

(in reply to CM2005)
Post #: 7

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