Welcome to ISAserver.org

random requests failing

Users viewing this topic: none

Logged in as: Guest

Printable Version

All Forums >> [ISA 2006 Firewall] >> General >> random requests failing

Page: [1]

Message

<< Older Topic Newer Topic >>

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

CM2005

Posts: 10
Joined: 3.Aug.2005
Status: offline

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

Featured Links*

RE: random requests failing - 4.Sep.2006 4:44:16 PM

tshinder

Posts: 47439
Joined: 10.Jan.2001
From: Texas
Status: offline

Hi CM,

What client type are you using?

Thanks!
Tom

_____________________________

Thomas W Shinder, M.D.
Sr. Consultant/Technical Writer
Prowess Consulting http://www.prowessconsulting.com/
Blog: http://blogs.isaserver.org/shinder/

GET THE NEW ISA 2006 Book!: http://tinyurl.com/2gpoo8

(in reply to CM2005)

Post #: 2

RE: random requests failing - 5.Sep.2006 10:52:08 PM

CM2005

Posts: 10
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: 231
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).

_____________________________

Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
My ISAServer.org Stuff
My Site

(in reply to CM2005)

Post #: 4

RE: random requests failing - 6.Sep.2006 3:43:03 PM

tshinder

Posts: 47439
Joined: 10.Jan.2001
From: Texas
Status: offline

Hi Jim,

Thanks!
Tom

_____________________________

Thomas W Shinder, M.D.
Sr. Consultant/Technical Writer
Prowess Consulting http://www.prowessconsulting.com/
Blog: http://blogs.isaserver.org/shinder/

GET THE NEW ISA 2006 Book!: http://tinyurl.com/2gpoo8

(in reply to Jim Harrison)

Post #: 5

RE: random requests failing - 6.Sep.2006 4:02:24 PM