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List:       loadbalancing-l
Subject:    RE : RE : [load balancing] F5 big IP load balance problem with HTTP session cookie
From:       "Alan Trancart" <alan.trancart () assurland ! com>
Date:       2003-05-12 7:27:25
[Download RAW message or body]

These two hotfixes have already been installed and it did not solve the problem

-----Message d'origine-----
De : Fenimore, Jack J [mailto:jfenimore@smartpipes.com] 
Envoyé : vendredi 9 mai 2003 17:58
À : 'lb-l@vegan.net'
Objet : RE: RE : [load balancing] F5 big IP load balance problem with HTTP session \
cookie



The CR number for the cookie affinity problem was 26211, and if you contact F5 \
(assuming this is the problem) they should be able to provide you with the following \
hotfixes: bsd.anip.cr26221  bsd.smp.cr26221

Jack Fenimore
Lead Network Engineer
SmartPipes, Inc.
jack@smartpipes.com
Software for Secure Networks --> www.smartpipes.com

-----Original Message-----
From: Alan Trancart [mailto:alan.trancart@assurland.com] 
Sent: Friday, May 09, 2003 10:02 AM
To: lb-l@vegan.net
Subject: RE : [load balancing] F5 big IP load balance problem with HTTP session \
cookie


I'm running 4.5PTF3 
I just noticed that PTF4 is not available for download anymore from F5 support site \
PTF5 is supposed to be available soon..


-----Message d'origine-----
De : Fenimore, Jack J [mailto:jfenimore@smartpipes.com] 
Envoyé : vendredi 9 mai 2003 15:45
À : 'lb-l@vegan.net'
Objet : RE: [load balancing] F5 big IP load balance problem with HTTP session cookie


Alan,

What version of BIG-IP are you running?  4.5PTF2 (and I believe 3 too) had some \
serious problems with load balancing and cookie persistence.  Client persistence \
works ok, though PTF4 fixed the problem.



Jack Fenimore
Lead Network Engineer
SmartPipes, Inc.
jack@smartpipes.com
Software for Secure Networks --> www.smartpipes.com

-----Original Message-----
From: Alan Trancart [mailto:alan.trancart@assurland.com] 
Sent: Friday, May 09, 2003 8:06 AM
To: lb-l@vegan.net
Subject: [load balancing] F5 big IP load balance problem with HTTP session cookie


Hi folks,

I'm using a F5 BIG IP to load balance http traffic to my pool of servers. The method \
used for persistence is HTTP cookie insertion, but we experiment some trouble as some \
users lose their HTTP sessions.. 

The F5 configuration has been verified by people from F5 and seems correct.

In my servers' logs i'd have something like that :

Server 1 : 
2003-05-05 01:11:05 client_IP_Adress - server1_IP_Adress 80 GET /somepage - 
2003-05-05 01:11:05 client_IP_Adress - server1_IP_Adress 80 GET /LoadBal/empty.asp - \
... +persist=554346688.20480.0000;+ASPSESSIONIDAASDDAQD=LACDBBJCMBPFHHAEDNBC
+AAIC
2003-05-05 01:11:05 client_IP_Adress - server1_IP_Adress 80 GET /somepage - ...
+persist=554346688.20480.0000;+ASPSESSIONIDAASDDAQD=LACDBBJCMBPFHHAEDNBC
+AAIC
2003-05-05 01:11:05 client_IP_Adress - server1_IP_Adress 80 GET /somepage  - ...
+persist=554346688.20480.0000;+ASPSESSIONIDAASDDAQD=LACDBBJCMBPFHHAEDNBC
+AAIC
2003-05-05 01:11:05 client_IP_Adress - server1_IP_Adress 80 GET /somepage - ...
+persist=554346688.20480.0000;+ASPSESSIONIDAASDDAQD=LACDBBJCMBPFHHAEDNBC
+AAIC
        
Then The user gets here although his session had already started on server 1 !
        
Server 3:   
2003-05-05 01:11:06 client_IP_Adress - server3_IP_Adress 80 GET \
/LoadBal/Create_user.asp - .. \
+persist=571123904.20480.0000;+ASPSESSIONIDAASDDAQD=LACDBBJCMBPFHHAEDNBC +AAIC
2003-05-05 01:11:06 client_IP_Adress - server3_IP_Adress 80 GET /somepage - ..
+persist=571123904.20480.0000;+ASPSESSIONIDAASDDAQD=LACDBBJCMBPFHHAEDNBC
+AAIC
;+ASPSESSIONIDGQQGGURQ=AHNONNICFONKCFEHIDKMOOCN

The user now has 2 ASPsessionIDs and lost his initial persist cookie, and was \
                switched to this server 
...
...
...

Server 2 :
etc .. 
same things happens here .. the users gets a third aspsessionId and a different \
"persist" cookie corresponding to this server !



Any help would be appreciated


Alan

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