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Persistence Issue on LTM

Akeem
Nimbostratus
Nimbostratus

Please advise if possible Issue:

 

Intermittent ASP.NET times-outs occurring intermittently when accessing an ASP.NET based application when using a pool of load balanced servers with the HTTP Cookie Insert option selected for persistence.  No issues occur when using single pool member.

 

The back-end application is running IIS 8.5 Server log error is:

 

2020-04-01 11:21:13 10.71.244.57 POST /AthenaCustody/Pages/AjaxMethods.aspx/LogJavascriptError - 80 - 10.71.244.1 Mozilla/5.0+(Windows+NT+10.0;+Win64;+x64)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/80.0.3987.122+Safari/537.36 http://ppfeglcnaweb01/AthenaCustody/Pages/Arrest.aspx?CustodyRecordId=0 500 0 0 0

 

 

3 REPLIES 3

Simon_Blakely
F5 Employee
F5 Employee

You need to check the pool member logs to see if that particular session was originally established on another IIS server (probably by tracking the ASP.Net session ID).

 

You might want to manage the persistence using

K7392:  Overview of universal persistence

 

based on something like an ASP.Net session ID.

Akeem
Nimbostratus
Nimbostratus

Thanks for the information, I'll investigate your advice and feedback.

 

Akeem
Nimbostratus
Nimbostratus

Still investigating the issue.

I can confirm that when the customer uses the Single-Sign-On URL (https://connect-ppf-full) there are no issues

However they also use another method called: MockIAM route (http://ppfeglxxxweb01/gemlogin/mockIAM.jsp) , which uses a ReverseByPasss proxy file.

 

We have an issue with this method I've gathered some TCPDUMPs that we're currently analyzing. Will let you know what the outcome is.