What is ERR20162?
|ERR20162||2012-12-06 13:47:49 - SA02 - [184.108.40.206] userid(Realm)[Role] - Unable to open connection to server owa.domain.com:443|
This the error that appears sometimes when accessing OWA2010 via web resource.
I cannot find any differences between a working session and a faulty one. The web requests looks the same.
If the user who receives the error message "Returns to previous page" and tries again, there is no problem.
Not much to go on but from the message and the fact that it works if the user trys again I'd suspect a timing issue, maybe a dns resolution timeout issue.
Yes, the OWA servers are load balanced with a F5 Big-IP...
Any experience with this, Jay?
No failures in BigIP (hard to see.. BigIP has really bad logging possibilities).
Not replicable on-demand, very intermittent.
BigIP sends the request to the server with "least connections". Will try to do a TCP dump on BigIP and SA boxes even though it is very far between failures..
saw this when CAS was load balanced in 2007. If we made the load active passive went away. We are ready to move to 2010. I will follow this post.
It does seem that the load balancer is not forwarding the traffic sometimes.A timing related setting on the LB could be causing this.A tcp dump from the Juniper when the issue is seen will be useful.
Yes, it sure looks like that could be the problem, however - when accessing the load balanced URL from LAN, there are no problems.
I think opening a JTAC case will be handy so that we can investigate the same.
If you point the web bookmark directly to individual OWA servers, we can see if the same issue exists