can't get stateful failover on active/backup load balancers to work (CSS11501)
Having some issues with load balancing two webservers using two CSS11501 content service switches (VIP/interface redundancy, Active/Backup, and Active Session Redundancy setup).
I've set up both CSSs to load balance the web servers behind it, and it works with Active/Backup setup. When I configure it with Active Session Redundancy though for stateful failover, I start to have issues. For example, as a test, I'm downloading a file through the load balancers from the web server. Mid-download, when I do a reboot on the master CSS, the download just suddenly stops (meaning, my ASR stateful config didn't work.. duhh). the funny thing is this: after the CSS finishes rebooting, and both are up again, I can't access the web servers through vip address at all (times out on my web browser). To get it up and running again, I would first need to unplug the ethernet cables from the master CSs, wait awhile, then re-attach.
I've tried many variations on fixing this issue, but have been unsuccessful. Any help is appreciated. I've attached the running config on both CSSs for your reference (i've chnaged the IPs around, of course, but you get the idea):
!*************************** GLOBAL ***************************
can't get stateful failover on active/backup load balancers to w
just to add to the previous post, i didn't configure any critical services - but I don't believe this should be an issue. You can see in the configuration. As well, I don't have any issues with both CSSs failing over when I have both up and running, and I manually power down / or simply unplug one CSS... it fails over well from master to backup and vice versa.
I only have an issue when i reboot one CSS - it never seems to recover when I reboot, even after the one CSS comes back up.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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