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Forum Discussion

Brett_10751's avatar
Brett_10751
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Sep 22, 2015

F5 failover from 11.4.0 to 11.6.0 breaks SQL connections - Connection Mirroring or Loose Initiation needed?

I attempted to upgrade from 11.4.0 to 11.6.0. I upgraded standby to 11.6.0 and failed over to it. Many http and https virtual servers continued to work however all http virtual servers that make ca...
application delivery
availability
deployment
design
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performance
Brett_10751's avatar
Brett_10751
Icon for Nimbostratus rankNimbostratus
Sep 23, 2015

So the fastl4 profile has Hardware SYN cookie protection enabled and our B2100 blade is capable of it. When I look at Virtual server statistics SYN status says off, 0 hardware and software SYN accepted but I do have 2.6K and 2.16K under Software SYN rejected. ltm logs show no sign of SYN cookie hardware mode activated or threshold being met