BIG-IP 11.4 Behavior Change: Global Data Now Partitioned by Traffic Group
Prior to v11, active-standby and active-active in paired devices were your only options for failover configurations. Traffic groups were introduced in BIG-IP version 11 to allow administrator...
Published Jun 18, 2013
Version 1.0
JRahm
Admin
AdminJRahmAdmin
Admin
Being aware of this behaviour is relevant in with SNAT deployments.
We need to apply SNATs and floating self IPs per traffic group to make sure the servers responses will reach the right device.
If no virtual address is available for SNAT in a traffic group, the local self IP (traffic-group-local-only) will be picked for SNAT. But the servers responses to this address will be dropped now.
In the past it was possible to make use of the 'global' tables by applying mirroring to handle asymmetric traffic as a workaround. This won´t work anymore, I guess.