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BIG-IP may fail to forward server-side traffic if flow forwarding occurs due to an overload scenario, specifically due to flow collisions on the server-side connection when using the source-port preserve-strict option with UDP virtual configuration.
Forwarding flow removes the existing flow and causes traffic to be dropped.
BIG-IP configured with UDP virtual configuration with source-port preserve-strict. - CMP forwarding occurs when traffic on ingress is managed by a different TMM on egress. - Overload condition occurs on TMM that leads to forwarding the flow by keeping server-side connection. - Forwarded flow causes existing connection flow to be removed and interrupts current traffic flow.
Clear the existing connection from the connection table. For more information, refer to the article K53851362: Displaying and deleting BIG-IP connection table entries from the command line.
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