The advantage of implementing an active-active firewall cluster that is stretched across separate pods when anycast services are configured is that local traffic within a pod is load-balanced between the clustered firewalls. This means that traffic destined for the anycast IP address of the service node (firewall) will preferentially be directed to the local node within the same pod, thus optimizing traffic flows and reducing latency by avoiding unnecessary traffic tromboning to a remote pod1.
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