Comment 2 for bug 1604427

For the OVS implementation, the load balancing of traffic to different port-pairs (Service Functions) in a port-pair-group uses the OVS Group table. Each bucket in the OVS Group directs packets to a different ingress port of the port-pairs within the port-pair-group. The OVS implementation uses a hash of the source IP address/MAC to distribute traffic to the buckets in the OVS Group. Traffic from the same source will be hashed to the same bucket in the OVS Group. This load balancing works effectively in hashing traffic from a large number of sources.