VXLAN Head End Replication Counters

This feature introduces support for collecting statistics (stats) for head end replication (HER) packets to tunnels, on VXLAN VLANs and enhances the tunnel stats output to display counter for head replicated packets.

When Broadcast/UnknownUnicast/UnknownMcast traffic is flooded on VXLAN VLANs, the traffic is head end replicated to tunnels which are part of the VXLAN. Currently, Netvisor One uses vxlan-loopback-trunk port stats counters for HER packets statistics. Although all tunnels use the same vxlan-loopback-trunk ports, this provides a very cumulative view of the system.

This feature provides additional counters for HER packets per tunnel.

Statistical objects and flexible counters are attached to multicast VPs created for head end replication for each tunnel. Packet (pkt) and byte counts for HER statistics are per tunnel. Two new fields are added to tunnel-stats-show output as HER-pkts, HER-bytes and provides flood packet counters per tunnel. Tunnel updates are local to each node and therefore there is no impact to High Availability (HA).

CLI (network-admin@Spine1) > tunnel-stats-show show-diff-interval 1 format all