Rate sensitive upstream multicast hop (UMH) selection for multicast VPN source-active routes

You can use the traffic rate on the ingress PE to trigger the egress PE to use an alternative UHM. Two new commands are introduced to support this feature, min-rate and dampen. Use this feature, for example, to ensure that egress PEs only receive Source-Active A-D route advertisements from ingress PEs that are receiving traffic at or above a specified rate. Rather than advertising the Source-Active A-D route immediately upon learning of the S,G, the ingress PE waits the time specified in the dampen command for the traffic rate to remain above the min-rate before it sends Source-Active A-D route advertisements. If the rate drops below the threshold, the Source-Active A-D route is withdrawn. These new commands can be found at the [edit routing-instancesinstance-name protocols mvpn mvpn-mode spt-only source-active-advertisement] hierarchy level.