If a router receives a multicast packet via an interface in the outgoing interface list associated with a
multicast source, send a PIM Assert message out the interface to resolve which router will continue
forwarding this traffic.
When the Assert mechanism is triggered on an interface, a PIM router sends a PIM Assert message
containing its metric to the source. All PIM routers on the network examine the metric in the PIM Assert
message to determine which router has the best metric back to the multicast source. The router with the best metric continues to forward traffic from this source onto the network while all other PIM routers prune their interface. If there is a tie in the metrics, the router addresses are used as the tiebreaker and the highest IP address wins.
And about DRs:
The DR is primarily used in sparse mode networks and has little meaning in dense mode networks.
The only exception to this rule is when IGMPv1 is in use on an interface. In this case, the PIM-DR also
functions as the IGMP Query Router since IGMPv1 does not have a Query Router election mechanism.
so, I dont think one thing is related to the other.
Question We run asr9001 with XR 6.1.3, and we have a very long delay to
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Introduction The purpose of this document is to demonstrate the Open
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