Multicast Common Configurations - Zte ZXR10 GER User Manual

ZXR10 GER (V2.6.03) General Excellent Router User Manual Volume-I
Candidate RPs
Unicast Router
Member
Report
Message
Pruning
Message
MSDP
Purpose
Prerequisite
Steps
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The candidate-RPs is manually configured. The routers running
PIM-SM find each other and maintain the adjacency relation by
exchanging Hello messages. In the multi-across network, Hello
messages also contain the priority information of routers.
According to the parameter, select the designate router (DR).
The multicast source or the first hop router (DR directly
connected with the
registration message, and sends it to the RP through a unicast
router. When receiving the registration message, the RP de-
encapsulates and takes out the packets, and sends them to the
receiver of the group along the shared multicast tree.
Each host acting as a receiver joins the multicast group through
the member report message of the IGMP. The last hop router (or
the DP in the multi-access network) sends the received joining
message to the RP for registration level by level. After receiving
the joining message, the intermediary router checks whether it
has already had the router of the group. If yes, the intermediary
router adds the downstream request router to the shared
multicast tree as a branch. If not, it continues to send the
joining message to the RP.
When the RP or the multicast router is directly connected with
the receiver, it can switch to the source-based shortest path tree
from the shared multicast tree. When the RP receives the
registration message sent from a new multicast source, the RP
returns a joining message to the DR directly connected with the
multicast source. Thus, the shortest path tree from the source to
the RP is established.
After a DR or a router directly connected with multicast
members receives the first multicast packet from the multicast
group or the received packets reaches a threshold, it can switch
to the source-based shortest path tree from the shared multicast
tree. Once switchover occurs, the router will send a pruning
message to the upstream neighbor, requiring to leave the
shared tree.
Multicast Source
mechanism used to connect multiple PIMSM domains. It works
over the transmission control protocol (TCP) and provides
existence of multicast sources out of the PIM domain for the
PIM-SM.

Multicast Common Configurations

Below procedure gives information about multicast common
configurations.
Router Command Line Interface has been accessed.
Multicast common configuration is used to start the configuration
shared by the multicast group management protocol and the
source) encapsulates
Discovery Protocol
packets in
(MSDP): This is
a
a