F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Configuration Guide-6PW100

641
39BConfiguring MSDP
208B
Overview
MSDP is an inter-domain multicast solution that addresses the interconnection of protocol independent
multicast sparse mode (PIM-SM) domains. It discovers multicast source information in other PIM-SM
domains.
In the basic PIM-SM mode, a multicast source registers only with the RP in the local PIM-SM domain, and
the multicast source information about a domain is isolated from that of another domain. As a result, the
RP obtains the source information only within the local domain, and a multicast distribution tree is built
only within the local domain to deliver multicast data from a local multicast source to local receivers.
MSDP enables the RPs of different PIM-SM domains to share their multicast source information, so that the
local RP can join multicast sources in other domains. This allows multicast data to be transmitted among
different domains.
With MSDP peer relationships established between appropriate routers in the network, the RPs of
different PIM-SM domains are interconnected with one another. These MSDP peers exchange source
active (SA) messages, so that the multicast source information is shared among these different domains.
MSDP is applicable only if the intra-domain multicast protocol is PIM-SM. MSDP is meaningful only for
the ASM model.
For more information about the concepts of designated router (DR), bootstrap router (BSR),
candidate-BSR (C-BSR), rendezvous point (RP), candidate-RP (C-RP), shortest path tree (SPT) and
rendezvous point tree (RPT) mentioned in this document, see Appendix Protocol References.
The term "router" in this document refers to both routers and routing-capable firewalls and UTM devices.
MSDP can be configured only at the CLI.
209B
MSDP configuration task list
Task Remarks
2828H
Configuring basic MSDP
functions
2829H
Enabling MSDP Required.
2830H
Creating an MSDP peer connection Required.
2831H
Configuring a static RPF peer Optional.
2832H
Configuring an MSDP peer
connection
2833H
Configuring MSDP peer description Optional.
2834H
Configuring an MSDP mesh group Optional.
2835H
Configuring MSDP peer connection control Optional.
2836H
Configuring SA message
related parameters
2837H
Configuring SA message content Optional.
2838H
Configuring SA request messages Optional.
2839H
Configuring SA message filtering rules Optional.
2840H
Configuring the SA cache mechanism Optional.