Msdp Configuration; Introduction To Msdp - Planet XGS3-42000R User Manual

 PIM-SM Protocol requires supports by RP and BSR, therefore you should use show ip pim bsr-router
first to see if there is BSR information. If not, you need to check if there is unicast routing leading to
BSR.
 Use show ip pim rp-hash command to check if RP information is correct; if there is not RP information,
you still need to check unicast routing.
If all attempts including Check are made but the problems on PIM-SM can't be solved yet, then use debug
commands such debug pim/debug pim BSR please, and then copy DEB UG information in 3 minutes and
send to Technology Service Center.

43.4 MSDP Configuration

43.4.1 Introduction to MSDP

MSDP – Multicast Source Discovery Protocol, is a protocol that can learn information about multicast source
in other P IM-SM domain. The RP on which MS DP is configured will advertise the information about the
multicast sources in its domain to all the other MS DP entities through SA messages. Thus, all the information
about multicast sources in one PIM-SM domain is spread to another. In MS DP, inter-domain information tree
is used other than the shared tree. It is required that the multicast routing protocol used for in-domain routing
must be PIM-SM.
 The work flow for RP in PIM-SM protocol
Multicast
Application Server
4 Switching to the
shortest path tree
and do the delivery
1 PIM Register
Packet
43-15
RP
3 The
multicast
date is
deliveried
through the
shared tree
2 The subscriber
join the group
Subscriber