3com 5500-ei pwr Instrução De Instalação

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5  
MSDP Configuration 
When configuring MSDP, go to these sections for information you are interested in: 
 
 
In this manual, the term “router” refers to a router in the generic sense or a Layer 3 Ethernet switch 
running an IP multicast protocol.  
Because Multicast Source Discovery Protocol (MSDP) does not support the XRN feature, MSDP 
cannot be configured in fabric.  
 
MSDP Overview 
Introduction to MSDP 
Multicast Source Discovery Protocol (MSDP) is an inter-domain multicast solution developed to 
address the interconnection of Protocol Independent Multicast sparse mode (PIM-SM) domains. It is 
used to discover 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 of a domain is isolated from that of another domain. As a result, the 
RP is aware of 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. 
If there is a mechanism that allows RPs of different PIM-SM domains to share their multicast source 
information, the local RP will be able to join multicast sources in other domains and multicast data can 
be transmitted among different domains.