3com 5500-ei pwr Instruccion De Instalación

 

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Before you configure an MSDP mesh group, make sure that the routers are fully connected with 

one another. 

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The same group name must be configured on all the peers before they can join a mesh group. 

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If you add the same MSDP peer to multiple mesh groups, only the latest configuration takes effect. 

 

The connection between MSDP peers can be flexibly controlled. You can disable the MSDP peering 

relationships temporarily by shutting down the MSDP peers. As a result, SA messages cannot be 

transmitted between these two peers. On the other hand, when resetting an MSDP peering relationship 

between faulty MSDP peers or bringing faulty MSDP peers back to work, you can adjust the retry 

interval of establishing a peering relationship through the following configuration. 

Follow these steps to configure MSDP peer connection control: 

Enter system view 

— 

Enter MSDP view 

— 

Shut down the connection with 
the specified MSDP peer 

shutdown peer-address 

Optional 

By default, all MSDP peering 
connections are up.  

Configure the retry interval of 
MSDP peer connection 
establishment  

timer retry seconds 

Optional 

30 seconds by default 

 

An SA message contains the IP address of the multicast source S, multicast group address G, and RP 

address. In addition, it contains the first multicast data received by the RP in the domain where the 

multicast source resides. For some burst multicast data, if the multicast data interval exceeds the SA 

message hold time, the multicast data must be encapsulated in the SA message; otherwise, the 

receiver will never receive the multicast source information.  

By default, when a new receiver joins, a router does not send any SA request message to its MSDP 

peer but has to wait for the next SA message. This defers the reception of the multicast information by 

the receiver. In order for the new receiver to know about the currently active multicast source as quickly 

as possible, the router needs to send SA request messages to the MSDP peer.  

Generally, a router accepts all SA messages sent by all MSDP peers and sends all SA messages to all 

MSDP peers. By configuring the rules for filtering SA messages to receive/send, you can effectively 

control the transmission of SA messages among MSDP peers. For forwarded SA messages, you can 

also configure a Time-to-Live (TTL) threshold to control the range where SA messages carrying 

encapsulated data are transmitted.