3Com 8807 Configuration Manual page 479

Controlling the Source
Information Created
Please perform the following configurations in MSDP view.
Table 471 Request source information of MSDP peers
Operation
Configure the router to send SA request
message to the specified MSDP peer when
receiving the join message of a group
Restore the default configuration
The SA request message sent by a local RP will get the immediate response about
all active sources.
By default, the router does not send SA request message to its MSDP peer when
receiving the join message of a group. Instead, it waits for the arrival of SA
message of the next period.
Filtering the multicast routing entries imported
RP filters the registered sources to control the information of the active sources
advertised in SA message. MSDP peers can be configured to only advertise the
qualified (S, G) entries in the multicast routing table when creating SA messages,
that is, to control the (S,G) entries imported from the multicast routing table to the
domain.
Please perform the following configurations in MSDP view.
Table 472 Filter the multicast routing entries imported
Operation
Advertise only the (S, G) entries permitted by
the ACL
Remove the above configuration
By default, only intra-domain sources are advertised in SA messages.
If the import-source command without acl parameter is executed, no source is
advertised in SA messages.
Filtering SA request messages
Please perform the following configurations in MSDP view.
Table 473 Filter SA request messages
Operation
Filter all the SA request messages from a
specified MSDP peer
Filter the SA request messages of the groups
of a specified MSDP peer permitted by the
basic ACL from
Remove the configuration of filtering SA
request messages
By default, only the routers which caches SA messages can respond to SA request
messages. Routers receive all SA request messages from its MSDP peers.
MSDP Configuration
Command
peer peer-address request-sa-enable
undo peer peer-address request-sa-enable
Command
import-source [ acl acl-number ]
undo import-source
Command
peer peer-address sa-request-policy
peer peer-address sa-request-policy acl
acl-number
undo peer peer-address sa-request-policy
479