3com 3031 Instruccion De Instalación
636
C
HAPTER
49: MSDP C
ONFIGURATION
By default, the maximum number of SAs cached is 2048.
Requesting the Source
Information from an
MSDP Peer
When a new group joins, the router will send a SA request message to the
specified MSDP peer, and the MSDP peer will respond with the SA messages it
caches. If the MSDP peer does not enable the SA caching, the configuration is
invalid.
specified MSDP peer, and the MSDP peer will respond with the SA messages it
caches. If the MSDP peer does not enable the SA caching, the configuration is
invalid.
Perform the following configuration in MSDP view.
The SA request message sent by a local RP will get the immediate response about
all active sources.
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.
receiving the join message of a group. Instead, it waits for the arrival of SA
message of the next period.
Controlling the Source
Information Created
Filtering the multicast routing entries imported
RP filters the registered sourcse 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.
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.
Perform the following configuration in MSDP view.
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
Perform the following configuration in MSDP view.
Table 734 Requesting the source information from an MSDP peer
Operation
Command
Configure the router to send SA
request message to the specified
MSDP peer when receiving the join
message of a group
request message to the specified
MSDP peer when receiving the join
message of a group
peer peer-address request-sa-enable
Restore the default configuration
undo peer peer-address
request-sa-enable
Table 735 Filtering the multicast routing entries imported
Operation
Command
Advertise only the (S, G) entries
permitted by the ACL
permitted by the ACL
import-source [ acl acl-number ]
Remove the above configuration
undo import-source
Table 736 Filtering SA request messages
Operation
Command
Filter all the SA request messages
from a specified MSDP peer
from a specified MSDP peer
peer peer-address sa-request-policy
Filter the SA request messages of the
groups of a specified MSDP peer
permitted by the basic ACL
groups of a specified MSDP peer
permitted by the basic ACL
peer peer-address sa-request-policy acl
acl-number