Controlling The Received Source Information - H3C S9500 Series Operation Manual

Operation Manual – MSDP
H3C S9500 Series Routing Switches
Filtering off all the (S, G) entries
Forwarding only the SA messages permitted by the advanced ACL
Perform the following operations in MSDP view to use MSDP outbound filter to control
the source information forwarded:
Filter off all the SA messages to a specified
MSDP peer
Forward the SA messages permitted by the
advanced ACL to a specified MSDP peer
Remove the filtering over the source
information forwarded
II. Using TTL to filter SA messages with encapsulated data
An SA message with encapsulated data can reach the specified MSDP peer only when
the TTL in its IP header is no less than the threshold. Therefore, the forwarding of SA
messages with encapsulated data can be controlled by configuring the TTL threshold.
For example, you can set the TTL threshold for intra-domain multicast traffic to 10 if you
wish to restrict SA messages with TTL less than or equal to 10 carrying encapsulated
data from being propagated. If you set the TTL threshold greater than 10, then they can
be propagated to outside.
Perform the following operations in MSDP view to use TTL to filter SA messages with
encapsulated data or the remove the configuration:
Filter off the multicast data encapsulated
in the first SA message aiming at a
specified MSDP peer
Remove the TTL threshold configuration
The default value of TTL threshold is 0.

1.2.10 Controlling the Received Source Information

Perform the following operations in MSDP view to control the received source
information:
Filter off the SA messages from a specified
MSDP peer
To do...
To do...
To do...
1-9
Chapter 1 MSDP Configuration
Use the command...
peer peer-address sa-policy export
peer peer-address sa-policy export
acl acl-number
undo peer peer-address sa-policy
export
Use the command...
peer peer-address minimum-ttl ttl
undo peer peer-address minimum-ttl
Use the command...
peer peer-address sa-policy import