Configuring Sa Message Policies - HP FlexNetwork 7500 Series Configuration Manual

IMPORTANT:
Before you enable the router to send SA requests, make sure you disable the SA message cache
mechanism.
To configure SA request messages:
Step
Enter system view.
1.
Enter MSDP view.
2.
Enable the device to send SA
3.
request messages to an
MSDP peer.
Configure an SA request
4.
policy.

Configuring SA message policies

To control the propagation of multicast source information, you can configure the following policies:
•
SA creation policy—Limits the multicast source information advertised in SA messages. This
policy enables the router to advertise (S, G) entries based on the referenced ACL that specifies
the multicast sources and groups.
•
SA incoming or outgoing policy—Limits the receipt or forwarding of SA messages. This
policy enables the router to receive or forward SA messages based on the referenced ACL that
specifies the multicast sources and groups.
By default, multicast data packets are encapsulated in SA messages and forwarded to MSDP peers
only if the TTL values in the packets are larger than zero. You can set the lower TTL threshold for
multicast data packets encapsulated in SA messages that are sent to an MSDP peer. Then, only
multicast data packets whose TTL values are larger than or equal to the configured value are
encapsulated in SA messages. Only SA messages whose TTL values are larger than or equal to the
configured value are forwarded to the specified MSDP peer. This controls the multicast data packet
encapsulation and limits the propagation range of the SA messages.
To configure SA message policies:
Step
Enter system view.
1.
Enter MSDP view.
2.
Configure an SA creation
3.
policy.
Configure an SA incoming or
4.
outgoing policy.
Command
system-view
msdp [ vpn-instance
vpn-instance-name ]
peer peer-address
request-sa-enable
peer peer-address
sa-request-policy [ acl
acl-number ]
Command
system-view
msdp [ vpn-instance
vpn-instance-name ]
import-source [ acl acl-number ]
peer peer-address sa-policy
{ export | import } [ acl
acl-number ]
160
Remarks
N/A
N/A
By default, after receiving a
new join message, a device
does not send an SA request
message to any MSDP peer.
Instead, it waits for the next SA
message from its MSDP peer.
By default, SA request policies
are not configured.
Remarks
N/A
N/A
By default, SA creation policies
are not configured.
By default, SA incoming or
outgoing policies are not
configured.