Configuring The Originating Rp Of Sa Messages; Configuring Sa Request Messages - HP FlexFabric 5950 series Configuration Manual

the source-side DR and builds an SPT. Because the (S, G) entries have timed out, remote receivers
can never receive the multicast data from the multicast source.
To avoid this problem, you can enable the source-side RP to encapsulate multicast data in SA
messages. As a result, the source-side RP can forward the multicast data in SA messages to its
remote MSDP peers. After receiving the SA messages, the remote RP decapsulates the SA
messages and forwards the multicast data to the receivers in the local domain along the RPT.
To enable multicast data encapsulation in SA messages:
Step
1. Enter system view.
2. Enter MSDP view.
3. Enable multicast data
encapsulation in SA
messages.

Configuring the originating RP of SA messages

This feature enables an interface to originate SA messages and to use its IP address as the RP
address in SA messages. It is typically used in the Anycast-RP application.
By default, the RP address in SA messages originated by a member Anycast-RP is the Anycast-RP
address. The SA messages will fail the RPF check on the other members because the RP address in
SA messages is the same as the local RP address. In this case, source information cannot be
exchanged within the Anycast-RP. To solve the problem, you must specify an interface other than the
interface where the member Anycast-RP resides as the originating RP of SA messages.
To configure the originating RP of SA messages:
Step
1. Enter system view.
2. Enter MSDP view.
3. Configure an interface as
the originating RP of SA
messages.

Configuring SA request messages

By default, after receiving a new join message, a router waits for an SA message to obtain the
multicast source information and to join the SPT. You can enable the router to request source
information by sending SA request messages to an MSDP peer. This reduces the join latency.
An SA request policy enables the device to filter SA request messages from an MSDP peer by using
an ACL that specifies the multicast groups.
IMPORTANT:
Before you enable the router to send SA requests, make sure you disable the SA message cache
mechanism.
To configure SA request messages:
Command
system-view
msdp [ vpn-instance vpn-instance-name ]
encap-data-enable
Command
system-view
msdp [ vpn-instance vpn-instance-name ]
originating-rp interface-type
interface-number
181
Remarks
N/A
N/A
By default, an SA message
contains only (S, G)
entries, but not the
multicast data.
Remarks
N/A
N/A
By default, SA messages
are originated by the
actual RPs.