MSDP Total Source-Active Cache - 3 entries
MSDP matched 3 entries
(8.8.8.8, 225.0.0.200)
Origin RP: 4.4.4.4
Pro: BGP, AS: 10
Uptime: 00:00:33, Expires: 00:05:27
(8.8.8.8, 225.0.0.201)
Origin RP: 4.4.4.4
Pro: BGP, AS: 1.0
Uptime: 00:00:33, Expires: 00:05:27
(8.8.8.8, 225.0.0.202)
Origin RP: 4.4.4.4
Pro: BGP, AS: 65535.65535
Uptime: 00:00:33, Expires: 00:05:27
7.9 Configuring the Filtering Rules for SA Messages
By default, a device receives all SA messages that pass the RPF check, and forwards the SA
messages to all MSDP peers. To control the transmission of SA messages among MSDP peers,
you can configure rules to filter the constructing, receiving, and forwarding SA messages.
7.9.1 Establishing the Configuration Task
After PIM-SM inter-domain multicast or anycast RP in a PIM-SM domain is configured, you
can configure filtering rules for SA messages.
Applicable Environment
By default, MSDP switchs receive all SA messages that pass the RPF check and forward them
to all MSDP peers. To control of the transmission of SA messages among MSDP peers, users
can configure various filtering rules by using the following methods:
l Setting the rules for filtering the multicast source of an SA message on the source RP. The
source RP filters active multicast sources that register with the local switch, and determines
the (S, G) entries to be sent according to the rules.
l Setting the rules for filtering an SA message received from a remote MSDP peer. When an
SA message sent by a remote MSDP peer reaches a switch, the switch determines whether
to receive the message based on the rules.
l Setting the rules for filtering an SA message forwarded to a remote MSDP peer. Before
forwarding the SA message to the remote MSDP peer, the switch determines whether to
forward it based on the rules.
Pre-configuration Tasks
Before configuring the filtering rules for SA messages, complete the following tasks:
l Configuring a unicast routing protocol to implement interconnection at the network layer
l Enabling IP multicast
l Configuring a PIM-SM domain to implement intra-domain multicast
l Configuring PIM-SM Inter-domain Multicast or Configuring an Anycast RP in a
PIM-SM Domain
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 7 MSDP Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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