3. Enable multicast and PIM-SM on each interface, configure the boundary domain, and
enable the IGMP function on the interfaces connected to hosts.
4. Configure the C-BSR and C-RP. Configure the RPs of PIM-SM1 and PIM-SM2 on the
ASBR.
5. Establish MSDP peer relationship between RPs of each domain. The MSDP peers and the
EBGP peers between ASs use the same interface addresses. According to the RPF rule, the
Switches receive SA messages from the next hop toward the source RP.
Data Preparation
To complete the configuration, you need the following data:
l Address of multicast group G: 225.1.1.1/24
l Number of the AS that SwitchA and SwitchB belong to, namely 100, and router ID of
SwitchB, namely, 1.1.1.1
l Number of the AS that SwitchC and SwitchD belong to, namely 200, and Router ID of
SwitchC, namely, 2.2.2.2
l Number of the AS that SwitchE and SwitchF belong to, namely 200
NOTE
This configuration example describes only the commands related to MSDP configuration.
Procedure
Step 1 Configure the IP addresses of interfaces and the unicast routing protocol.
# According to Figure 7-1, configure IP addresses and masks for the interfaces on each
Switch. Configure the OSPF protocol between Switches. Ensure the communication on the
network layer within an AS. Ensure the dynamic route update between Switches through unicast
routing protocol. The configuration procedure is not provided here.
Step 2 Configure EBGP peer relationship between ASs and import routes of BGP and OSPF into each
other's routing table.
# Configure EBGP on SwitchB and import OSPF routes.
[SwitchB] bgp 100
[SwitchB-bgp] router-id 1.1.1.1
[SwitchB-bgp] peer 192.168.2.2 as-number 200
[SwitchB-bgp] import-route ospf 1
[SwitchB-bgp] quit
# Configure EBGP on SwitchC and import OSPF routes.
[SwitchC] bgp 200
[SwitchC-bgp] router-id 2.2.2.2
[SwitchC-bgp] peer 192.168.2.1 as-number 100
[SwitchC-bgp] import-route ospf 1
[SwitchC-bgp] quit
# Import BGP routes to OSPF on SwitchB. The configuration on SwitchC is similar to the
configuration on SwitchB, and is not provided here.
[SwitchB] ospf 1
[SwitchB-ospf-1] import-route bgp
[SwitchB-ospf-1] quit
Step 3 Enable multicast, enable PIM-SM on all interfaces, configure the domain boundary, and enable
IGMP on the interface connecting to the host.
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.
262
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