Procedure
Step 1 Assign IP addresses to interfaces on the switches according to Figure 9-3. The configuration
details are not provided here.
Step 2 Configure IS-IS to implement interworking among switches and ensure that route costs are the
same. The configuration details are not provided here.
Step 3 Enable multicast on all the switches and enable PIM-SM on each interface.
# Configure Switch A. The configurations on Switch B, Switch C, Switch D, and Switch E are
similar to the configuration on Switch A, and are not provided here.
[SwitchA] multicast routing-enable
[SwitchA] interface Vlanif10
[SwitchA-Vlanif10] pim sm
[SwitchA-Vlanif20] quit
[SwitchA] interface Vlanif20
[SwitchA-Vlanif20] pim sm
[SwitchA-Vlanif20] quit
[SwitchA] interface Vlanif30
[SwitchA-Vlanif30] pim sm
[SwitchA-Vlanif30] quit
[SwitchA] interface Vlanif40
[SwitchA-Vlanif40] pim sm
[SwitchA-Vlanif40] quit
[SwitchA] interface loopback 0
[SwitchA-LoopBack0] pim sm
[SwitchA-LoopBack0] quit
Step 4 Configure an RP on Switch A.
# Configure Loopback0 on Switch A as an RP.
[SwitchA] pim
[SwitchA-pim] c-bsr loopback 0
[SwitchA-pim] c-rp loopback 0
[SwitchA-pim] quit
Step 5 Configure stable-preferred multicast load splitting on Switch E.
[SwitchE] multicast load-splitting stable-preferred
Step 6 Add the host-side interfaces of Switch E to multicast groups in batches.
# Add VLANIF140 to multicast groups from 225.1.1.1 to 225.1.1.3.
[SwitchE] interface Vlanif140
[SwitchE-Vlanif140] igmp static-group 225.1.1.1 inc-step-mask 32 number 3
[SwitchE-Vlanif140] quit
Step 7 Verify the configuration of stable-preferred multicast load splitting.
# The multicast source (10.110.1.1/24) sends multicast data to multicast groups 225.1.1.1 to
225.1.1.3. HostA can receive the multicast data from the multicast source. On Switch E, check
brief information about the PIM routing table.
<SwitchE> display pim routing-table brief
VPN-Instance: public net
Total 3 (*, G) entries; 3 (S, G) entries
Entries Upstream interface NDwnstrms
(*, 225.1.1.1) Vlanif130 1
(10.110.1.1, 225.1.1.1) Vlanif130 1
(*, 225.1.1.2) Vlanif120 1
(10.110.1.1, 225.1.1.2) Vlanif120 1
(*, 225.1.1.3) Vlanif110 1
(10.110.1.1, 225.1.1.3) Vlanif110 1
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 9 IPv4 Multicast Routing Management
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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