[SwitchC-Vlanif300] quit
[SwitchC] interface vlanif 100
[SwitchC-Vlanif100] pim sm
[SwitchC-Vlanif100] quit
Step 3 Configure the static RP.
# Configure the static RP on SwitchA, SwitchB, and SwitchC. The configurations of SwitchB
and SwitchC are similar to configuration of SwitchA, and are not provided here.
[SwitchA] pim
[SwitchA-pim] static-rp 192.168.1.1
Step 4 Configure the threshold of the SPT switchover.
# Configure SwitchC to perform the SPT switchover when the transmission rate of multicast
packets reaches 1024 kbit/s.
[SwitchC] pim
[SwitchC-pim] spt-switch-threshold 1024
[SwitchC-pim] quit
Step 5 Verify the configuration.
# The multicast source begins to send data to the multicast group, and HostA can receive the
data from the source. When the rate is smaller than 1024 kbit/s, you can run the display pim
routing-table command to view the PIM multicast routing table on SwitchC. You can find that
the upstream neighbor is SwitchA. The displayed information is as follows:
<SwitchC> display pim routing-table
VPN-Instance: public net
Total 1 (*, G) entry; 1 (S, G) entry
(*, 225.1.1.1)
RP: 192.168.1.1
Protocol: pim-sm, Flag: WC
UpTime: 00:13:46
Upstream interface: vlanif100
Upstream neighbor: 192.168.1.1
RPF neighbor: 192.168.1.1
Downstream interface(s) information:
Total number of downstreams: 1
1: vlanif102
Protocol: igmp, UpTime: 00:13:46, Expires:-
(10.110.5.100, 225.1.1.1)
RP: 192.168.1.1
Protocol: pim-sm, Flag: ACT
UpTime: 00:00:42
Upstream interface: vlanif100
Upstream neighbor: 192.168.1.1
RPF neighbor: 192.168.1.1
Downstream interface(s) information:
Total number of downstreams: 1
1: vlanif102
Protocol: pim-sm, UpTime: 00:00:42, Expires:-
# When the rate is higher than 1024 kbit/s, you can run the display pim routing-table command
to view the PIM multicast routing table on SwitchC. You can find that the upstream neighbor is
SwitchB. The displayed information is as follows:
<SwitchC> display pim routing-table
VPN-Instance: public net
Total 1 (*, G) entry; 1 (S, G) entry
(*, 225.1.1.1)
RP: 192.168.1.1
Protocol: pim-sm, Flag: WC
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 6 PIM-SM (IPv4) Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
208
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