(*, G) and (S, G) entries are evenly distributed to the three equal-cost routes, with the upstream
interfaces being VLANIF130, VLANIF120, and VLANIF110.
NOTE
The load splitting algorithm processes (*, G) and (S, G) entries separately with the same processing rule.
Step 8 Set different multicast load splitting weights for upstream interfaces of Switch E to ensure that
multicast traffic is distributed unevenly.
# Set the multicast load splitting weight on VLANIF110 to 2.
[SwitchE] interface Vlanif110
[SwitchE-Vlanif110] multicast load-splitting weight 2
[SwitchE-Vlanif110] quit
# Set the multicast load splitting weight on VLANIF130 to 0.
[SwitchE] interface Vlanif130
[SwitchE-Vlanif130] multicast load-splitting weight 0
[SwitchE-Vlanif130] quit
Step 9 Add the host-side interfaces of SwitchE to multicast groups in batches.
# Add VLANIF140 to multicast groups from 225.1.1.4 to 225.1.1.9.
[SwitchE] interface Vlanif140
[SwitchE-Vlanif140] igmp static-group 225.1.1.4 inc-step-mask 32 number 6
[SwitchE-Vlanif140] quit
Step 10 Verify the configuration of uneven multicast load splitting.
# The multicast source (10.110.1.1/24) sends multicast data to multicast groups 225.1.1.1 to
225.1.1.9. 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 9 (*, G) entries; 9 (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
(*, 225.1.1.4) Vlanif110 1
(10.110.1.1, 225.1.1.4) Vlanif110 1
(*, 225.1.1.5) Vlanif110 1
(10.110.1.1, 225.1.1.5) Vlanif110 1
(*, 225.1.1.6) Vlanif110 1
(10.110.1.1, 225.1.1.6) Vlanif110 1
(*, 225.1.1.7) Vlanif120 1
(10.110.1.1, 225.1.1.7) Vlanif110 1
(*, 225.1.1.8) Vlanif110 1
(10.110.1.1, 225.1.1.8) Vlanif120 1
(*, 225.1.1.9) Vlanif110 1
(10.110.1.1, 225.1.1.9) Vlanif110 1
The upstream interfaces of existing (*, G) and (S, G) entries remain unchanged. The multicast
load splitting weight of VLANIF110 is greater than that of VLANIF120; therefore, the newly
generated entries with the upstream interface being VLANIF110 are more than those with the
upstream interface being VLANIF120. The multicast load splitting weight of VLANIF130 is 0,
indicating that VLANIF130 does not load balance new entries.
----End
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.
351
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