Huawei Quidway S7700 Configuration Manual - Multicast page 346

Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast
Context
Configurations related to VPN instances are applicable only to the PE switch. When configuring
load splitting among multicast routes for a VPN instance on a PE, perform the configuration in
the VPN instance. In other cases, load balancing among multicast routes is configured in the
public network instance.
The multicast load splitting function extends multicast routing rules, which does not fully depend
on the RPF check. If multiple equal-cost optimal routes exist over the network, they all can be
used for multicast data forwarding and multicast traffic is load split among multiple equal-cost
routes.
By default, load splitting is not performed.
Do as follows on the multicast router switch:
Procedure
l
Issue 01 (2011-07-15)
CAUTION
Public network instance
1. Run:
system-view
The system view is displayed.
2. Run:
multicast load-splitting { balance-preferred | stable-preferred | source
| group | source-group }
Multicast load balancing is configured. The parameters of the command are explained
as follows:
– balance-preferred: indicates balance-preferred load splitting. This policy is
applicable to the scenario where hosts frequently join or leave the groups, which
requires automatic load adjustment.
If balance-preferred is specified, the switch automatically adjusts and balances
the entries on the equal-cost routes when equal-cost routes are added or deleted,
IPv4 multicast routing entries are deleted, or IPv4 load splitting weights on the
interfaces are changed.
– stable-preferred: indicates stable-preferred load splitting. This policy is
applicable to the stable multicast networking.
If stable-preferred is specified, the switch automatically adjusts and balances the
entries when equal-cost routes are added or deleted; however, when IPv4 multicast
routing entries are deleted or load splitting weights on the interfaces are changed,
the switch does not automatically adjust the entries on the equal-cost routes.
– group: indicates group address-based load splitting. This policy is applicable to
the scenario of one source to multiple groups.
– source: indicates source address-based load splitting. This policy is applicable to
the scenario of one group to multiple sources.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
9 IPv4 Multicast Routing Management
327