Huawei quidway s7700 - Configuring the Multicast Routing Policy; Establishing the Configuration Task; Configuring Longest Match of Multicast Route

l Run the display multicast [ vpn-instance vpn-instance-name | all-instance ] rpf-info
source-address [ group-address ] [ rpt | spt ] command to check RPF routing information
of a specified multicast source.
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9.4 Configuring the Multicast Routing Policy
Configuring a multicast routing policy involves configuring the longest match of the multicast
route, configuring multicast load splitting, and setting a multicast load splitting weight.
9.4.1 Establishing the Configuration Task
Before configuring multicast routing policies, familiarize yourself with the applicable
environment, pre-configuration tasks, and required data. This can help you complete the
configuration task quickly and accurately.
Applicable Environment
If multiple equal-cost unicast routes exist when a multicast switch select an upstream interface,
you can configure the switch to the RPF switch by using one of the following methods:
l By default, the switch chooses the route with the largest next-hop address.
l According to the longest match rules, you can configure the switch to select the route with
the destination address that longest matches the address of the source of the packet.
l You can configure load splitting among these switchs. Performing load splitting of
multicast traffic according to different policies can optimize network traffic when multiple
multicast data flows exist.
Pre-configuration Tasks
Before configuring the multicast routing policy, complete the following tasks:
l Configuring a unicast routing protocol
l Configuring basic multicast functions
Data Preparation
To configure the multicast routing policy, you need the following data.
No.
Data
1 Multicast load splitting policy
2 Multicast load splitting weight on the interface
9.4.2 Configuring Longest Match of Multicast Route
If the longest match principle is configured for route selection, a multicast device prefers the
route with the longest matched mask. If the mask lengths of multiple routes are the same, the
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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