Establishing The Configuration Task - Huawei Quidway S7700 Configuration Manual - Multicast

Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast

6.6.1 Establishing the Configuration Task

After dynamic RP and basic PIM-SM functions are configured, you can configure BSR
administrative domains as required. Each BSR administrative domain maintains a BSR and
provides services for the multicast groups within a specific address range. Multicast groups that
do not belong to any BSR administrative domain are served by the global domain.
Applicable Environment
This section describes how to configure a BSR administrative domain in the ASM model through
commands.
In the traditional mode, a PIM-SM network maintains only one BSR and all multicast groups in
the network are in the administrative range of the BSR. To better manage the domains, the PIM-
SM network is divided into multiple BSR administrative domains. Each BSR administrative
domain maintains only one BSR that serves specified multicast groups. BSR administrative
domains are geographically isolated. Multicast packets of a BSR administrative domain cannot
pass the border of the domain.
The address of a multicast group served by a BSR administrative domain is valid only in the
BSR administrative domain. The addresses of multicast groups served by different BSR
administrative domains can be identical and these addresses are equal to private multicast group
addresses.
Multicast groups that do not belong to any BSR administrative domain are served by the global
domain. Global domain maintains only one BSR that serves the remaining multicast groups.
Dividing a PIM-SM network into multiple BSR administrative domains and a global domain
effectively reduces the load of a single BSR, and provides a special service for specific multicast
groups.
The switch can work normally under the control of default values. The S7700 allows users to
adjust the parameters.
Pre-configuration Tasks
Before configuring a BSR administrative domain, complete the following tasks:
l
l
Data Preparation
To configure a BSR administrative domain, you need the following data.
No.
1
2
Issue 01 (2011-07-15)
NOTE
Default values are recommended.
Configuring a unicast routing protocol
Configuring Basic PIM-SM Functions
Data
Priority and hash mask length for electing a BSR in a BSR domain
Priority and hash mask length of electing the global domain BSR
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