Huawei quidway s7700 - Checking the Configuration; Adjusting Control Parameters for Prune; Establishing the Configuration Task

An interface sets up neighbor relationships with only the addresses matching the filtering rules
and deletes the neighbors unmatching the filtering rules.
NOTE
When configuring the neighbor filtering function on the interface, you must also configure the neighbor
filtering function correspondingly on the switch that sets up the neighbor relationship with the interface.
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5.5.6 Checking the Configuration
After the neighbor control parameters are adjusted, you can run commands to check information
about the PIM interface and the PIM neighbor.
Procedure
l Run the display pim [ vpn-instance vpn-instance-name | all-instance ] interface
[ interface-type interface-number | up | down ] [ verbose ] command to check PIM on an
interface.
l Run the display pim [ vpn-instance vpn-instance-name | all-instance ] neighbor
[ neighbor-address | interface interface-type interface-number | verbose ]
*
command to
check information about a PIM neighbor.
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5.6 Adjusting Control Parameters for Prune
When the last member leaves a group, the multicast device sends a Prune message upstream,
requesting the upstream device to execute the prune action. If other downstream devices on the
same network segment need the multicast data for this group, they need to send Join messages
to override the prune action.
5.6.1 Establishing the Configuration Task
After basic PIM-DM functions are configured, you can set the period for an interface to keep
the prune state, delay for transmitting Prune messages in a LAN, and interval for overriding the
prune action as required.
Applicable Environment
When the last member leaves its group, the switch sends a Prune message through an upstream
interface. After receiving the Prune message, the upstream switch performs the prune action and
stops sending multicast packets to this network segment. If other downstream switchs exist in
the network, the switchs need to send a Join message to override the prune action.
Switchs can work normally under the control of the default parameter values. Users can adjust
related parameters according to the specific network environment.
NOTE
The configuration involves the following two cases:
l Global configuration: It is valid on each interface.
l Configuration on an interface: The configuration on an interface takes precedence over the global
configuration. If the configuration on an interface is not done, the global configuration is used.
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 5 PIM-DM (IPv4) Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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