6.7.6 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 a PIM neighbor.
----End
6.8 Adjusting Control Parameters for Source Registering
In a PIM-SM network, the DR directly connected to the multicast source encapsulates multicast
data in a Register message and sends it to the RP in unicast mode. The RP then decapsulates the
message, and forwards the multicast data to receivers along the RPT. The system supports the
Register message filtering and suppression functions.
6.8.1 Establishing the Configuration Task
After basic functions of PIM-SM are configured, you can configure filtering policies and the
checksum method for Register messages and configure PIM-SM Register suppression as
required.
Applicable Environment
This section describes how to configure the control parameters of the source registering through
commands.
In a PIM-SM network, the DR directly connected to the source S encapsulates multicast data in
a Register message and sends it to the RP in unicast mode. The RP then decapsulates the message,
and forwards it along the RPT.
After the SPT switchover on the RP is complete, the multicast data reaches the RP along the
SPT tree in the multicast mode. The RP sends a Register-stop message to the DR at the source
side. The SDR stops sending Register messages and enters the suppressed state. During the
register suppression, the SDR periodically sends null-register packets to inform that the source
is still in the active state. After the timeout of the register suppression, the SDR starts to send
Register message again.
The switch can work normally under the control of default values. The S7700 allows the users
to adjust the parameters as required.
NOTE
It is recommended to adopt default values if there is no special requirement.
Pre-configuration Tasks
Before adjusting control parameters for source registering, complete the following tasks:
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 6 PIM-SM (IPv4) Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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