Adjusting Control Parameters For State-Refresh; Establishing The Configuration Task; Disabling State-Refresh - Huawei Quidway s3700 series Configuration Manual

Quidway S3700 Series Ethernet Switches
Configuration Guide - Multicast

6.7 Adjusting Control Parameters for State-Refresh

In a PIM-DM network, the periodic flooding-pruning wastes lots of network resources. To
prevent the pruned interface from forwarding messages because the prune timer times out, you
can enable the State-Refresh function. The multicast device then sends State-Refresh messages
periodically to refresh the prune state of the interface and maintain the SPT.

6.7.1 Establishing the Configuration Task

After basic functions of PIM-DM are configured, you can set the interval for sending State-
Refresh messages, period for waiting to receive the next State-Refresh message, and TTL value
carried in the State-Refresh message as required.
Applicable Environment
In a PIM-DM network, periodical flooding-prune wastes a lot of network resources. To prevent
a pruned interface from forwarding packets, you can enable the State-Refresh function.
Switch periodically send State-Refresh messages to refresh the prune state of interfaces and
maintain the SPT.
Switchs can work normally under the control of the default parameter values. Users can adjust
related parameters according to the specific network environment.
Pre-configuration Tasks
Before adjusting control parameters for State-Refresh, complete the following tasks:
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Data Preparation
To adjust control parameters for State-Refresh, you need the following data.
No.
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6.7.2 Disabling State-Refresh

After this function is disabled on the interface, the interface cannot forward any State-Refresh
messages.
Issue 01 (2011-10-26)
NOTE
If there is no specific requirement, default values are recommended.
Configuring a unicast routing protocol
Configuring Basic PIM-DM Functions
Data
Interval for sending PIM State-Refresh messages
Period for waiting to receive the next State-Refresh message
TTL value for forwarding State-Refresh messages
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6 PIM-DM (IPv4) Configuration
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