join-prune max-packet-length (IPv4)

Function

The join-prune max-packet-length command sets the maximum size of each PIM-SM Join/Prune message to be sent.

The undo join-prune max-packet-length command restores the default maximum size of each PIM-SM Join/Prune message to be sent.

By default, the maximum length of Join/Prune message sent by PIM-SM is 8100 bytes.

Format

join-prune max-packet-length packet-length

undo join-prune max-packet-length

Parameters

Parameter	Description	Value
packet-length	Specifies the maximum size of each PIM-SM Join/Prune message to be sent.	The value is an integer ranging from 100 to 8100, in bytes.

Views

PIM view of public network instance or PIM view of VPN instance

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

If the peer device has low performance and takes a long time to process a large Join/Prune message carrying a lot of (S, G) entries, the maximum size of each Join/Prune message can be reduced to relieve the burden on the peer device.

Prerequisites

IP multicast routing has been enabled using the multicast routing-enable command.

Precautions

This command is valid for PIM-SM and PIM-DM.

If the maximum size specified in the join-prune max-packet-length command is greater than the interface MTU, the maximum size of each message to be sent is equal to the interface MTU.

Example

# Set the maximum size of each Join/Prune message to be sent to 2100 bytes.

<HUAWEI> system-view
[HUAWEI] multicast routing-enable
[HUAWEI] pim
[HUAWEI-pim] join-prune max-packet-length 2100