Huawei quidway s7700 - Configuring Control Parameters for Prune

The interval for holding the forwarding state of a downstream interface is set.
5. Run:
pim require-genid
The Generation ID option is contained in a received Hello message. The Hello message
without the Generation ID option is rejected.
By default, the switch handles the Hello message without the Generation option.
The change of the Generation ID in the Hello message received from an upstream
neighbor indicates that the upstream neighbor is lost or the status of the upstream
neighbor has changed. The switch immediately sends the Join/Prune message to the
upstream switch to refresh the status.
----End
6.9.3 Configuring Control Parameters for Prune
The control parameters for prune can be set either globally or on an interface. The parameters
specify the delay for transmitting messages in a LAN and the interval for overriding the Prune
action.
Context
Do as follows on the PIM-SM switch:
NOTE
The configuration involves the following cases:
l Global Configuration: It is valid on all the interfaces.
l Configuration on the 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.
Procedure
l Global Configuration
1. Run:
system-view
The system view is displayed.
2. Run:
pim [ vpn-instance vpn-instance-name ]
The PIM view is displayed.
3. Run:
hello-option lan-delay interval
The delay for transmitting messages in a LAN is set.
A Hello message carries lan-delay and override-interval . PPT indicates the delay
from the time when a switch receives the Prune message from a downstream interface
to the time when the switch performs the prune action to suppress the forwarding of
the downstream interface. The PPT is obtained by the lan-delay plus override-interval.
If the switch receives a Join message from a downstream switch within the PPT, the
switch does not perform the prune action.
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.
177