After the period expires, the pruned interface continues to forward packets. Before
the period expires, the switch resets the Holdtime timer after receiving a State-Refresh
message.
----End
12.6.3 Configuring the Delay for Transmitting Prune Messages in a
LAN
The delay for transmitting Prune messages in a LAN can be set either globally or on an interface.
When the values of lan-delay on all devices along the same link are different, the maximum
value of these values is preferred.
Context
The Hello message carries lan-delay and the override-interval. The relationship between lan-
delay, override-interval, and Prune-Pending Timer (PPT) is that lan-delay + override-interval =
PPT. 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 on the downstream interface. If the switch receives a Join message from a
downstream switch within the PPT, the switch does not perform the prune action.
Do as follows on the PIM-DM switch:
NOTE
The configuration of control parameters for Prune 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.
Procedure
l Global Configuration
1. Run:
system-view
The system view is displayed.
2. Run:
pim-ipv6
The PIM-IPv6 view is displayed.
3. Run:
hello-option lan-delay interval
The delay for transmitting messages in a LAN is set.
l Configuration on an Interface
1. Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 12 PIM-DM (IPv6) Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
430
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