Huawei Quidway NetEngine80E Configuration Manual page 633

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
IS-IS device does not receive any Hello packets from the neighboring device within the specified
period (called the holding time). A failure in an IS-IS neighboring device will trigger LSP
flooding and SPF calculation, after which IS-IS routes are reconverged.
To speed up fault detection, use the following methods to accelerate the speed of detecting IS-
IS neighboring device failures:
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Procedure
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Issue 02 (2014-09-30)
Set an interval at which Hello packets are sent.
Set the holding multiplier for neighboring devices.
Configuring Dynamic IPv6 BFD for IS-IS.
NOTE
Configuring IPv6 BFD for IS-IS is recommended because this method provides a faster fault detection
speed than the other two methods.
Set an interval at which Hello packets are sent.
1. Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
The interface view is displayed.
3. Run:
isis timer hello hello-interval [ level-1 | level-2 ]
The interval at which Hello packets are sent is set.
NOTE
A broadcast link can transmit both Level-1 and Level-2 Hello packets. You can set different
sending intervals for these two types of Hello packets. By default, both Level-1 and Level-2
Hello packets are sent.
A P2P link can transmit only one type of Hello packets. Therefore, there is no need to specify
the level-1 or level-2 parameter if a P2P link is used.
Set the holding multiplier for neighboring devices.
1. Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
The interface view is displayed.
3. Run:
isis timer holding-multiplier number [ level-1 | level-2 ]
The holding multiplier of neighboring devices is set.
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