Huawei Quidway NetEngine80E Configuration Manual page 753

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
Figure 7-19 Networking diagram of dynamic BFD for IPv6 IS-IS
Router S
It is required to configure BFD for IPv6 IS-IS so that traffic between Router S and Router D can
be rapidly switched to the backup path when the primary path or Switch fails.
Configuration Roadmap
The configuration roadmap is as follows:
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Data Preparation
To complete the configuration, you need the following data:
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Procedure
Step 1 Enable IPv6 forwarding capability and configure an IPv6 address for each interface.
# The configurations of Router S are taken as an example. The configurations of other routers
are as the same as those of Router S and thus are not mentioned here.
<HUAWEI> system-view
[HUAWEI] sysname RouterS
[RouterS] ipv6
Issue 02 (2014-09-30)
GE1/0/0
2001:db8:1::1/64
Configure basic IS-IS IPv6 functions on each router to ensure the IPv6 connectivity.
Adjust the IS-IS cost values of interfaces on each router so that the path Router S-->Switch--
>Router D becomes the primary path, and the path Router S-->Router N-->Router D
becomes the backup path.
Configure BFD globally on each router.
Enable BFD for IPv6 IS-IS in the IS-IS view of each router.
IS-IS process ID
IS-IS network entity title (NET)
Level of each Router
IS-IS cost value of each interface
Interface to be enabled with BFD for IPv6 IS-IS
Minimum interval for sending BFD packets, minimum interval for receiving BFD packets,
and local BFD detection multiplier
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Switch
GE1/0/0
2001:db8:1::2/64
Primary path
Backup path
Router N
7 IS-IS Configuration
Router D
GE3/0/0
2001:db8:4::1/64
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