Configuring Ipv6 Is-Is Route Selection - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
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7.13 Configuring IPv6 IS-IS Route Selection

Configuring IS-IS route selection can achieve refined control over route selection.
7.13.1 Before You Start
Before configuring IPv6 IS-IS route selection, familiarize yourself with the usage scenario,
complete the pre-configuration tasks, and obtain the data required for the configuration.
Applicable Environment
After basic IPv6 IS-IS functions are configured, IS-IS routes will be generated, enabling
communication between different nodes on a network.
If multiple routes are available, a route discovered by IS-IS may not the optimal route. This does
not meet network planning requirements nor facilitates traffic management. Therefore, configure
IPv6 IS-IS route selection to implement refined control over route selection.
To implement refined control over IPv6 IS-IS route selection, perform the following operations:
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Pre-configuration Tasks
Before configuring IPv6 IS-IS route selection, complete the following tasks:
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Data Preparation
To configure the IPv6 IS-IS route selection, you need the following data.
Issue 02 (2014-09-30)
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Flags: D-Direct, A-Added to URT, L-Advertised in LSPs, S-IGP Shortcut,
Configuring the IPv6 IS-IS
NOTE
Changing the IS-IS cost for an interface can achieve the function of controlling route selection, but
requires routes on the interface to be recalculated and reconverged when a network topology changes,
especially on a large-scale network. In addition, the configuration result may not meet your
expectation.
Therefore, the configuration of changing IS-IS costs has best to be finished when configuring basic
IS-IS functions.
Configure IPv6 IS-IS route leaking.
Configure principles for using equal-cost IPv6 IS-IS routes.
Filter IPv6 IS-IS routes.
Configure an overload bit for an IPv6 IS-IS device.
Configuring the link layer protocol on interfaces.
Configuring IP addresses for interfaces to ensure that neighboring nodes are reachable at
the network layer.
Configuring Basic IPv6 IS-IS
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7 IS-IS Configuration
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