Configuring Ipv6 Is-Is; Overview; Configuring Basic Ipv6 Is-Is; Configuration Prerequisites - HP MSR Series Configuration Manual

Configuring IPv6 IS-IS

This chapter describes how to configure IPv6 IS-IS, which supports all IPv4 IS-IS features except that it
advertises IPv6 routing information. For information about IS-IS, see "Configuring IS-IS."

Overview

Intermediate System-to-Intermediate System (IS-IS) supports multiple network protocols, including IPv6. To
support IPv6, the IETF added two type-length-values (TLVs) and a new network layer protocol identifier
(NLPID).
The two TLVs are as follows:
IPv6 Reachability—Contains routing prefix and metric information to describe network reachability
•
and has a type value of 236 (0xEC).
IPv6 Interface Address—Same as the "IP Interface Address" TLV in IPv4 ISIS, except that the 32-bit
•
IPv4 address is translated to the 128-bit IPv6 address.
The NLPID is an 8-bit field that identifies which network layer protocol is supported. For IPv6, the NLPID
is 142 (0x8E), which must be carried in hello packets sent by a router that supports IPv6 IS-IS.

Configuring basic IPv6 IS-IS

Basic IPv6 IS-IS configuration can implement the interconnection of IPv6 networks.

Configuration prerequisites

Before you configure basic IPv6 IS-IS, complete the following tasks:
Enable IPv6 globally.
•
Configure IP addresses for interfaces, and make sure that all neighboring nodes can reach each
•
other.
• Enable IS-IS.

Configuration procedure

To configure basic IS-IS:
Step
1. Enter system view.
2. Enable an IS-IS process and
enter IS-IS view.
3. Configure the network entity
title for the IS-IS process.
4. Enable IPv6 for the IS-IS
process.
5. Return to system view.
Command
system-view
isis [ process-id ]
network-entity net
ipv6 enable
quit
328
Remarks
N/A
Not enabled by default.
Not configured by default.
Disabled by default.
N/A