Configuring Ipv6 Is-Is; Overview; Configuring Basic Ipv6 Is-Is - HP 6125XLG Layer 3 - Ip Routing Configuration Manual

Configuring IPv6 IS-IS

IPv6 IS-IS supports all IPv4 IS-IS features except that it advertises IPv6 routing information. This chapter
describes only IPv6 IS-IS specific configuration tasks. For information about IS-IS, see

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 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 new 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 IPv6 IS-IS.

Configuring basic IPv6 IS-IS

Before you configure basic IPv6 IS-IS, complete the following tasks:
Configure IPv6 addresses for interfaces to ensure IPv6 connectivity between neighboring nodes.
•
• Enable IS-IS.
Basic IPv6 IS-IS configuration can implement the interconnection of IPv6 networks.
To configure basic IPv6 IS-IS:
Step
1. Enter system view.
2. Enable an IS-IS process and
enter IS-IS view.
3. Configure the network entity
title (NET) for the IS-IS
process.
4. Enable IPv6 for the IS-IS
process.
5. Return to system view.
6. Enter interface view.
7. Enable IPv6 for an IS-IS
process on the interface.
Command
system-view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
network-entity net
ipv6 enable
quit
interface interface-type
interface-number
isis ipv6 enable [ process-id ]
396
"Configuring
Remarks
N/A
By default, no IS-IS process is
enabled.
By default, no NET is configured.
The default setting is disabled.
N/A
N/A
The default setting is disabled.
IS-IS."