Configuring Ipv6 Is-Is; Overview; Configuring Basic Ipv6 Is-Is - HP FlexFabric 12900E Series Configuration Manual

Configuring IPv6 IS-IS

Overview

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
"Configuring
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. Create the IPv6 address
family and enter its view.
5. Return to IS-IS view.
6. Return to system view.
7. Enter interface view.
8. Enable IPv6 for IS-IS on the
interface.
IS-IS."
Command
system-view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
network-entity net
address-family ipv6 [ unicast ]
quit
quit
interface
interface-number
isis ipv6 enable [ process-id ]
interface-type
446
Remarks
N/A
By default, no IS-IS process is
enabled.
By default, no NET is configured.
By default, no IS-IS IPv6 address
family exists.
N/A
N/A
N/A
By default, IPv6 is disabled for
IS-IS on an interface.