R0106-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V7)

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Configuring IPv6 IS-IS

In this chapter, "MSR2000" refers to MSR2003. "MSR3000" collectively refers to MSR3012, MSR3024,

MSR3044, MSR3064. "MSR4000" collectively refers to MSR4060 and MSR4080.

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 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 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:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enable an IS-IS process and

enter IS-IS view.

isis [ process-id ] [ vpn-instance

vpn-instance-name ]

By default, no IS-IS process is

enabled.

3. Configure the network entity

title (NET) for the IS-IS process.

network-entity net By default, no NET is configured.

4. Create the IPv6 address family

and enter its view.

address-family ipv6 [ unicast ]

By default, IS-IS IPv6 address

family view is not created.

5. Return to IS-IS view.

quit N/A

6. Return to system view.

quit N/A

7. Enter interface view.

interface interface-type

interface-number

N/A