HP VPN Firewall Appliances Network Management Configuration Guide

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Configuring IPv6 IS-IS
The term "router" in this document refers to both routers and routing-capable firewalls and firewall
modules.
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."
IPv6 IS-IS can be configured only at the CLI.
Feature and hardware compatibility
Hardware IPv6 IS-IS com
p
atibilit
y
F1000-A-EI/F1000-S-EI No
F1000-E No
F5000 Yes
F5000-S/F5000-C No
VPN firewall modules No
20-Gbps VPN firewall modules No
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: