Configuration Guide User guide

BigIron RX Series Configuration Guide 945
53-1002484-04
Chapter
29
Configuring IS-IS (IPv4)
In this chapter
•IS-IS overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 945
•IS-IS CLI levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 950
•Configuring IPv4 IS-IS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 951
•Globally configuring IS-IS on a device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 952
•Configuring IPv4 address family route parameters. . . . . . . . . . . . . . . . . . . 958
•Configuring ISIS properties on an interface. . . . . . . . . . . . . . . . . . . . . . . . . 964
•Displaying IPv4 IS-IS information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 968
•Clearing IS-IS information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 980
IS-IS overview
The Intermediate System to Intermediate System (IS-IS) protocol is a link-state Interior Gateway
Protocol (IGP) that is based on the International Standard for Organization/International
Electrotechnical Commission (ISO/IEC) Open Systems Internet Networking model (OSI). In IS-IS, an
intermediate system (router) is designated as either a Level 1 or Level 2 router. A Level 1 router
routes traffic only within the area in which the router resides. A Level 2 router routes traffic
between areas within a routing domain.
The Brocade implementation of IS-IS is based on the following specifications and draft
specifications:
• ISO/IEC 10589 – “Information Technology – Telecommunication and information exchange
between systems – Intermediate system to Intermediate system intra-domain routing
information exchange protocol for use in conjunction with the protocol for providing the
connection less-mode Network Service (ISO 8473)”, 1992
• ISO/IEC 8473 – “Information processing systems – Data Communications – Protocols for
providing the connectionless-mode network service”, 1988
• ISO/IEC 9542 – “Information Technology – Telecommunication and information exchange
between systems – End system to Intermediate system intra-domain routing information
exchange protocol for use in conjunction with the protocol for providing the connection
less-mode Network Service (ISO 8473)”, 1988
• RFC 1195 – “Use of OSI IS-IS for Routing in TCP/IP and Dual Environments”, 1990.
• RFC 2763 – “Dynamic Host Name Exchange Mechanism for IS-IS”, 2000.
• RFC 2966 – “Domain-wide Prefix Distribution with Two-Level IS-IS”, 2000