Three-Way Handshake for IS-IS Point-to-Point Adjacencies
RFC 5303, “Three-Way Handshake for IS-IS Point-to-Point Adjacencies”, is a Proposed Standard document published in October 2008 by D. Katz, R. Saluja, D. Eastlake 3rd. It obsoletes RFC 3373. The canonical text is published by the RFC Editor.
Abstract
The IS-IS routing protocol (Intermediate System to Intermediate System, ISO 10589) requires reliable protocols at the link layer for point-to-point links. As a result, it does not use a three-way handshake when establishing adjacencies on point-to-point media. This paper defines a backward-compatible extension to the protocol that provides for a three-way handshake. It is fully interoperable with systems that do not support the extension.
Additionally, the extension allows the robust operation of more than 256 point-to-point links on a single router.
This extension has been implemented by multiple router vendors; this paper is provided to the Internet community in order to allow interoperable implementations to be built by other vendors. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 5303 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 5302 Domain-Wide Prefix Distribution with Two-Level IS-IS
- RFC 5304 IS-IS Cryptographic Authentication
- RFC 5301 Dynamic Hostname Exchange Mechanism for IS-IS
- RFC 5305 IS-IS Extensions for Traffic Engineering
- RFC 5306 Restart Signaling for IS-IS
- RFC 5307 IS-IS Extensions in Support of Generalized Multi-Protocol Label Switching
- RFC 5298 Analysis of Inter-Domain Label Switched Path Recovery
- RFC 5308 Routing IPv6 with IS-IS