Canonical URL:

https://www.rfc-editor.org/rfc/rfc6720.txt

File formats:

Status:

PROPOSED STANDARD

Updates:

RFC 5036

Updated by:

RFC 7552

Authors:

C. Pignataro
R. Asati

Stream:

IETF

Source:

mpls (rtg)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC6720

Discuss this RFC: Send questions or comments to mpls@ietf.org

Other actions: Submit Errata  |  Find IPR Disclosures from the IETF

Abstract

The Generalized TTL Security Mechanism (GTSM) describes a generalized use of a packet's Time to Live (TTL) (IPv4) or Hop Limit (IPv6) to verify that the packet was sourced by a node on a connected link, thereby protecting the router\'s IP control plane from CPU utilization-based attacks. This technique improves security and is used by many protocols. This document defines the GTSM use for the Label Distribution Protocol (LDP).

This specification uses a bit reserved in RFC 5036 and therefore updates RFC 5036. [STANDARDS-TRACK]

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.

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