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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  |  BibTeX

DOI:  https://doi.org/10.17487/RFC6720

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Abstract

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

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

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.