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RFC 3443

"Time To Live (TTL) Processing in Multi-Protocol Label Switching (MPLS) Networks", January 2003

Canonical URL:
http://www.rfc-editor.org/rfc/rfc3443.txt
This document is also available in this non-normative format: PDF.
Status:
PROPOSED STANDARD
Updates:
RFC 3032
Updated by:
RFC 5462
Authors:
P. Agarwal
B. Akyol
Stream:
IETF
Source:
mpls (rtg)

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Abstract

This document describes Time To Live (TTL) processing in hierarchical Multi-Protocol Label Switching (MPLS) networks and is motivated by the need to formalize a TTL-transparent mode of operation for an MPLS label-switched path. It updates RFC 3032, "MPLS Label Stack Encoding". TTL processing in both Pipe and Uniform Model hierarchical tunnels are specified with examples for both "push" and "pop" cases. The document also complements RFC 3270, "MPLS Support of Differentiated Services" and ties together the terminology introduced in that document with TTL processing in hierarchical MPLS networks. [STANDARDS-TRACK]


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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