RFC 3472 (rfc3472) - Page 2 of 23
Generalized Multi-Protocol Label Switching (GMPLS) Signaling Constraint-based Routed Label Distribution Protocol (CR-LDP) Extensions
Alternative Format: Original Text Document
RFC 3472 GMPLS Signaling - CR-LDP Extensions January 2003
6. Protection TLV ............................................ 10
6.1 Procedures .............................................. 11
7. Administrative Status Information ......................... 11
7.1 Admin Status TLV ........................................ 11
7.2 REQUEST and MAPPING Message Procedures .................. 12
7.3 Notification Message Procedures ......................... 13
8. Control Channel Separation ................................ 14
8.1 Interface Identification ................................ 14
8.2 Errored Interface Identification ........................ 15
9. Fault Handling ......................................... 17
10 Acknowledgments ........................................... 17
11. Security Considerations ................................... 17
12. IANA Considerations ....................................... 17
13. Intellectual Property Considerations ...................... 18
14. References ................................................ 18
14.1 Normative References ................................... 18
14.2 Informative References ................................. 19
15. Contributors .............................................. 19
16. Editors' Addresses ........................................ 22
17. Full Copyright Statement ................................... 23
1. Introduction
Generalized MPLS extends MPLS from supporting packet (PSC) interfaces
and switching to include support of three new classes of interfaces
and switching: Time-Division Multiplex (TDM), Lambda Switch (LSC) and
Fiber-Switch (FSC). A functional description of the extensions to
MPLS signaling needed to support the new classes of interfaces and
switching is provided in [RFC 3471]. This document presents CR-LDP
specific formats and mechanisms needed to support all four classes of
interfaces. RSVP-TE extensions can be found in [RFC 3473].
[RFC 3471] should be viewed as a companion document to this document.
The format of this document parallels [RFC 3471]. It should be noted
that the RSVP-TE specific version of Generalized MPLS includes RSVP
specific support for rapid failure notification, see Section 4
[RFC 3473]. For CR-LDP there is not currently a similar mechanism.
When a failure is detected it will be propagated with
RELEASE/WITHDRAW messages radially outward from the point of failure.
Resources are to be released in this phase and actual resource
information may be fed back to the source using a feedback
mechanisms.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC 2119].
Ashwood-Smith & Berger Standards Track