Multiprotocol Label Switching (MPLS) Forwarding Equivalence Class To Next Hop Label Forwarding Entry (FEC-To-NHLFE) Management Information Base (MIB)
RFC 3814
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(June 2004; No errata)
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RFC 3814 (Proposed Standard)
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Network Working Group T. Nadeau
Request for Comments: 3814 Cisco Systems, Inc.
Category: Standards Track C. Srinivasan
Bloomberg L.P.
A. Viswanathan
Force10 Networks, Inc.
June 2004
Multiprotocol Label Switching (MPLS) Forwarding Equivalence
Class To Next Hop Label Forwarding Entry (FEC-To-NHLFE)
Management Information Base (MIB)
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2004).
Abstract
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it describes managed objects for defining,
configuring, and monitoring Forwarding Equivalence Class (FEC) to
Next Hop Label Forwarding Entry (NHLFE) mappings and corresponding
actions for use with Multiprotocol Label Switching (MPLS).
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology. . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Conventions Used In This Document. . . . . . . . . . . . . . . 3
4. The Internet-Standard Management Framework . . . . . . . . . . 3
5. Outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5.1. mplsFTNTable . . . . . . . . . . . . . . . . . . . . . . 4
5.1.1. Advantages of Address Ranges Over CIDR Prefixes. 4
5.2. mplsFTNMapTable. . . . . . . . . . . . . . . . . . . . . 5
5.2.1. Indexing Requirements. . . . . . . . . . . . . . 5
5.2.2. How the Current Indexing Works . . . . . . . . . 5
5.3. mplsFTNPerfTable . . . . . . . . . . . . . . . . . . . . 7
6. Avoiding Retrieval-Modification Interactions . . . . . . . . . 7
Nadeau, et al. Standards Track [Page 1]
RFC 3814 MPLS FTN MIB June 2004
7. Example Illustrating MIB Module Components . . . . . . . . . . 8
7.1. Sample FTN Rules . . . . . . . . . . . . . . . . . . . . 8
7.2. Creating FTN Entries and Applying them to Interfaces . . 9
7.3. Mapping an FTN Entry to Multiple Interfaces. . . . . . . 10
7.4. Inserting an Entry Into Existing List. . . . . . . . . . 11
7.5. Pictorial Tabular Relationship . . . . . . . . . . . . . 13
7.6. Deleting an Entry. . . . . . . . . . . . . . . . . . . . 14
8. The Use of RowPointer. . . . . . . . . . . . . . . . . . . . . 16
9. MPLS-FTN-STD-MIB Definitions . . . . . . . . . . . . . . . . . 16
10. Security Considerations. . . . . . . . . . . . . . . . . . . . 38
11. IANA Considerations. . . . . . . . . . . . . . . . . . . . . . 39
11.1. IANA Considerations for MPLS-FTN-STD-MIB . . . . . . . . 39
12. References . . . . . . . . . . . . . . . . . . . . . . . . . . 39
12.1. Normative References . . . . . . . . . . . . . . . . . . 39
12.2. Informative References . . . . . . . . . . . . . . . . . 40
13. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 41
14. Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 41
15. Full Copyright Statement . . . . . . . . . . . . . . . . . . . 42
1. Introduction
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it describes managed objects for specifying Forwarding
Equivalence Class (FEC) to Next Hop Label Forwarding Entry (NHLFE)
mappings and corresponding actions for Multiprotocol Label Switching
(MPLS).
At the ingress of an MPLS network, packets entering the MPLS domain
are assigned to an FEC. Those packets belonging to an FEC are
associated with an NHLFE (i.e., MPLS label) via the FEC-to-NHLFE
(FTN) mapping [RFC3031]. This relationship defines how ingress LSRs
will impose MPLS labels onto incoming packets. It also defines how
egress LSRs will decapsulate the MPLS shim header from MPLS packets.
Conceptually, some of the FTN table functionality could be
implemented using the Forwarding Information Base (FIB) to map all
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