GROW J. Scudder
Internet-Draft Juniper Networks
Updates: 7854 (if approved) December 14, 2018
Intended status: Standards Track
Expires: June 17, 2019

BMP Peer Up Message Namespace


RFC 7854, BMP, uses different message types for different purposes. Most of these are Type, Length, Value (TLV) structured. One message type, the Peer Up message, lacks a set of TLVs defined for its use, instead sharing a namespace with the Initiation message. Subsequent experience has shown that this namespace sharing was a mistake, as it hampers the extension of the protocol.

This document updates RFC 7854 by creating an independent namespace for the Peer Up message. The changes in this document are formal only, compliant implementations of RFC 7854 also comply with this specification.

Status of This Memo

This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79.

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This Internet-Draft will expire on June 17, 2019.

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Table of Contents

1. Introduction

[RFC7854] defines a number of different BMP message types. With the exception of the Route Monitoring message type, these messages are TLV-structured. Most message types have distinct namespaces and IANA registries. However, the namespace of the Peer Up message overlaps that of the Initiation message. As the BMP protocol has been extended, this oversight has become problematic. In this document, we create a distinct namespace for the Peer Up message to eliminate this overlap, and create the corresponding missing registry.

The changes in this document are formal only, compliant implementations of [RFC7854] also comply with this specification.

1.1. Requirements Language

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here.

2. String Definition

A string TLV is a free-form sequence of UTF-8 characters whose length is given by the TLV's Length field. There is no requirement to terminate the string with a null (or any other particular) character -- the Length field gives its termination.

3. Changes to RFC 7854

We update [RFC7854] as follows:

Other than as summarized above, and detailed below, there are no other changes.

3.1. Revision to Information TLV, Renamed as Initiation Information TLV

The Information TLV defined in section 4.4 of [RFC7854] is renamed "Initiation Information TLV". It is used only by the Initiation message, not by the Peer Up message.

The definition of Type = 0 is revised to be:

3.2. Revision to Peer Up Notification

The final paragraph of section 4.10 of [RFC7854] references the Information TLV (which is revised above). That paragraph is replaced by the following:

3.3. Definition of Peer Up Information TLV

The Peer Up Information TLV is used by the Peer Up message.

0 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
|          Information Type     |       Information Length      |
|                 Information (variable)                        |
~                                                               ~

4. IANA Considerations

IANA is requested to create a registry within the BMP group, named "BMP Peer Up Message TLVs", reference this document.

Registration procedures for this registry are:

Range Registration Procedures
0-32767 Standards Action
32768-65530 First Come, First Served
65531-65534 Experimental
65535 Reserved

Initial values for this registry are:

Type Description Reference
0 String this document
65535 Reserved this document

5. Security Considerations

This rearrangement of deck chairs does not change the underlying security issues inherent in the existing [RFC7854].

6. Acknowledgements


7. Normative References

[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997.
[RFC7854] Scudder, J., Fernando, R. and S. Stuart, "BGP Monitoring Protocol (BMP)", RFC 7854, DOI 10.17487/RFC7854, June 2016.
[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, May 2017.

Author's Address

John Scudder Juniper Networks 1194 N. Mathilda Ave Sunnyvale, CA 94089 USA EMail: