Internet DRAFT - draft-manral-mpls-tp-lmp-test
draft-manral-mpls-tp-lmp-test
Network Working Group V. Manral
Internet-Draft Hewlett Packard Co.
Intended status: Standards-Track March 30, 2012
Expires: September 30, 2012
Encapsulating LMP Test message over MPLS-TP
draft-manral-mpls-tp-lmp-test-02
Abstract
LMP Test Message is transmitted over the Data Link and is used to
verify the data link connectivity. In most cases these messages are
transmitted over UDP. This document clarifies the use of LMP Test
messages over MPLS LSP's when the IP addressing of test messages may
not be available or may not be desireable.
Requirements Language
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 [RFC2119].
Status of this Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
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This Internet-Draft will expire on September 30, 2012.
Copyright Notice
Copyright (c) 2010 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. LMP Test message over ACH for LSP's . . . . . . . . . . . . . . 3
3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 4
4. Security Considerations . . . . . . . . . . . . . . . . . . . . 4
5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 4
6. References . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6.1. Normative References . . . . . . . . . . . . . . . . . . . 5
6.2. Informative References . . . . . . . . . . . . . . . . . . 5
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 5
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1. Introduction
Except for LMP test messages all other LMP messages are sent in the
control channel over UDP encapsulation as defined in RFC 4204
[RFC4204]. The test messages are sent over the individual data links
and can be used for data plane discovery, interface_id exchange and
physical connectivity verification.
In certain MPLS-TP deployment scenarios IP addressing might not be
available in the data plane or it may be preferred to use non-IP
encapsulation for LMP-Test packets.
To enable re-use of LMP Test techniques provided by LMP in such
networks, rest of this document defines extensions to LMP Test
messages and procedures for using LMP for the same.
2. LMP Test message over ACH for LSP's
RFC5586 [RFC5586] defines an ACH mechanism for MPLS LSPs. This
document defines a new ACH channel type for LMP Test messages, when
IP addressing is not in use in the data plane, for LMP Test message
over associated bi-directional LSPs and co-routed bi-directional
LSPs.
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 1|Version| Reserved | LMP-Test Channel Type |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure 1: LMP-Test ACH Channel Type
When ACH header is used, an LMP-Test packet will look as follows:
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0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| MPLS Label stack |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| GAL |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 1|Version| Reserved | LMP-Test Channel Type |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ACH TLVs |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| LMP-Test payload |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure 2: LMP-Test packet with ACH
3. IANA Considerations
A new Channel type is defined in Section 2.1. IANA is requested to
assign a new value from the "PW Associated Channel Type" registry, as
per IETF consensus policy.
Value Meaning
----- -------
TBD Associated Channel carries LMP-Test packet
4. Security Considerations
This document raises no new security issues.
5. Acknowledgements
This document derives a lot of its text and content from "LSP-Ping
and BFD encapsulation over ACH" draft and the authors of that are
duly acknowledged.
6. References
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6.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC4204] Lang, J., "Link Management Protocol (LMP)", RFC 4204,
October 2005.
[RFC5586] Bocci, M., Vigoureux, M., and S. Bryant, "MPLS Generic
Associated Channel", RFC 5586, June 2009.
6.2. Informative References
[RFC2205] Braden, B., "Resource ReSerVation Protocol (RSVP) --
Version 1 Functional Specification", September 1997.
Author's Address
Vishwas Manral
Hewlett-Packard Co.
19111 Pruneridge Ave.
Cupertino, CA 95014
USA
Phone: 408-447-0000
Fax:
Email: vishwas.manral@hp.com
URI:
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