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 Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." 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 Manral Expires September 30, 2012 [Page 1] Internet-Draft LMP Test Message MPLS-TP March 2012 publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. 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 Manral Expires September 30, 2012 [Page 2] Internet-Draft LMP Test Message MPLS-TP March 2012 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: Manral Expires September 30, 2012 [Page 3] Internet-Draft LMP Test Message MPLS-TP March 2012 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 Manral Expires September 30, 2012 [Page 4] Internet-Draft LMP Test Message MPLS-TP March 2012 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: Manral Expires September 30, 2012 [Page 5]