Proxy MPLS Echo Request
draft-ietf-mpls-proxy-lsp-ping-00
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2013-07-05
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draft-lim-mpls-proxy-lsp-ping
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Network Working Group G. Swallow
Internet-Draft V. Lim
Intended status: Standards Track Cisco Systems
Expires: January 06, 2014 S. Aldrin
Huawei Technologies
July 05, 2013
Proxy MPLS Echo Request
draft-ietf-mpls-proxy-lsp-ping-00
Abstract
This document defines a means of remotely initiating Multiprotocol
Label Switched Protocol Pings on Label Switched Paths. A proxy ping
request is sent to any Label Switching Routers along a Label Switched
Path. The primary motivations for this facility are first to limit
the number of messages and related processing when using LSP Ping in
large Point-to-Multipoint LSPs, and second to enable leaf to leaf/
root tracing.
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
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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 January 06, 2014.
Copyright Notice
Copyright (c) 2013 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
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
Swallow, et al. Expires January 06, 2014 [Page 1]
Internet-Draft Proxy LSP Ping July 2013
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
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described in the Simplified BSD License.
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
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Without obtaining an adequate license from the person(s) controlling
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than English.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 4
2. Proxy Ping Overview . . . . . . . . . . . . . . . . . . . . . 4
3. Proxy MPLS Echo Request / Reply Procedures . . . . . . . . . 6
3.1. Procedures for the initiator . . . . . . . . . . . . . . 6
3.2. Procedures for the proxy LSR . . . . . . . . . . . . . . 7
3.2.1. Proxy LSR Handling when it is Egress for FEC . . . . 9
3.2.2. Downstream Detailed/Downstream Maps in Proxy Reply . 10
3.2.3. Sending an MPLS proxy ping reply . . . . . . . . . . 10
3.2.4. Sending the MPLS echo requests . . . . . . . . . . . 10
3.2.4.1. Forming the base MPLS echo request . . . . . . . 11
3.2.4.2. Per interface sending procedures . . . . . . . . 12
4. Proxy Ping Request / Reply Messages . . . . . . . . . . . . . 12
4.1. Proxy Ping Request / Reply Message formats . . . . . . . 12
4.2. Proxy Ping Request Message contents . . . . . . . . . . . 13
4.3. Proxy Ping Reply Message Contents . . . . . . . . . . . . 14
5. TLV formats . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.1. Proxy Echo Parameters TLV . . . . . . . . . . . . . . . . 14
5.1.1. Next Hop sub-TLV . . . . . . . . . . . . . . . . . . 18
5.2. Reply-to Address TLV . . . . . . . . . . . . . . . . . . 19
5.3. Upstream Neighbor Address TLV . . . . . . . . . . . . . . 19
5.4. Downstream Neighbor Address TLV . . . . . . . . . . . . . 20
6. Security Considerations . . . . . . . . . . . . . . . . . . . 21
7. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 22
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