Internet Engineering Task Force (IETF) D. Li
Request for Comments: 5818 H. Xu
Category: Standards Track Huawei
ISSN: 2070-1721 S. Bardalai
Fujitsu
J. Meuric
France Telecom
D. Caviglia
Ericsson
April 2010
Data Channel Status Confirmation Extensions
for the Link Management Protocol
Abstract
This document defines simple additions to the Link Management
Protocol (LMP) to provide a control plane tool that can assist in the
location of stranded resources by allowing adjacent Label-Switching
Routers (LSRs) to confirm data channel statuses and provide triggers
for notifying the management plane if any discrepancies are found.
As LMP is already used to verify data plane connectivity, it is
considered to be an appropriate candidate to support this feature.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc5818.
Li et al. Standards Track [Page 1]RFC 5818 Data Channel Statuses and LMP April 2010Copyright 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
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described in the Simplified BSD License.
Table of Contents
1. Introduction ....................................................3
2. Specification of Requirements ...................................4
3. Problem Explanation .............................................4
3.1. Mismatch Caused by Manual Configuration ....................4
3.2. Mismatch Caused by LSP Deletion ............................5
3.3. Failed Resources ...........................................6
4. Motivation ......................................................6
5. Extensions to LMP ...............................................7
5.1. Confirm Data Channel Status Messages .......................7
5.1.1. ConfirmDataChannelStatus Messages ...................8
5.1.2. ConfirmDataChannelStatusAck Messages ................8
5.1.3. ConfirmDataChannelStatusNack Messages ...............8
5.2. Data Channel Status Subobject ..............................9
5.3. Message Construction ......................................10
5.4. Backward Compatibility ....................................10
6. Procedures .....................................................11
7. Security Considerations ........................................12
8. IANA Considerations ............................................12
8.1. LMP Message Types .........................................12
8.2. LMP Data Link Object Subobject ............................13
8.3. LMP Error_Code Class Type .................................13
9. Acknowledgments ................................................13
10. References ....................................................13
10.1. Normative References .....................................13
10.2. Informative References ...................................14
Contributor's Address .............................................14
Li et al. Standards Track [Page 2]RFC 5818 Data Channel Statuses and LMP April 2010
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