Transparent Interconnection of Lots of Links (TRILL): Bidirectional Forwarding Detection (BFD) Support
RFC 7175
Document | Type |
RFC - Proposed Standard
(May 2014; No errata)
Updated by RFC 8564
|
|
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Authors | Vishwas Manral , Donald Eastlake , David Ward , Ayan Banerjee | ||
Last updated | 2018-12-20 | ||
Replaces | draft-manral-trill-bfd-encaps | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 7175 (Proposed Standard) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Ralph Droms | ||
IESG note | Erik Nordmark (nordmark@acm.org) is the document shepherd. | ||
Send notices to | (None) |
Internet Engineering Task Force (IETF) V. Manral Request for Comments: 7175 Ionos Corp. Category: Standards Track D. Eastlake 3rd ISSN: 2070-1721 Huawei R&D USA D. Ward Cisco Systems A. Banerjee Cumulus Networks May 2014 Transparent Interconnection of Lots of Links (TRILL): Bidirectional Forwarding Detection (BFD) Support Abstract This document specifies use of the Bidirectional Forwarding Detection (BFD) protocol in Routing Bridge (RBridge) campuses based on the RBridge Channel extension to the Transparent Interconnection of Lots of Links (TRILL) protocol. BFD is a widely deployed Operations, Administration, and Maintenance (OAM) mechanism in IP and MPLS networks, using UDP and Associated Channel Header (ACH) encapsulation respectively. This document specifies the BFD encapsulation over TRILL. 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/rfc7175. Manral, et al. Standards Track [Page 1] RFC 7175 TRILL BFD Support May 2014 Copyright Notice Copyright (c) 2014 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 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 ....................................................2 1.1. Terminology ................................................3 2. BFD over TRILL ..................................................3 2.1. Sessions and Initialization ................................4 3. TRILL BFD Control Protocol ......................................5 3.1. One-Hop TRILL BFD Control ..................................5 3.2. BFD Control Frame Processing ...............................5 4. TRILL BFD Echo Protocol .........................................6 4.1. BFD Echo Frame Processing ..................................6 5. Management and Operations Considerations ........................7 6. Default Authentication ..........................................7 7. Security Considerations .........................................8 8. IANA Considerations .............................................9 9. Acknowledgements ................................................9 10. References .....................................................9 10.1. Normative References ......................................9 10.2. Informative References ...................................10 1. Introduction Faster convergence is a critical feature of Transparent Interconnection of Lots of Links (TRILL) [RFC6325] networks. The TRILL IS-IS Hellos [RFC7177] [IS-IS] used between RBridges provide a basic neighbor and continuity check for TRILL links. However, failure detection by non-receipt of such Hellos is based on the Holding Time parameter that is commonly set to a value of tens of seconds and, in any case, has a minimum expressible value of one second. Manral, et al. Standards Track [Page 2] RFC 7175 TRILL BFD Support May 2014 Some applications, including Voice over IP, may wish, with high probability, to detect interruptions in continuity within a much shorter time period. In some cases, physical-layer failures can be detected very rapidly, but this is not always possible, such as when there is a failure between two bridges that are in turn between twoShow full document text