Transparent Interconnection of Lots of Links (TRILL): Header Extension
RFC 7179
Document | Type |
RFC - Proposed Standard
(May 2014; No errata)
Updated by RFC 7780
Updates RFC 6325
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Last updated | 2015-10-14 | ||
Stream | IETF | ||
Formats | plain text pdf html bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 7179 (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) D. Eastlake 3rd Request for Comments: 7179 Huawei Updates: 6325 A. Ghanwani Category: Standards Track Dell ISSN: 2070-1721 V. Manral Ionos Corp. Y. Li Huawei C. Bestler Nexenta Systems May 2014 Transparent Interconnection of Lots of Links (TRILL): Header Extension Abstract The IETF Transparent Interconnection of Lots of Links (TRILL) base protocol (RFC 6325) specifies minimal hooks to safely support TRILL Header extensions. This document specifies an initial extension providing additional flag bits and specifies some of those bits. It updates RFC 6325. 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/rfc7179. Eastlake, et al. Standards Track [Page 1] RFC 7179 TRILL: Header Extension 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 ....................................................3 1.1. Conventions Used in This Document ..........................3 2. TRILL Header Extensions .........................................3 2.1. RBridge Extended Flag Handling Requirements ................5 2.2. No Critical Surprises ......................................5 2.3. Extended Header Flags ......................................6 2.3.1. Critical Summary Bits ...............................7 2.4. Conflict of Extensions .....................................8 3. Specific Extended Header Flags ..................................9 3.1. RBridge Channel Alert Extended Flags .......................9 4. Additions to IS-IS ..............................................9 5. IANA Considerations ............................................10 6. Security Considerations ........................................10 7. Acknowledgements ...............................................11 8. References .....................................................11 8.1. Normative References ......................................11 8.2. Informative References ....................................11 Eastlake, et al. Standards Track [Page 2] RFC 7179 TRILL: Header Extension May 2014 1. Introduction The base IETF Transparent Interconnection of Lots of Links (TRILL) protocol [RFC6325] provides a TRILL Header extension feature and describes minimal hooks to safely support header extensions. (This feature is called "options" in Section 3.8 of [RFC6325].) But, except for the first two bits, the TRILL base protocol document does not specify the structure of extensions to the TRILL Header nor the details of any particular extension. This document is consistent with [RFC6325] and provides further details. It specifies an initial extension word providing additional flag bits and specifies some of those bits. Additional extensions, including TLV-encoded options, may be specified in later documents, for example, [Options] and [Options2]. Section 2 below describes some general principles of TRILL Header extensions and an initial extension. Section 3 specifies a pair ofShow full document text