Transparent Interconnection of Lots of Links (TRILL): Edge Directory Assistance Mechanisms
RFC 8171
| Document | Type | RFC - Proposed Standard (June 2017; No errata) | |
|---|---|---|---|
| Authors | Donald Eastlake , Linda Dunbar , Radia Perlman , Li Yizhou | ||
| Last updated | 2017-06-20 | ||
| Replaces | draft-dunbar-trill-scheme-for-directory-assist | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Yang Validation | ☯ 0 errors, 0 warnings. | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Susan Hares | ||
| Shepherd write-up | Show (last changed 2017-01-13) | ||
| IESG | IESG state | RFC 8171 (Proposed Standard) | |
| Action Holders |
(None)
|
||
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Alia Atlas | ||
| Send notices to | (None) | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | RFC-Ed-Ack | ||
Internet Engineering Task Force (IETF) D. Eastlake 3rd
Request for Comments: 8171 L. Dunbar
Category: Standards Track Huawei
ISSN: 2070-1721 R. Perlman
EMC
Y. Li
Huawei
June 2017
Transparent Interconnection of Lots of Links (TRILL):
Edge Directory Assistance Mechanisms
Abstract
This document describes mechanisms for providing directory service to
TRILL (Transparent Interconnection of Lots of Links) edge switches.
The directory information provided can be used in reducing multi-
destination traffic, particularly ARP / Neighbor Discovery (ND) and
unknown unicast flooding. It can also be used to detect traffic with
forged source addresses.
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 7841.
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/rfc8171.
Eastlake, et al. Standards Track [Page 1]
RFC 8171 TRILL: Directory Service Mechanisms June 2017
Copyright Notice
Copyright (c) 2017 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. Uses of Directory Information ..............................5
1.2. Terminology ................................................6
2. Push Model Directory Assistance Mechanisms ......................7
2.1. Requesting Push Service ....................................7
2.2. Push Directory Servers .....................................8
2.3. Push Directory Server State Machine ........................9
2.3.1. Push Directory States ...............................9
2.3.2. Push Directory Events and Conditions ...............11
2.3.3. State Transition Diagram and Table .................13
2.4. End Stations and Push Directories .........................15
2.5. Additional Push Details ...................................15
2.6. Providing Secondary Servers with Data from a
Primary Server ............................................16
2.7. Push Directory Configuration ..............................17
3. Pull Model Directory Assistance Mechanisms .....................17
3.1. Pull Directory Message: Common Format .....................19
3.1.1. Version Negotiation ................................20
3.2. Pull Directory Query and Response Messages ................21
3.2.1. Pull Directory Query Message Format ................21
3.2.2. Pull Directory Responses ...........................24
3.2.2.1. Pull Directory Response Message Format ....24
3.2.2.2. Pull Directory Forwarding .................27
3.3. Cache Consistency .........................................28
3.3.1. Update Message Format ..............................32
3.3.2. Acknowledge Message Format .........................33
3.4. Summary of Record Formats in Messages .....................34
Eastlake, et al. Standards Track [Page 2]
RFC 8171 TRILL: Directory Service Mechanisms June 2017
3.5. End Stations and Pull Directories .........................34
3.5.1. Pull Directory Hosted on an End Station ............35
3.5.2. Use of Pull Directory by End Stations ..............36
3.5.3. Native Pull Directory Messages .....................37
3.6. Pull Directory Message Errors .............................38
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