Internet Engineering Task Force (IETF) H. Zhai
Request for Comments: 7357 F. Hu
Updates: 6325 ZTE
Category: Standards Track R. Perlman
ISSN: 2070-1721 Intel Labs
D. Eastlake 3rd
Huawei
O. Stokes
Extreme Networks
September 2014
Transparent Interconnection of Lots of Links (TRILL):
End Station Address Distribution Information (ESADI) Protocol
Abstract
The IETF TRILL (Transparent Interconnection of Lots of Links)
protocol provides least-cost pair-wise data forwarding without
configuration in multi-hop networks with arbitrary topologies and
link technologies. TRILL supports multipathing of both unicast and
multicast traffic. Devices that implement the TRILL protocol are
called TRILL switches or RBridges (Routing Bridges).
ESADI (End Station Address Distribution Information) is an optional
protocol by which a TRILL switch can communicate, in a Data Label
(VLAN or fine-grained label) scoped way, end station address and
reachability information to TRILL switches participating in ESADI for
the relevant Data Label. This document updates RFC 6325,
specifically the documentation of the ESADI protocol, and is not
backwards compatible.
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/rfc7357.
Zhai, et al. Standards Track [Page 1]RFC 7357 TRILL: ESADI September 2014Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the
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This document is subject to BCP 78 and the IETF Trust's Legal
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Zhai, et al. Standards Track [Page 2]RFC 7357 TRILL: ESADI September 2014Table of Contents
1. Introduction ....................................................4
1.1. Content and Precedence .....................................5
1.2. Terminology ................................................5
2. ESADI Protocol Overview .........................................6
2.1. ESADI Virtual Link ........................................10
2.2. ESADI Neighbor Determination ..............................10
2.3. ESADI Payloads ............................................11
3. ESADI DRB (Designated RBridge) Determination ...................11
4. ESADI PDU Processing ...........................................12
4.1. Unicasting ESADI PDUs .....................................12
4.2. General Transmission of ESADI PDUs ........................13
4.3. General Receipt of ESADI PDUs .............................14
4.4. ESADI Reliable Flooding ...................................14
5. End Station Addresses ..........................................15
5.1. Learning Confidence Level .................................15
5.2. Forgetting End Station Addresses ..........................16
5.3. Duplicate MAC Address .....................................16
6. ESADI-LSP Contents .............................................18
6.1. ESADI Parameter Data ......................................19
6.2. MAC-Reachability TLV ......................................20
6.3. Default Authentication ....................................21
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