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Transparent Interconnection of Lots of Links (TRILL): Interface Addresses APPsub-TLV (RFC7961)

IP.com Disclosure Number: IPCOM000247337D
Original Publication Date: 2016-Aug-01
Included in the Prior Art Database: 2016-Aug-25
Document File: 48 page(s) / 50K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Eastlake 3rd: AUTHOR [+2]

Abstract

This document specifies a TRILL (Transparent Interconnection of Lots of Links) [RFC6325] IS-IS application sub-TLV (APPsub-TLV) [RFC6823] that enables the convenient representation of sets of addresses where all of the addresses in each set designate the same interface (port). For example, a 48-bit MAC (Media Access Control) [RFC7042] address, IPv4 address, and IPv6 address can be reported as all three designating the same interface. In addition, a Data Label (VLAN or Fine-Grained Label (FGL) [RFC7172]) is specified for the interface, along with the TRILL switch and, optionally, the TRILL switch port from which the interface is reachable. Such information could be used in some cases to synthesize responses to, or bypass the need for, the Address Resolution Protocol (ARP) [RFC826], the IPv6 Neighbor Discovery (ND) [RFC4861] protocol, the Reverse Address Resolution Protocol (RARP) [RFC903], or the flooding of unknown destination MAC addresses [ARPND]. If the information reported is complete, it can also be used to detect and discard packets with forged source addresses.

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Internet Engineering Task Force (IETF)                   D. Eastlake 3rd Request for Comments: 7961                                         Y. Li Category: Standards Track                                         Huawei ISSN: 2070-1721                                              August 2016

          Transparent Interconnection of Lots of Links (TRILL):                      Interface Addresses APPsub-TLV

Abstract

   This document specifies a TRILL (Transparent Interconnection of Lots    of Links) IS-IS application sub-TLV that enables the reporting by a    TRILL switch of sets of addresses.  Each set of addresses reports all    of the addresses that designate the same interface (port) and also    reports the TRILL switch by which that interface is reachable.  For    example, a 48-bit MAC (Media Access Control) address, IPv4 address,    and IPv6 address can be reported as all corresponding to the same    interface reachable by a particular TRILL switch.  Such information    could be used in some cases to synthesize responses to, or bypass the    need for, the Address Resolution Protocol (ARP), the IPv6 Neighbor    Discovery (ND) protocol, or the flooding of unknown MAC 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/rfc7961.

Eastlake & Li                Standards Track                    [Page 1]
 RFC 7961                  TRILL: IA APPsub-TLV               August 2016

 Copyright Notice

   Copyright (c) 2016 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 .......