Transparent Interconnection of Lots of Links (TRILL): Interface Addresses APPsub-TLV (RFC7961)
Original Publication Date: 2016-Aug-01
Included in the Prior Art Database: 2016-Aug-25
Internet Society Requests For Comment (RFCs)
D. Eastlake 3rd: AUTHOR [+2]
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.
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
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.
Li Standards Track [Page 1]
RFC 7961 TRILL: IA APPsub-TLV August 2016
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Table of Contents
1. Introduction .......