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Transparent Interconnection of Lots of Links (TRILL): Using Data Labels for Tree Selection for Multi-Destination Data (RFC7968) Disclosure Number: IPCOM000247399D
Original Publication Date: 2016-Aug-01
Included in the Prior Art Database: 2016-Sep-01
Document File: 44 page(s) / 47K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

Y. Li: AUTHOR [+5]


1.1. Background Description

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Internet Engineering Task Force (IETF)                             Y. Li Request for Comments: 7968                               D. Eastlake 3rd Category: Standards Track                                         W. Hao ISSN: 2070-1721                                                  H. Chen                                                      Huawei Technologies                                                            S. Chatterjee                                                                    Cisco                                                              August 2016

          Transparent Interconnection of Lots of Links (TRILL):     Using Data Labels for Tree Selection for Multi-Destination Data


   TRILL (Transparent Interconnection of Lots of Links) uses    distribution trees to deliver multi-destination frames.  Multiple    trees can be used by an ingress Routing Bridge (RBridge) for flows,    regardless of the VLAN, Fine-Grained Label (FGL), and/or multicast    group of the flow.  Different ingress RBridges may choose different    distribution trees for TRILL Data packets in the same VLAN, FGL,    and/or multicast group.  To avoid unnecessary link utilization,    distribution trees should be pruned based on one or more of the    following: VLAN, FGL, or multicast destination address.  If any VLAN,    FGL, or multicast group can be sent on any tree, for typical fast-    path hardware, the amount of pruning information is multiplied by the    number of trees, but there is limited hardware capacity for such    pruning information.

   This document specifies an optional facility to restrict the TRILL    Data packets sent on particular distribution trees by VLAN, FGL,    and/or multicast groups, thus reducing the total amount of pruning    information so that it can more easily be accommodated by fast-path    hardware.

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

Li, et al.                   Standards Track ...