TRILL: Data Label based Tree Selection for Multi-destination Data
draft-ietf-trill-tree-selection-00

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Document Type Active Internet-Draft (trill WG)
Last updated 2015-04-21 (latest revision 2015-04-20)
Replaces draft-yizhou-trill-tree-selection
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TRILL Working Group                                                Y. Li
INTERNET-DRAFT                                               D. Eastlake
Intended Status: Standard Track                                   W. Hao
                                                                 H. Chen
                                                     Huawei Technologies
                                                              R. Perlman
                                                                     EMC
                                                                N. Nimmu
                                                                Broadcom
                                                           S. Chatterjee
                                                                   Cisco
                                                          S. Rajagopalan
                                                                     IBM
Expires: October 23, 2015                                 April 21, 2015

   TRILL: Data Label based Tree Selection for Multi-destination Data
                   draft-ietf-trill-tree-selection-00

Abstract

   TRILL uses distribution trees to deliver multi-destination frames.
   Multiple trees can be used by an ingress 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 VLAN and/or FGL and/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 tree; however, there is a
   limited 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 group 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 Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
 

Yizhou, et al                                                   [Page 1]
INTERNET DRAFT      Data Label based Tree Selection           April 2015

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Copyright and License Notice

   Copyright (c) 2015 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
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Table of Contents

   1. Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1.  Background Description . . . . . . . . . . . . . . . . . .  4
     1.2. Motivations . . . . . . . . . . . . . . . . . . . . . . . .  5
   2. Terminology Used in This Document . . . . . . . . . . . . . . .  7
   3. Data Label based Tree Selection . . . . . . . . . . . . . . . .  8
     3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . .  8
     3.2. Sub-TLVs for the Router Capability TLV  . . . . . . . . . .  9
       3.2.1. The Tree and VLANs APPsub-TLV . . . . . . . . . . . . .  9
       3.2.2. The Tree and VLANs Used APPsub-TLV  . . . . . . . . . . 10
       3.2.3. The Tree and FGLs APPsub-TLV  . . . . . . . . . . . . . 11
       3.2.4. The Tree and FGLs Used APPsub-TLV . . . . . . . . . . . 12
     3.3. Detailed Processing . . . . . . . . . . . . . . . . . . . . 12
     3.4. Failure Handling  . . . . . . . . . . . . . . . . . . . . . 13
     3.5. Multicast Extensions  . . . . . . . . . . . . . . . . . . . 14
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