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PPP Bridging Control Protocol (BCP)
RFC 2878

Document type: RFC - Proposed Standard (July 2000)
Obsoleted by RFC 3518
Obsoletes RFC 1638
Document stream: IETF
Last updated: 2013-03-02
Other versions: plain text, pdf, html

IETF State: (None)
Document shepherd: No shepherd assigned

IESG State: RFC 2878 (Proposed Standard)
Responsible AD: (None)
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Network Working Group                                      M. Higashiyama
Request for Comments: 2878                                        Anritsu
Obsoletes: 1638                                                  F. Baker
Category: Standards Track                                           Cisco
                                                                July 2000

                  PPP Bridging Control Protocol (BCP)

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2000).  All Rights Reserved.

Abstract

   The Point-to-Point Protocol (PPP) [6] provides a standard method for
   transporting multi-protocol datagrams over point-to-point links.  PPP
   defines an extensible Link Control Protocol, and proposes a family of
   Network Control Protocols for establishing and configuring different
   network-layer protocols.

   This document defines the Network Control Protocol for establishing
   and configuring Remote Bridging for PPP links.

   This document obsoletes RFC 1638, which was based on the IEEE
   802.1D-1993 MAC Bridge[3]. This document extends that specification
   by including the IEEE 802.1D-1998 MAC Bridge[8] and IEEE 802.1Q
   Virtual LAN (VLAN)[9] standards. This document also improves the
   protocol in order to support high-speed switched LANs.

Higashiyama & Baker         Standards Track                     [Page 1]
RFC 2878          PPP Bridging Control Protocol (BCP)          July 2000

Table of Contents

   1.     Historical Perspective ................................    3
      1.1       Requirements Keywords ...........................    3
   2.     Methods of Bridging ...................................    3
      2.1       Transparent Bridging ............................    3
      2.2       Remote Transparent Bridging .....................    4
      2.3       Source Routing ..................................    5
      2.4       Remote Source Route Bridging ....................    6
      2.5       SR-TB Translational Bridging ....................    7
   3.     Traffic Services ......................................    7
      3.1       LAN Frame Checksum Preservation .................    7
      3.2       Traffic having no LAN Frame Checksum ............    7
      3.3       Tinygram Compression ............................    8
      3.4       Virtual LANs ....................................    8
   4.     A PPP Network Control Protocol for Bridging ...........    9
      4.1       Sending Bridge Frames ...........................   10
         4.1.1  Maximum Receive Unit Considerations .............   11
         4.1.2  Loopback and Link Quality Monitoring ............   11
         4.1.3  Message Sequence ................................   11
         4.1.4  Separation of Spanning Tree Domains .............   12
      4.2       Bridged LAN Traffic in IEEE 802 Untagged Frame ..   12
      4.3       Bridged LAN Traffic in IEEE 802 Tagged Frame ....   16
      4.4       Bridge management protocol data unit ............   21
   5.     BCP Configuration Options .............................   21
      5.1       Bridge-Identification ...........................   22
      5.2       Line-Identification .............................   23
      5.3       MAC-Support .....................................   25
      5.4       Tinygram-Compression ............................   26
      5.5       MAC-Address .....................................   27
      5.6       Spanning Tree Protocol (old formatted) ..........   28
      5.7       IEEE-802-Tagged-Frame ...........................   30
      5.8       Management-Inline ...............................   30
   6.     Changes From RFC 1638 .................................   31
   7.     Security Considerations ...............................   32
   8.     Intellectual Property Notice ..........................   32
   9.     IANA Considerations ...................................   33
   10.    Acknowledgments .......................................   33
   APPENDICES ...................................................   34
      A.     Spanning Tree Bridge PDU (old formatted) ...........   34
      B.     Tinygram-Compression Pseudo-Code ...................   35
   References ...................................................   36
   Authors' Addresses ...........................................   37
   Full Copyright Statement......................................   38

Higashiyama & Baker         Standards Track                     [Page 2]

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