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