RFC 2835 IP and ARP over HIPPI-6400 (GSN) May 2000 3. IP Subnetwork Configuration . . . . . . . . . . . . . . . 5 3.1 Background . . . . . . . . . . . . . . . . . . . . . 5 3.2 HIPPI LIS Requirements . . . . . . . . . . . . . . . 6 4. Internet Protocol . . . . . . . . . . . . . . . . . . . . 7 4.1 Packet Format . . . . . . . . . . . . . . . . . . . 7 4.1.1 IEEE 802.2 LLC . . . . . . . . . . . . . . . . 7 4.1.2 SNAP . . . . . . . . . . . . . . . . . . . . . 7 4.1.3 Packet diagrams . . . . . . . . . . . . . . . 8 4.2 HIPPI-6400 Hardware address: Universal LAN MAC addr. 9 4.3 Maximum Transmission Unit - MTU . . . . . . . . . . 10 5. HIPPI Address Resolution Protocol - HARP . . . . . . . . 11 5.1 HARP Algorithm . . . . . . . . . . . . . . . . . . . 12 5.1.1 Selecting the authoritative HARP service . . . 12 5.1.2 HARP registration phase . . . . . . . . . . . 13 5.1.3 HARP operational phase . . . . . . . . . . . . 14 5.2 HARP Client Operational Requirements . . . . . . . . 15 5.3 Receiving Unknown HARP Messages . . . . . . . . . . 16 5.4 HARP Server Operational Requirements . . . . . . . . 16 5.5 HARP and Permanent ARP Table Entries . . . . . . . . 18 5.6 HARP Table Aging . . . . . . . . . . . . . . . . . . 18 6. HARP Message Encoding . . . . . . . . . . . . . . . . . . 19 6.1 Generic IEEE 802 ARP Message Format . . . . . . . . . 19 6.2 HIPARP Message Formats . . . . . . . . . . . . . . . 21 6.2.1 Example Message encodings: . . . . . . . . . . 23 6.2.2 HARP_NAK message format . . . . . . . . . . . . 24 7. Broadcast and Multicast . . . . . . . . . . . . . . . . 24 7.1 Protocol for an IP Broadcast Emulation Server - PIBES 25 7.2 IP Broadcast Address . . . . . . . . . . . . . . . . 25 7.3 IP Multicast Address . . . . . . . . . . . . . . . . 25 7.4 A Note on Broadcast Emulation Performance . . . . . . 26 8. HARP for Scheduled Transfer . . . . . . . . . . . . . . . 26 9. Security Consierations . . . . . . . . . . . . . . . . . 26 10. Open Issues . . . . . . . . . . . . . . . . . . . . . . . 27 11. HARP Examples . . . . . . . . . . . . . . . . . . . . . 27 11.1 Registr. Phase of Client Y on Non-broadcast Hardware 27 11.2 Registr. Phase of Client Y on Broadcast-capable . . 28 11.3 Operational Phase (phase II) . . . . . . . . . . . 29 11.3.1 Successful HARP_Resolve example . . . . . . 29 11.3.2 Non-successful HARP_Resolve example . . . . 30 12. References . . . . . . . . . . . . . . . . . . . . . . . 31 13. Acknowledgments . . . . . . . . . . . . . . . . . . . . 32 14. Author's Address . . . . . . . . . . . . . . . . . . . . 32 15. Full Copyright Statement . . . . . . . . . . . . . . . . 33 Pittet Standards Track