IPv4 over MAPOS Version 1

Abstract

IPv4 over MAPOS Version 1 Status of this MemoThis memo provides information for the Internet community. This memo does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Authors' NoteThis memo documents a mechanism for supporting Version 4 of the Internet Protocol (IPv4) on Version 1 of the Multiple Access Protocol over SONET/SDH. This document is NOT the product of an IETF working group nor is it a standards track document. It has not necessarily benefited from the widespread and in-depth community review that standards track documents receive. AbstractThis document describes a protocol for transmission of the Internet Protocol Version 4 (IPv4) over Multiple Access Over SONET/SDH (MAPOS) version 1. MAPOS is a link layer protocol and provides multiple access capability over SONET/SDH links. IP runs on top of MAPOS. This document explains IP datagram encapsulation in HDLC frame of MAPOS, and the Address Resolution Protocol (ARP).

MAPOS - Multiple Access Protocol over SONET/SDH Version 1

“…That is, it can support any network layer protocols such as IP. MAPOS IPv4 support is described in [6].…”

MAPOS 16 - Multiple Access Protocol over SONET/SDH with 16 Bit Addressing

“…Since all of the MAPOS protocol family, ARP [11], UNARP [11], NSP [7], and SSP [8], use 32-bit address field for 8-bit MAPOS address, the 16-bit addressing has no influence on them. Each protocol only have to place a 16 bit address in the least significant place in their 32 bit address fields as follows;…”

“…When transmitting IP multicast [11], the thirteen bits of the HDLC address must contain the lowest-order thirteen bits of the IP multicast group address. Exceptions arise when these thirteen bits are either all zeros or all ones, in which case the address 1111 1110 1111 1101 should be used.…”

MAPOS Version 1 Assigned Numbers

“…Using long haul SONET/SDH links, the nodes on such a "SONET-LAN" can span over a wide geographical area. The Internet Protocol (IP) [7] datagrams are transmitted in MAPOS HDLC frames [8].…”