標準號：SIS SS-ISO 9543-1989
中文標準名稱：信息處理系統．電信和系統間信息交換．終端系統到中間系統路由選擇交換協議，聯合該協議使用，提供無連接
英文標準名稱：Information processing systems — Tele- communications and information exchange between systems — End system to Intermediate system routing exchange protocol for use in conjunction with the Protocol for providing the connectionless-
發布日期：1989/9/13 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：This International Standard specifies a protocol which is used by Network Layer entities operating ISO 8473 in End Systems and Intermediate Systems (referred to herein as ES and IS respectively) to maintain route-ing information. The Protocol herein described relies upon the provision of a connectionless-mode underlying service.11This International Standard specifies:a) procedures for the transmission of configuration and routeing information between Network entities residing in End Systems and Network entities re-siding in Intermediate Systems;b) the encoding of the protocol data units used for the transmission of the configuration and routeing information;c) procedures for the correct interpretation of protocol control information; andd) the functional requirements for implementations claiming conformance to this International Standard.The procedures are defined in terms of:a) the interactions between End System and Intermediate System Network entities through the ex-change of protocol data units; andb) the interactions between a Network entity and an underlying service provider through the exchange of subnetwork service primitives.This Internationell Standard does not specify any pro-tocol elements or algorithms for facilitating routeing and relaying among Intermediate Systems. Such functions are intentionally beyond the scope of this International Standard.