RFC 2194 (rfc2194) - Page 2 of 35
Review of Roaming Implementations
Alternative Format: Original Text Document
RFC 2194 Review of Roaming Implementations September 1997 include Internet access as well as secure access to corporate intranets via a Virtual Private Network (VPN), enabled by tunneling protocols such as PPTP, L2F, or L2TP. What is required to provide roaming capability? The following list is a first cut at defining the requirements for successful roaming among an arbitrary set of ISPs: Phone number presentation Phone number exchange Phone book compilation Phone book update Connection management Authentication NAS Configuration/Authorization Address assignment and routing Security Accounting In this document we review existing roaming implementations, describing their functionality within this framework. In addition to full fledged roaming implementations, we will also review implementations that, while not meeting the strict definition of roaming, address several of these problem elements. These implementations typically fall into the category of shared use networks or non-IP dialup networks. 3.1. Terminology This document frequently uses the following terms: home ISP This is the Internet service provider with whom the user maintains an account relationship. local ISP This is the Internet service provider whom the user calls in order to get access. Where roaming is implemented the local ISP may be different from the home ISP. phone book This is a database or document containing data pertaining to dialup access, including phone numbers and any associated attributes. Aboba, et. al. Informational
