Browse Prior Art Database

Ascend Tunnel Management Protocol - ATMP (RFC2107)

IP.com Disclosure Number: IPCOM000002661D
Original Publication Date: 1997-Feb-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 16 page(s) / 41K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

K. Hamzeh: AUTHOR

Abstract

This document specifies a generic tunnel management protocol that allows remote dial-in users to access their home network as if they were directly attached to the home network. The user's client software uses an address contained in the home network address space for the remote access. Packets to and from the home network are tunneled by the Network Access Server (NAS) to which the user connects and a Home Agent (HA) on the user's home network. This allows for the support of access to Virtual Private Networks and also allows for the use of protocols other than IP to be carried over the tunnel. An example of how the RADIUS (Remote Authentication Dial In User Service) can be used to provide the necessary configuration information to support this service is also provided.

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 7% of the total text.

Network Working Group K. Hamzeh

Request for Comments: 2107 Ascend Communications

Category: Informational February 1997

Ascend Tunnel Management Protocol - ATMP

Status of this Memo

This memo provides information for the Internet community. This memo

does not specify an Internet standard of any kind. Distribution of

this memo is unlimited.

IESG Note:

This note documents a private protocol for tunnel management. This

protocol is NOT the product of an IETF working group nor is it a

standards track document. There is ongoing effort in an IETF working

group which could result in a standards track document which

specifies a protocol which provides similar functionality.

Abstract

This document specifies a generic tunnel management protocol that

allows remote dial-in users to access their home network as if they

were directly attached to the home network. The user's client

software uses an address contained in the home network address space

for the remote access. Packets to and from the home network are

tunneled by the Network Access Server (NAS) to which the user

connects and a Home Agent (HA) on the user's home network. This

allows for the support of access to Virtual Private Networks and also

allows for the use of protocols other than IP to be carried over the

tunnel. An example of how the RADIUS (Remote Authentication Dial In

User Service) can be used to provide the necessary configuration

information to support this service is also provided.

1. Introduction

The Ascend Tunnel Management Protocol (ATMP) is a protocol currently

being used in Ascend Communication products to allow dial-in client

software to obtain virtual presence on a user's home network from

remote locations. A user calls into a remote NAS but, instead of

using an address belonging to a network directly supported by the

NAS, the client software uses an address belonging to the user's

"Home Network". This address can be either provided by the client

software or assigned from a pool of addresses from the Home Network

address space. In either case, this address belongs to the Home

Network and therefore special routing considerations are required in

order to route packets to and from these clients. A tunnel between

the NAS and a special "Home Agent" (HA) located on the Home Network

is used to carry data to and from the client.

ATMP currently allows for both IP and IPX protocols to be tunneled

between the NAS and the HA. The protocol to be used, the HA to use,

and ot...