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A Distributed NHRP Service Using SCSP (RFC2335)

IP.com Disclosure Number: IPCOM000002903D
Original Publication Date: 1998-Apr-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 6 page(s) / 13K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Luciani: AUTHOR

Abstract

This document describes a method for distributing an NHRP service within a LIS [1]. This method uses the Server Cache Synchronization Protocol (SCSP) [2] to synchronize the client information databases held by NHRP Servers (NHSs) within a LIS.

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 21% of the total text.

Network Working Group J. Luciani

Request for Comments: 2335 Bay Networks

Category: Standards Track April 1998

A Distributed NHRP Service Using SCSP

Status of this Memo

This document specifies an Internet standards track protocol for the

Internet community, and requests discussion and suggestions for

improvements. Please refer to the current edition of the "Internet

Official Protocol Standards" (STD 1) for the standardization state

and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (1998). All Rights Reserved.

Abstract

This document describes a method for distributing an NHRP service

within a LIS [1]. This method uses the Server Cache Synchronization

Protocol (SCSP) [2] to synchronize the client information databases

held by NHRP Servers (NHSs) within a LIS.

1. Introduction

The keywords MUST, MUST NOT, REQUIRED, SHALL, SHALL NOT, SHOULD,

SHOULD NOT, RECOMMENDED, MAY, and OPTIONAL, when they appear in this

document, are to be interpreted as described in [4].

NHRP Clients (NHCs) register their existence and reachability

information with NHRP Servers (NHSs). There may be multiple NHSs in

a given Logical IP Subnet (LIS). NHCs do not necessarily register

with all NHSs in a LIS; however, all NHCs need to be able to query at

least one NHS about any NHC within the LIS. Thus, the contents of

the NHS databases in a LIS need to be synchronized across the LIS.

The Server Cache Synchronization Protocol (SCSP) solves the

generalized server synchronization/cache-replication problem for

distributed databases and thus SCSP may be applied to the NHS

database synchronization problem within the LIS.

SCSP is defined in two parts: the protocol independent part and the

client/server protocol specific part. The protocol independent part

is defined in [2] whereas this document will specify the

client/server protocol specific part where NHRP is the client/server

protocol.

This document is separate from [2] because it was felt that it was

desirable to allow the client/server protocol specific part

specification for NHRP to progress independently from the protocol

independent specification.

2. Overview

All NHSs belonging to a Logical IP Subnet (LIS) [1] are said to

belong to a Server Group (SG). An SG is identified by, not

surprisingly, its SGID which is contained in a field in all SCSP

packets. All SCSP packets contain a Protocol ID (PID) field as well.

This ...