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A Distributed MARS Service Using SCSP (RFC2443)

IP.com Disclosure Number: IPCOM000003021D
Original Publication Date: 1998-Nov-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 15 page(s) / 39K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Luciani: AUTHOR [+2]

Abstract

This document describes a method for distributing a MARS service within a LIS[1]. This method uses the Server Cache Synchronization Protocol (SCSP)[2] to synchronize the MARS Server databases within a LIS. When SCSP is used to synchronize the caches of MARS Servers in a LIS, the LIS defines the boundary of an SCSP Server Group (SG).

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 8% of the total text.

Network Working Group J. Luciani

Request for Comments: 2443 Bay Networks

Category: Experimental A. Gallo

IBM

November 1998

A Distributed MARS 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 a MARS service

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

Protocol (SCSP)[2] to synchronize the MARS Server databases within a

LIS. When SCSP is used to synchronize the caches of MARS Servers in

a LIS, the LIS defines the boundary of an SCSP Server Group (SG).

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 [5].

The MARS is an extended analog of the ATMARP Server introduced in

[4]. It provides the necessary connection and addressing services

required by layer 3 multicast services over ATM. There are three

basic elements to the MARS model. First, the MARS Server which

manages and distributes layer 3 group membership information to the

LIS. Second, MARS Clients which register with and query a single MARS

Server for layer 3 multicast information. Third, MCS Clients which

register with a single MARS Server and provide layer 3 multicast

forwarding services for a LIS.

Both MARS Clients and MCS Clients explicitly register with the MARS

Server before exchanging layer 3 multicast information. During the

registration process MARS Clients are place on the Cluster Control VC

(CCVC) and MCS Clients are placed on the Server Control VC (SCVC).

Both the CCVC and SCVC are then used to propagate layer 3 multicast

updates to the clients which make up a LIS. During the registration

process MARS Clients are also assigned a unique Cluster Member ID

(CMI) which is used to identify reflected packets in the presence of

MCS Clients.

In the Distributed MARS Model there MAY be multiple MARS Servers in a

given LIS, and since any MARS Server within the LIS MUST be able to

provide layer 3 multicast information about any multicast group

within the LIS, there MUST be a method by which to synchronize

multicast information across all MARS Servers within the LIS.

The Server Cache Synchronization Protocol (SCSP) solves the

generalized server...