Browse Prior Art Database

Cabletron's VlanHello Protocol Specification Version 4 (RFC2641)

IP.com Disclosure Number: IPCOM000003229D
Original Publication Date: 1999-Aug-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 13 page(s) / 32K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Hamilton: AUTHOR [+2]

Abstract

The VlanHello protocol is part of the InterSwitch Message Protocol (ISMP) which provides interswitch communication between switches running Cabletron's SecureFast VLAN (SFVLAN) product. Switches use the VlanHello protocol to discover their neighboring switches and establish the topology of the switch fabric.

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This is the abbreviated version, containing approximately 8% of the total text.

Network Working Group D. Hamilton

Request for Comments: 2641 D. Ruffen

Category: Informational Cabletron Systems Incorporated

August 1999

Cabletron's VlanHello Protocol Specification

Version 4

Status of this Memo

This memo provides information for the Internet community. It does

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

memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (1999). All Rights Reserved.

Abstract

The VlanHello protocol is part of the InterSwitch Message Protocol

(ISMP) which provides interswitch communication between switches

running Cabletron's SecureFast VLAN (SFVLAN) product. Switches use

the VlanHello protocol to discover their neighboring switches and

establish the topology of the switch fabric.

Table of Contents

1. Introduction...................................... 2

1.1 Data Conventions.............................. 2

2. VlanHello Protocol Operational Overview........... 2

2.1 Neighbor Discovery............................ 2

2.2 Port States................................... 3

2.3 Topology Events............................... 5

2.4 Timers........................................ 9

3. InterSwitch Message Protocol...................... 9

3.1 Frame Header.................................. 10

3.2 ISMP Packet Header............................ 11

3.3 ISMP Message Body............................. 12

4. Interswitch Keepalive Message..................... 13

5. Security Considerations........................... 16

6. References........................................ 16

7. Authors' Addresses................................ 16

8. Full Copyright Statement.......................... 17

1. Introduction

This memo is being distributed to members of the Internet community

in order to solicit reactions to the proposals contained herein.

While the specification discussed here may not be directly relevant

to the research problems of the Internet, it may be of interest to

researchers and implementers.

1.1 Data Conventions

The methods used in this memo to describe and picture data adhere to

the standards of Internet Protocol documentation [RFC1700], in

particular:

The convention in the documentation of Internet Protocols is to

express numbers in decimal and to picture data in "big-endian"

order. That is, fields are described left t...