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TN3270E Service Location and Session Balancing (RFC3049)

IP.com Disclosure Number: IPCOM000005243D
Original Publication Date: 2001-Jan-01
Included in the Prior Art Database: 2001-Aug-20
Document File: 22 page(s) / 41K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Naugle: AUTHOR [+3]

Abstract

This document discusses the implementation of Service Location Protocol (SLP) and session balancing with a TN3270E emulator in a client server implementation with a TN3270E server.

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. Naugle Request for Comments: 3049 K. Kasthurirangan Category: Standards Track IBM

G. Ledford Zephyr Development

January 2001

TN3270E Service Location and Session Balancing

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 (2001). All Rights Reserved.

Abstract

This document discusses the implementation of Service Location Protocol (SLP) and session balancing with a TN3270E emulator in a client server implementation with a TN3270E server.

Application program developer's can locate TN3270E services and load balance among those services (3270 host sessions), by using this SLP support.

Table of Contents

1. Introduction and Terminology ................................. 2

1.1 Terminology .............................................. 2 2. An Overview of RFC 2165 ...................................... 3 2.1 SLP Agents ............................................... 3 2.2 Service Agents ........................................... 3

2.3 User Agents .............................................. 4 3. TN3270E Server Environment and Load .......................... 4

3.1 TnN3270E Server Load ..................................... 4 4. TN3270E Client Configuration ................................. 6 4.1 SLP Scope ................................................ 6 4.2 DA-Discovery Time-Out .................................... 6

4.3 SA-Discovery Time-Out .................................... 7 5. TN3270E Client Implementation Information .................... 7

5.1 Overview ................................................. 7

Naugle, et al. Standards Track [Page 1]

RFC 3049 TN3270E Location Balancing January 2001

5.2 How to Obtain List of TN3270E Servers Supporting SLP ..... 8 5.3 TN3270E Sample Client Flow ............................... 9 5.3.1 Open the SLP connection ............................. 9 5.3.2 Query the list of TN3270E servers ................... 9 5.3.3 Forward Looking Example using SLPv2 ................. 10

5.3.4 Determine loading of each TN3270E server ............ 10

5.4 Recommendations .......................................... 11 6. Sample Trace Flow of SLP and Session Balancing ............... 11 7. Service Templates and Service Registration ................... 12 7.1 The TN3270E Service Type Template ........................ 12 7.2 The Server Service Template .............................. 16 7.3 Template Contact Information ............................. 17 7.4 Security Considerations .................................. 17 7.5 Sample TN3270 Service Registration Message ............... 18

7.6 Sample Server Service Registration Message ............... 19 8. References .............................