Format

Classroom

Duration

5.0 Day(s)

Description

This course is designed to give the students the skill required to diagnose and debug TCP/IP problems when operating on OS/390. This skill consists in commands and tools knowledge and in a method to approach TCP/IP problems.
The lab activity and the paper projects will provide some real problems to debug.

Audience

Any personnel that has to operate on TCP/IP networks and provide support to solve communication problems on OS/390.

Prerequisites

Course CB69 - TCP/IP on 0S390 and a good skill on OS/390.

Objectives

The main objectives for the students that attend this course are:
1. Learn what commands are useful in OS/390 environment to control the TCP/IP resources, the TELNET application and debug TCP/IP simple network problems.
2. Learn which trace types (Packet, TELNET, FTP and so forth) are available in OS/390 environment and know:
• What kind of information can be found in a Trace
• When to activate a trace
• How to activate a trace
• How to interpret a trace (for the packet trace there is a dedicated topic)
3. Use the proper diagnostic technique to approach TCP/IP problems
4. Describe the Syslog function in the UNIX environment and know how to configure the /etc/syslog.conf file
5. Understand how to handle and eventually modify the Translate Tables that are used by the majority of TCP/IP applications during a connection with hosts that use ASCII character coding.
6. Perform some practical activity that consist in activating and interpreting some trace types,and debug some real problems concerning various application protocols.

Contents

- Use tools and methods for failure capture and discovery
- Methodology for dealing with TCP/IP for OS/390 failures
- Operator commands
- Common failures and faults case-study:
- Security, Translation tables, Socket interface, Routing, Telnet, Name resolution and more...
- Logical connections between server and clients
- Addresspaces for TCP/IP in OS/390
- Network interfaces
- Internal communication between TCP/IP tasks
- Start and end traces, format trace reports and analyse them with OS/390 system tools