Extreme 3804 Manuale Supplementare

4

Advanced System Diagnostics and Troubleshooting Guide

Contents

Packet Errors and Packet Error Detection

Definition of Terms

Standard Ethernet Detection for Packet Errors on the Wire

Extreme Networks’ Complementary Detection of Packet Errors Between Wires

Hardware System Detection Mechanisms

Software System Detection Mechanisms

Failure Modes

Transient Failures

Systematic Failures

Soft-State Failures

Permanent Failures

Responding to Failures

Error Messages for Fabric Checksums

Error Message Format

Fabric Checksum Error Message Logging

Checksum Message Examples

Panic/Action Error Messages

Panic/Action Message Example

Software Exception Handling

Overview of Software Exception Handling Features

System Watchdog Behavior

System Software Exception Recovery Behavior

Redundant MSM Behavior

Configuring System Recovery Actions

Related Commands

Configuring System Recovery Actions

Configuring Reboot Loop Protection

Related Commands

Configuring Reboot Loop Protection

Dumping the System Memory

Related Commands

Configuring an Automatic System Dump During System Recovery

Initiating a Manual System Dump

Diagnostics

Diagnostic Test Functionality

How Diagnostic Tests are Run

How the Test Affects the Switch