Motorola WS5100 manual 1.2.1.5Serviceability, 1.2.1.6Tracing / Logging, 1.2.1.7Process Monitor

1-6WS5100 Series Switch System Reference Guide

•RAM tests, Real Time Clock tests, etc.

3.Manufacturing Diagnostics – Manufacturing diagnostics are a set of diagnostics used by manufacturing to inspect quality of hardware.

1.2.1.5Serviceability

A special set of Service CLI commands are available to provide additional troubleshooting capabilities for service personnel (for example, check the time critical processes were started), access to Linux services, panic logs, etc. Only authorized users or service personnel are provided access to the Service CLI.

A built-in Packet Sniffer allows service personnel to capture incoming and outgoing packets in a buffer.

The switch also maintains various statistics for RF activity, Ethernet ports etc. RF statistics include roaming stats, packet counters, octets tx/rx, signal, noise SNR, retry, and information for each MU.

1.2.1.6Tracing / Logging

Log messages are well-defined and documented system messages with various destinations. They are numbered and referenced by ID. Each severity level group, can be configured separately to go to either the serial console, telnet interface, log file or remote syslog server.

Trace messages are more free-form and are used mainly by support personnel for tracking problems. They are enabled or disabled via CLI commands. Trace messages can go to a log file, the serial console, or the current tty.

Log and trace messages are interleaved in the same log file, so chronological order is preserved. Log and trace messages from different processes are similarly interleaved in the same file for the same reason.

Log message format is similar to the format used by syslog messages (RFC 3164). Log messages include message severity, source (facility), the time the message was generated and a textual message describing the situation triggering the event. For more information on using the switch logging functionality, see Configuring System Logging on page 8-7.

1.2.1.7Process Monitor

The Process Monitor constantly checks to ensure processes under its control are up and running. Each monitored process sends the Process Monitor periodic heartbeat messages. A process that is down (due to a software crash or stuck in an endless loop) is detected when its heartbeat is not received. Such a process is terminated (if still running) and restarted (if configured) by the Process Monitor.

1.2.1.8Hardware Abstraction Layer and Drivers

The Hardware Abstraction Layer (HAL) provides an abstraction library with an interface hiding hardware/ platform specific data. Drivers include platform specific components such as Ethernet, Flash Memory storage and thermal sensors.

1.2.1.9Redundancy

Using the switch redundancy functionality, up to 12 switches can be configured in a redundancy group (and thereby provide group monitoring). In the event of a switch failure, a switch within the cluster takes control. Therefore, the switch supported network is always up and running even if a switch fails or is removed for maintenance or software upgrade. Switch redundancy provides minimal traffic disruption in the event of a switch failure or intermediate network failure.

The following redundancy features are supported: