Motorola Series Switch WS5100 - Manual (Page 16)

1-6 WS5100 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.
1.2.1.5 Serviceability
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.
1.2.1.6 Tracing / 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.
1.2.1.7 Process 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.
1.2.1.8 Hardware 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.
1.2.1.9 Redundancy
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: