Fabric Watch Administrator's Guide v7.0.0 (53-1002153-01, April 2011)

Fabric Watch Administrator’s Guide 13
53-1002153-01
Data values
1
Important information related to event classes is also tracked and made available. For example,
you can track changes from an external source by the user name, IP address, or type of
management interface used to access the switch.
NOTE
Audit messages are generated for port fencing configuration changes, whether port fencing is
enabled or disabled.
You can set up an external host to receive Audit messages so you can easily monitor unexpected
changes. For information on error messages generated by Fabric Watch, see the Fabric OS
Message Reference. For information on configuring an Audit Log, see the Audit Log Configuration
section of the Fabric OS Administrator’s Guide for more information.
Data values
A data value represents a measured value or a state value:
• Measured value is the current, measurable value of a fabric or fabric element, such as
environmental temperature.
• State value, which is the only qualitative data value, provides information on the overall state
of a fabric component. Instead of numerical data, state values contain information on whether
components are faulty, active, or in another state.
Fabric Watch compares counter values and measured values to a set of configurable limits to
determine whether fabric monitoring has occurred and whether to notify you. You must set
appropriate threshold boundaries to trigger an event.
State values are handled differently, as Fabric Watch monitors state values for certain states which
you can select. When a state value transitions to one of the monitored states, an event is triggered.
Time bases specify the time interval between two samples to be compared. You can set the time
base to day (samples are compared once a day), hour (samples are compared once an hour),
minute (samples are compared every minute), or second (samples are compared every second).
This configurable field affects the comparison of sensor-based data with user-defined threshold
values.
See “Time bases” on page 17 for more information.
Fabric Watch support in Access Gateway mode
Both the Advanced Performance Monitoring (APM) license and the Fabric Watch license must be
installed on the platform configured in Access Gateway (AG) mode to use the frame monitoring and
end-to-end (EE) monitoring capabilities. The APM license provides the counters and the Fabric
Watch license provides the monitoring and alert mechanisms for these counters. See “Setting the
high threshold of the RX area of an EE monitor” on page 50 for configuration information.
The following classes are not supported in Access Gateway mode:
• Fabric
• Security
• E_Port (Port subclass)
• VE_Port (Port subclass)