Administrators Guide (Supporting Fabric OS v7.3.0) Owner manual

A sample use case would be to monitor throughput statistics for inbound traffic between a source
device and a destination device. Monitoring LUN level statistics on page 52 provides an example
of the command and the results for this use case.
• Monitoring of various frame types at a switch port to provide deeper insights into storage I/O access
patterns at a LUN, reservation conflicts, and I/O errors. Examples of the frame types that can be
monitored include SCSI Aborts, SCSI Read, SCSI Write, SCSI Reserve, all rejected frames, and
many others. Refer to Flow frametype parameters on page 19 for a list and description of the frame
types that can be monitored.
• The SCSI Read/Write Frame Count and SCSI Read/Write Data statistics are supported only for
F_Ports for any flow configuration where either srcdev or dstdev exists on the switch, and the flow is
defined using a combination of srcdev, dstdev, ingrport, or egrport (with or without bidir), or a
combination of srcdev, dstdev, lun, ingrport, or egrport.
• Integration with the Monitoring and Alerting Policy Suite (MAPS) service to enable threshold-based
monitoring and alerting based on flows. Refer to the Monitoring and Alerting Policy Suite
Administrator's Guide for more information on integration with MAPS.
Replicating APM monitors using Flow Monitor
It is possible to replicate standard Advanced Performance Monitor (APM) functionality using Flow
Monitor.
For information on replicating standard APM functionality using Flow Monitor, refer to the following
links:
• Creating an end-to-end monitor equivalent on page 55
• Creating a frame monitor equivalent on page 55
• Creating an ingress or egress Top Talker monitor equivalent on page 56
• Creating an end-to-end monitor equivalent on page 55
Creating Flow Monitor flows
To create a Flow Monitor flow, enter the flow --create flowname -feature monitor parameters
command using the parameters listed in the following table. The figure Frame and port parameters on
page 17 illustrates how the frame and port parameters apply to a flow.
Flow Monitor flow parameter combinations TABLE 7
Parameters Field names Description
Port ingrport
egrport
• One field only must be specified
• Values must be explicit
• Can be an F_Port, E_Port, or EX_Port on a local switch
Frame srcdev
dstdev
lun
frametype
• At least one field must be specified
• Values for srcdev and dstdev can be explicit or "*" ("*" indicates
learned flows)
• Values for lun and frametype must be explicit
Optional keyword parameters
Replicating APM monitors using Flow Monitor
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