Brocade Communications Systems WFT-2D User Manual page 1253

2. Enter a name (mirror_scsismd) for the flow definition in the Name field.
3. Clear the Monitor check box.
4. Select the Mirror check box.
5. Select the CPU Mirroring or Local Flow Mirror option.
6. Select the Persist over switch reboots check box to persist this flow definition over reboots.
7.
8. Enter an asterisk (*) in the Destination field.
9. Enter the frame type (scsicmd) in the Frame Type field.
10. Click OK to save the flow definition.
Tracking latency between a host and all connected targets
You can use Flow Mirror to track the latency of SCSI Initiator-Target pairs so that you can load
balance them, which enables you to optimize application performance.
The following examples mirror all SCSI commands and their status frames initiated by device H1
ingressing through port F1, which enables you to determine the latency from the captures.
Tracking latency using CPU Mirroring
1. Right-click a port (F1) and select Fabric Vision > Flow > Add.
Brocade Network Advisor SAN User Manual
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•
Direction — Bidirectional
•
Source Device — Source identifier
•
Destination Device — * (an asterisk allows you to use any port)
•
Ingress port — port number (F1)
The name cannot be over 20 characters and can only include alphanumeric characters or
underscores.
NOTE
For a physical switch, the name must be unique. However, for logical switches, the name does
not have to be unique.
By default, CPU Mirroring is enabled.
Select the Activate all selected features check box to immediately activate the flow after
creation.
To select a frame type from a list, click the ellipsis button. Refer to
parameters" on page 1129" for a list of the supported frame type parameters.
When the flow definition activates, the Flow Vision dialog box displays with the new flow
selected (highlighted) in the Flow Definitions table. To review the sub-flow data for the selected
flow, refer to "Monitoring a Flow Mirror flow"
The Add Flow Definition dialog box displays with the following criteria and flow identifiers
pre-populated:
•
Feature — Monitor
•
Direction — Bidirectional
•
Source Device — Source identifier
"Flow frame type
on page 1194".
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Flow Mirror
1201