Brocade Communications Systems Network Advisor 12.3.0, User Manual

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1132 Brocade Network Advisor SAN User Manual
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Flow Vision flows
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Learned flows
Flow Vision creates a learned flow by using an asterisk (*) for the source device, the destination
device, or both devices. This allows Flow Vision to learn all of the source and destination device
pairs passing through the switch using a specified ingress or egress port without having to identify
all the devices.
•
Flow Vision uses an asterisk (*) to indicate a learned flow.
•
Learned source device or destination device values are only supported on 16 Gbps-capable FC
ports.
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Only supports one learning flow per ASIC.
•
Each Flow Vision feature uses learned flows as follows:
-
Flow Monitor can learn all the source device and destination device pairs passing through
the ingress or egress port defined in a flow. Does not support a learned flow for Flow
Monitor flows defined using the LUN, Frame Type, or Bidirectional parameters. Only
supports a learned flow on E_Ports and F_Ports.
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Flow Generator can generate traffic to or from every source or destination device that
shares the zone with the ingress or egress port defined in a flow. When you configure a
learned Generator flow, it queries the Name Server database to identify source and
destination devices that are zoned together. These pairings are not automatically changed
if either member of the pair changes zones. If either member of the pair changes zones,
you must deactivate the flow and then reactivate it to use the new zone values. Flow
Generator allocates the first four flows per source ID to zoned destination IDs. The rest of
the destination IDs are not tested. For learned flows, no zone enforcement is applied to
either the source or destination SIM-Ports.
If the source or destination port for a sub-flow goes offline, the root flow is deactivated and
traffic will be stopped on all sub-flows of that root flow.
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Flow Mirror can capture all the source device and destination device pairs passing through
the ingress or egress port defined in a learned flow. Supports a learned flow for Flow
Mirror flows defined using the LUN, Frame Type, or Bidirectional parameters. If you specify
the frame type in the flow definition, the frame type value must be a fixed value for the
flow to work. For a list of valid frame type values, refer to
“Flow frame type parameters” on
page 1129".
Creating a flow from a learned sub-flow
To create a new flow from a learned sub-flow, complete the following steps.
1. Select the device on which you defined a learned flow and select Monitor > Fabric Vision >
Flow > Monitor.
The Flow Vision dialog box displays pre-populated with a list of all defined flows in the Flow
Definitions table. For more information about the fields and components of the Flow
Definitions table, refer to
“Flows Definitions table fields and components” on page 1134".
2. Select one or more learned flows in the Flow Definitions table and click the right arrow button
to display the sub-flows in the Flows table.
3. Select one learned sub-flow from which you want to create the new learned flow from the Flows
table.