Brocade Network Advisor SAN + IP User Manual v12.3.0 - Manual (Page 1800)

1728 Brocade Network Advisor SAN + IP User Manual
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Flow Vision flows
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• Direction — A direction is implicitly defined from an ingress port to an egress port, or a source
device to a destination device. For example, source device=x, destination device=y indicates
traffic flowing from x to y. The bidirectional option causes the flow definition to be monitored in
both directions.
Figure 786 illustrates how the frame and port parameters apply to a flow.
FIGURE 786 Frame and port parameters
Flow definitions
To define a flow and configure Flow Vision to monitor that flow, you must provide a unique flow
name and specify the flow parameters. These parameters identify the sets of related frames and
can either be explicitly defined or Flow Vision can learn them through observation.
Flow definitions are stored on the switch on which you create the flow, and are not distributed
across the fabric. This means that each switch knows only its own flows and does not know what
flows exist on other switches.
You can create three types of flows: Monitor, Generator, and Mirror. For specific procedures for
defining flows, refer to the following topics:
• “Creating a Flow Monitor flow definition” on page 1739"
• “Creating a Flow Generator flow definition” on page 1780"
• “Creating a Flow Mirror flow definition” on page 1790"
Flow definition parameters and rules
The rules listed in Table 149 identify the parameters that can be used to define a flow.