Brocade Communications Systems Network Advisor 12.3.0, User Manual

Page: 1181 / 1940

Brocade Network Advisor SAN User Manual 1129
53-1003154-01
Flow Vision flows
29
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 1140"
•
“Creating a Flow Generator flow definition” on page 1181"
•
“Creating a Flow Mirror flow definition” on page 1191"
Flow definition parameters and rules
The rules listed in Table 88 identify the parameters that can be used to define a flow.
Flow frame type parameters
Frame monitoring can be performed for a variety of frames using predefined frame type
parameters. To access the Frame Type Picker dialog box, click the ellipsis button next to the Frame
Type field on the Add Flow Definition dialog box.
Table 89 lists the frame type parameters and the frames counted for each.
TABLE 88 Flow definition rules
Parameters Field names Rules
Port Ingress
Egress
•
Only one field must be specified
•
Values must be explicit
Frame Source
Destination
LUN
Frame Type
1
1. Refer to Table 89 for more information on frame types.
•
At least one field must be specified
•
Values for source and destination can be explicit or “*” (“*” indicates a
learned flow)
•
Values for LUN and frame type must be explicit
TABLE 89
Supported frame type parameters
Frame type parameter Frames counted
abts Abort sequence frames
baacc All frames accepted
barjt All frames rejected
scsi All SCSI frames (including both command and data frames)
scsiread Only SCSI read command frames
scsiwrite Only SCSI write command frames
scsirw Both SCSI read and write command frames