Managing Network Monitor from the command line

By using the start netmon command, you can start the Network Monitor user interface from the command line. You can also specify parameters for capturing and filtering frames from network traffic going to and coming from the computer on which you have Network Monitor installed.

Syntax

start netmon [/net Number] [/capturefilter Path] [/displayfilter Path] [/buffersize Number] [/quickfilter {ATM | ETHERNET | IP | IPX | VINES | TOKENRING | FDDI}, Address] [/quickfiltername FilterName] [/autostart] [/autostop]

Parameters

/net Number

Specifies the number of the network from which you want to capture frames. You can specify any of the network segments to which your computer is connected.

/capturefilter Path

Specifies a capture filter to be used when Network Monitor starts. You can abbreviate /capturefilter as /cf.

/displayfilter Path

Specifies a display filter to be used when Network Monitor starts. You can abbreviate /displayfilter as /df.

/buffersize:Number

Specifies the size (in megabytes) of the capture buffer.

/quickfilter {ATM | ETHERNET | IP | IPX | VINES | TOKENRING | FDDI}, Address

Specifies that Network Monitor should capture frames only of a particular type and from a particular address. You can specify up to three types at a time. You can abbreviate /quickfilter as /qf. XOX

/quickfiltername FilterName

Specifies the name of the filter that you describe with the /quickfilter command. This parameter is ignored if you do not specify any /quickfilter options. You can abbreviate /quickfiltername as /qfn.

/autostart

Specifies that Network Monitor should begin to capture data at interface startup.

/autostop

Specifies that Network Monitor should stop capturing data when the capture buffer is full.

/?

Displays help at the command prompt.

Remarks

• Network Monitor is not installed by default. To use this command, you must have installed Network Monitor on your computer, and you must run the command from the directory where Network Monitor is installed.

Examples

To set the size of your capture buffer to 4 megabytes, type:

start netmon /buffersize:4

To load a specific capture filter when you start Network Monitor, type:

start netmon /capturefilter d:\captures\http.cf

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