11

Wireless Frame Capture

This chapter shows you how to configure and use wireless frame capture on the NXC.

11.1 Wireless Frame Capture Overview

Troubleshooting wireless LAN issues has always been a challenge. Wireless sniffer tools like Ethereal can help capture and decode packets of information, which can then be analyzed for debugging. It works well for local data traffic, but if your devices are spaced increasingly farther away then it often becomes correspondingly difficult to attempt remote debugging. Complicated wireless packet collection is arguably an arduous and perplexing process. The wireless frame capture feature in the NXC can help.

This chapter describes the wireless frame capture commands, which allows a network administrator to capture wireless traffic information and download it to an Ethereal/Tcpdump compatible format packet file for analysis.

11.2 Wireless Frame Capture Commands

The following table identifies the values required for many of these commands. Other input values are discussed with the corresponding commands.

Table 42 Input Values for Wireless Frame Capture Commands

LABEL

DESCRIPTION

ip_address

The IP address of the Access Point (AP) that you want to monitor. Enter

 

a standard IPv4 IP address (for example, 192.168.1.2).

 

 

mon_dir_size

The total combined size (in kbytes) of all files to be captured. The

 

maximum you can set is 50 megabtyes (52428800 bytes.)

 

 

file_name

The file name prefix for each captured file. The default prefix is monitor

 

while the default file name is monitor.dump.

 

You can use 1-31 alphanumeric characters, underscores or dashes but

 

the first character cannot be a number. This string is case sensitive.

 

 

 

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NXC CLI Reference Guide