Chapter 18 Diagnostics
NWA3000-N Series User’s Guide
232
18.3.1 Packet Capture Files
Click Maintenance > Diagnostics > Packet Capture > Files to open the packet capture files
screen. This screen lists the files of packet captures the device has performed. You can download
the files to your computer where you can study them using a packet analyzer (also known as a
network or protocol analyzer) such as Wireshark.
Figure 114 Maintenance > Diagnostics > Packet Capture > Files
The following table describes the labels in this screen.
18.3.2 Example of Viewing a Packet Capture File
Here is an example of a packet capture file viewed in the Wireshark packet analyzer. Notice that the
size of frame 15 on the wire is 1514 bytes while the captured size is only 1500 bytes. The device
Table 93 Maintenance > Diagnostics > Packet Capture > Files
LABEL DESCRIPTION
Rem ove Select files and click Rem ove to delete them from the device. Use the [ Shift] and/or
[ Ctrl] key to select multiple files. A pop-up window asks you to confirm that you want
to delete.
Download Click a file to select it and click Dow nload to save it to your computer.
# This column displays the number for each packet capture file entry. The total num ber
of packet capture files that you can save depends on the file sizes and the available
flash storage space.
File Name This column displays the label that identifies the file. The file name format is interface
name-file suffix.cap.
Size This column displays the size (in bytes) of a configuration file.
Last Modified This column displays the date and time that the individual files were saved.