ZyXEL Communications 110, 1100, 310 manual File Size

Chapter 40 Diagnostics

Table 206 Maintenance > Diagnostics > Packet Capture (continued)

LABEL	DESCRIPTION
Duration	Set a time limit in seconds for the capture. The ZyWALL stops the capture and
	generates the capture file when either this period of time has passed or the file
	reaches the size specified in the File Size field. 0 means there is no time limit.
File Suffix	Specify text to add to the end of the file name (before the dot and filename
	extension) to help you identify the packet capture files. Modifying the file suffix also
	avoids making new capture files that overwrite existing files of the same name.
	The file name format is “interface name-file suffix.cap”, for example “vlan2-packet-
	capture.cap”.
Number Of Bytes To	Specify the maximum number of bytes to capture per packet. The ZyWALL
Capture (Per Packet)	automatically truncates packets that exceed this size. As a result, when you view
	the packet capture files in a packet analyzer, the actual size of the packets may be
	larger than the size of captured packets.
Capture	Click this button to have the ZyWALL capture packets according to the settings
	configured in this screen.
	You can configure the ZyWALL while a packet capture is in progress although you
	cannot modify the packet capture settings.
	The ZyWALL’s throughput or performance may be affected while a packet capture is
	in progress.
	After the ZyWALL finishes the capture it saves a separate capture file for each
	selected interface. The total number of packet capture files that you can save
	depends on the file sizes and the available flash storage space. Once the flash
	storage space is full, adding more packet captures will fail.
Stop	Click this button to stop a currently running packet capture and generate a separate
	capture file for each selected interface.
Reset	Click this button to return the screen to its last-saved settings.

40.3.1 The Packet Capture Files Screen

Click Maintenance > Diagnostics > Packet Capture > Files to open the packet capture files screen. This screen lists the files of packet captures stored on the ZyWALL or a connected USB storage device. 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 357 Maintenance > Diagnostics > Packet Capture > Files

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	ZyWALL 110/310/1100 Series User’s Guide