Chapter 46 Diagnostics

 

 

 

 

Table 221 Maintenance > Diagnostics > Packet Capture (continued)

 

LABEL

DESCRIPTION

 

Continuously

Select this to have the ZyWALL keep capturing traffic and

 

capture and

overwriting old packet capture entries when the available storage

 

overwrite old ones

space runs out.

 

 

 

 

Save data to

Select this to have the ZyWALL only store packet capture entries

 

onboard storage

on the ZyWALL.

 

only

 

 

 

 

 

Save data to USB

Select this to have the ZyWALL store packet capture entries only

 

storage

on a USB storage device connected to the ZyWALL.

 

 

Status:

 

 

Unused - the connected USB storage device was manually

 

 

unmounted by using the Remove Now button or for some reason

 

 

the ZyWALL cannot mount it.

 

 

none - no USB storage device is connected.

 

 

available - you can have the ZyWALL use the USB storage device.

 

 

The available storage capacity also displays.

 

 

Note: The ZyWALL reserves some USG storage space as a

 

 

buffer.

 

 

 

 

Captured Packet

When saving packet captures only to the ZyWALL’s onboard

 

Files

storage, specify a maximum limit in megabytes for the total

 

 

combined size of all the capture files on the ZyWALL.

 

 

When saving packet captures to a connected USB storage device,

 

 

specify a maximum limit in megabytes for each capture file.

 

 

Note: If you have existing capture files and have not selected

 

 

the Continuously capture and overwrite old ones

 

 

option, you may need to set this size larger or delete

 

 

existing capture files.

 

 

The valid range is 1 to 10000. The ZyWALL stops the capture and

 

 

generates the capture file when either the file reaches this size or

 

 

the time period specified in the Duration field expires.

 

 

 

 

Split threshold

Specify a maximum size limit in megabytes for individual packet

 

 

capture files. After a packet capture file reaches this size, the

 

 

ZyWALL starts another packet capture file.

 

 

 

 

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”.

 

 

 

 

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ZyWALL USG 20/20W User’s Guide