Patton electronic SmartNode 4110 Series ユーザーズマニュアル

Using the built-in Ethernet sniffer

SmartWare Software Configuration Guide 

The following is an example of how the sniffer is normally used:

It is possible to capture packets on multiple Ethernet ports at the same time.

Enable the sniffer on ethernet port 0 1. (Normally the sniffer stops 
capturing, if the capture buffer is full. However, if the ‘wrap’ option is 
specified, the sniffer starts discarding the oldest packets and retains 
the newest ones, if the capture buffer is full.)

Now the sniffer is active and will capture the datapackets on the 
specified ethernet port.

Disable the sniffer on ethernet port 0 1. (Note, that the captured 
data is not stored to flash memory unless you issue this command)

The file in the flash memory will be named as follows:
nvram:ethernet-0-<slot>-<port>.cap

In this example the name will be:
nvram:ethernet-0-0-1.cap

Copy the capture file via TFTP to a workstation.

Erase the capture file on the system to save flash memory.

Now the capture file capture.cap can be viewed on a workstation 
with Ethereal for example.