The following setup will capture LAN packets being sent/recieved between the Windows Host and the Perle device.

1. Add the Network Monitor

Windows NT
add through Control Panel - Networks - Services - Add Network Monitor Tools and Agent

Windows 2000
add through Control Panel - Add/Remove Programs - Add/Remove Windows Components - Management + Monitoring Tools - Network Monitor Tools

2. Configure the Network Monitor Filter

You will need to know the MAC address of the Perle. You can obtain this in multiple ways:
- Read the Ethernet address as printed on the unit
- Obtain the Ethernet address from the management utility
- Ping the Perle and view the ARP table using "arp -s"

Programs - Administrative Tools - Network Monitor

Capture Option - Filter

Windows NT
Double click (edit) the default entry under AND (Address Pairs) of:
Include NT Server (Ethernet) <--> *ANY
Select the Edit Address button
Select the Add button
Create an entry for the Perle
Type = Ethernet
Address = MAC address of Perle
Name = Friendly name for list
Select Permanent Address
Save the address list to a file if you want
OK
Select the Perle on the Station 2 list of devices
OK
Your Filter should now show:
Include NT Server (Ethernet) <--> Perle name (Ethernet)
OK

Windows 2000
Highlight ADD (Address Pairs)
Select Add Address button
Select Edit Addresses button
Select Add button
Create an entry for the Perle
Name = Friendly name for list
Select Permanent Name
Address = MAC address of Perle
Type = Ethernet
Save List if you wish
Close
Under Station 1 select LOCAL
Under Direction select <-->
Under Station 2 select the Perle
OK
Your Filter should now show:
Include Local (Ethernet) <--> Perle name (Ethernet)
OK

3. Start the Capture

Select Capture - Start
If you are using TCP/IP, open a command prompt and ping the Perle to verify the capture. You should see an entry appear in the Capture window.
Select Capture - Stop when completed
Select File - Save As to store the capture

Note: freeware Network Analysers are available such as Wireshark which offer more functionality.
When using Wireshark you can add a capture filter to narrow down the trace.
example by IP address: host xxx.xxx.xxx.xxx
example by MAC address: ether host xx:xx:xx:xx:xx:xx:xx:xx