User's Manual

Chapter 19: Diagnostics Tools
TR0153 Rev. E1 145
Capturing DHCP Traffic From Client Device on wlan1
1. Set “Interface” to “wlan1”
2. Set “Protocol” to “all”
3. Set “Packet Count” to “20”
4. Set “Packet length” to 500
5. Click on “DHCP” next to “Common Protocols”
6. Set “Output” to “File”
7. Click on “Start Capture”
8. Allow the capture to complete automatically when the prescribed number of packets has
been captured or click on “Stop Capture” to halt the capture
9. The captured data is accessible by clicking on the link at the bottom of the page under
the heading “Available tcpdump files”. The file name format used is “<file
prefix>_MMDDYYY.HHMM. Click on this link to save it to your computer. The
downloaded file can be parsed by packet analyzers such as Wireshark.
10. Click the checkbox next to the filename in the “Available tcpdump list” and click on the
“Delete Selected” button. This will delete the file from the EnRoute500 and free up
space for other capture files.
Capturing All Traffic From a Specific Client Device
1. Set “Interface” to the one that the client device is attached to
2. Set “Protocol” to “all”
3. Set “Packet Count” to “500”
4. Set “Packet Length” to 500
5. Set the “Optional Host” to the IP address of the client device of interest
6. Set “Output” to “File”
7. Click on “Start Capture”
8. Allow the capture to complete automatically when the prescribed number of packets has
been captured or click on “Stop Capture” to halt the capture
9. The captured data is accessible by clicking on the link at the bottom of the page under
the heading “Available tcpdump files”. The file name format used is “<file
prefix>_MMDDYYY.HHMM. Click on this link to save it to your computer. The
downloaded file can be parsed by packet analyzers such as Wireshark.
10. Click the checkbox next to the filename in the “Available tcpdump list” and click on the
“Delete Selected” button. This will delete the file from the EnRoute500 and free up
space for other capture files.