How to monitor IP over Ethernet

Monitoring  IP channel is one of the basic features of Clarinet.

Connecting the unit

The Clarinet Book USB Ethernet 10/100 uses the RJ45 or AUI port.

The Clarinet-Book can be connected  to a 10B2 BNC connector by using:

  • an external transceiver (provided as an accessory) AUI-10B2 
  • the power supply of the Clarinet-Book which provides the power to the transceiver

Setting the test conditions for Ethernet RJ45

A new profile can be created  with the Wizard from the Template list by selecting:

  • LAN application.
  • Profile with a description including LAN, Monitor, PH=10/100BT 
  • Filter with a description including  DL= MAC802.3/Auto

Example using the wizard:

  • ProfileèNewèLANèlan_mon.acpèFilter?èLan.acf

Profile resulting from the wizard is ready for IP monitoring over Ethernet RJ45 10M or 100M (Automatic detection) . The IP protocol is automatically detected by the filter spec Automatic from the MAC layer (Pro=0800).

Acquisition limited to a set of MAC addresses 

The profile can be modified to only generate events from a set of MAC addresses by selecting in TAB [Clarinet 1]:

  • edit the profile resulting from wizard (lan_mon.acp as an example)
  • go to  Monitored Address
    • set the value of source and destination in the columns  source address and destination address
  • Save the profile under a new name:
    • ProfileèSave asèfilename.acp.

Acquisition of MAC messages with a limited length 

A new profile can be created  with the Wizard from the Template list by selecting:

  • LAN application.
  • Profile with a description including LAN, Monitor, PH=10/100BT Len=64
  • Filter with a description including  DL= MAC802.3/Auto

Example using the wizard:

  • ProfileèNewèLANèlan_mon_64.acpèFilter?èLan.acf

Profile resulting from the wizard is ready for IP monitoring over Ethernet RJ45 10M or 100M (Automatic detection) with MAC messages truncated to 64 bytes. The IP protocol is automatically detected by the filter spec Automatic from the MAC layer (Pro=0800)

The profile can be modified to change the length  by selecting in TAB [Clarinet 1]:

  • go to  Interface SpecsèAnalysis mode
    • set the value from the beginning of the message in numbers of bytes in front of   Length
  • Save the profile under a new name:
    • ProfileèSave asèfilename.acp.

Running the profile

To launch the profile:

  • Select Profile->Run or click over horse_on.gif (968 octets) . It allows to select the name of profile. See Running a test
  • The windows of the Event-Editor is automatically opened.

To stop the profile

  • Click over horse_off.gif (975 octets)  See: Stopping a test
  • The window of the Event-Editor is automatically close

Troubleshooting over Ethernet

  • No messages displayed on the Event-Editor windows. Check if the LED of the Clarinet Book show activity over LAN interface

 

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updated:  27-Feb-04