How to Monitor H323 over Ethernet

Monitoring IP channels 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 from a template, using the wizard, by selecting:-

  • LAN application.
  • Profile with a description including LAN, Monitor, PH=10/100BT
  • Filter with a description, including DL= MAC802.3/Auto/H323

Example using the wizard:-

  • Profile=>New=>LAN=>lan_mon.acp=>Filter?=>Lan_auto_h323.acf

The profile created by the wizard is ready for H323 monitoring over Ethernet RJ45 10M or 100M (Automatic detection). The H323 protocols (RAS and H225) are automatically decoded if the filter is invoked by the profile.

Acquisition limited to a set of MAC addresses

The profile can be modified to only generate events from a set of MAC addresses:-

  • Edit the profile created by the wizard (e.g. lan_mon.acp)
  • 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:-
    • Profile=>Save as=>filename.acp.

Running the profile

To launch the profile:-

  • Select Profile=>Run or click on the horse_on.gif (968 octets) button. You will be able to select the name of profile (see Running a test).
  • The Event Editor window is opened automatically.

To stop the profile:-

  • Click on the horse_off.gif (975 octets) button (see: Stopping a test).
  • The Event Editor window is automatically closed.

Troubleshooting over Ethernet

  • No messages are displayed in the Event Editor window: Check whether the LEDs on the Clarinet book show activity over LAN interface

 

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