Cambium Networks PTP 250, User Manual

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PTP 250 User Guide Testing link end hardware
phn-2510_002v000 (Mar 2012) 8-7
Test Ethernet packet errors reported by ODU
Log in to the unit and select menu option Statistics . Select Reset Counters at the bottom
of the page and wait until the Data Port Rx Packets counter has reached 1 million. If the
counter does not increment or increments too slowly, because for example the link is
newly installed and there is no offered Ethernet traffic, then abandon this procedure and
consider using the procedure
Test ping packet loss on page 8-7 .
Test Ethernet packet errors reported by managed switch or router
If the ODU is connected to a managed Ethernet switch or router, it may be possible to
monitor the error rate of Ethernet packets. Please refer to the user guide of the managed
network equipment. The test has passed if the rate of packet errors reported by the
managed Ethernet switch or router is less than 10 in 1 million packets.
Test ping packet loss
Using a computer, it is possible to generate and monitor packets lost between the PoE
power supply and the ODU. This can be achieved by executing the Command Prompt
application which is supplied as standard with Windows and Max OS X operating systems.
To test ping packet loss, proceed as follows:
1
Ensure that the IP address of the computer is configured appropriately for
connection to the ODU under test, and does not clash with the IP addresses of
other devices connected to the network.
2
If the PoE power supply is connected to an Ethernet switch or router then connect
the computer to a spare port, if available.
3
If it is not possible to connect the computer to a spare port of an Ethernet switch
or router, then the PoE power supply will need to be disconnected from the
network in order to execute this test:
Disconnect the PoE power supply from the network.
Connect the computer directly to the LAN port of the PoE power supply.
This will disrupt network traffic carried by the ODU under test.
4
On the computer, open the Command Prompt application.