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Enabling the System to Test Connected Cable You can enable the system to test the cable connected to a specific port. The test result will be returned
in five minutes. The system can test these attributes of the cable: Receive and transmit directions (RX
and TX), short circuit/open circuit or not, the length of the faulty cable.
Follow these steps to enable the system to test connected cables:
To do… Use the command… Remarks
Enter system view system-view —
Enter Ethernet port view interface interface-type interface-number —
Enable the system to test
connected cables virtual-cable-test Required
z Optical port (including Combo optical port) does not support VCT (virtual-cable-test) function.
z Combo electrical port supports VCT function only when it is in UP condition (using undo shutdown
command), normal Ethernet electrical port always supports this function.
By performing the following configuration, you can set the interval to perform statistical analysis on the
traffic of a port.
When you use the display interface interface-type interface-number command to display the
information of a port, the system performs statistical analysis on the traffic flow passing through the port
during the specified interval and displays the average rates in the interval. For example, if you set this
interval to 100 seconds, the displayed information is as follows:
Last 100 seconds input: 0 packets/sec 0 bytes/sec
Last 100 seconds output: 0 packets/sec 0 bytes/sec
Follow these steps to set the interval to perform statistical analysis on port traffic:
To do… Use the command… Remarks
Enter system view system-view —
Enter Ethernet port view interface interface-type
interface-number —
Set the interval to perform
statistical analysis on port traffic flow-interval interval Optional
By default, this interval is 300
seconds.