Dell PowerConnect M6220 Configuration Guide - Page 23

Cable Test for Copper Ports, CLI Example, Normal, Short, Cable Test Failed - console cable

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console(config-if-1/g2)#storm-control broadcast level 7 Example #2: Set Multicast Storm Control for an Interface console(config-if-1/g2)#storm-control multicast level 8 Example #3: Set Unicast Storm Control for an Interface console(config-if-1/g2)#storm-control unicast level 5 Cable Test for Copper Ports The cable test feature enables you to determine the cable connection status on a selected port. The switch uses Time Domain Reflectometry (TDR) technology to determine the quality and characteristics of a copper cable attached to a port. NOTE: The cable test feature is supported only for copper cable. it is not supported for optical fiber cable. In privileged exec mode, enter test copper-port tdr unit/port to run the cable test on the specified port. One of the following statuses are returned: • Normal: The cable is working correctly. • Open: The cable is disconnected or there is a faulty connector. • Short: There is an electrical short in the cable. • Cable Test Failed: The cable status could not be determined. The cable may in fact be working. The command also returns a cable length estimate if this feature is supported by the PHY for the current link speed. The length is displayed as the estimated length. Note that if the link is down and a cable is attached to a 10/100 Ethernet adapter, then the cable status may display as Open or Short because some Ethernet adapters leave unused wire pairs unterminated or grounded. Unknown is displayed if the cable length could not be determined. If the port has an active link while the cable test is run, the link can go down for the duration of the test. The test may take several seconds to run. To view cable status information for multiple ports, enter show copper-ports tdr. If the cable test has not been run on a port, the results indicate that the test has not been performed. CLI Example console#test copper-port tdr 1/g1 Cable Status Short Cable Length 5m console#show copper-ports tdr Port ------1/g1 1/g2 Result Length [meters] Date Short 9 Jan 01 1970 18:03:23 Test has not been performed System Configuration 23

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System Configuration
23
console(config-if-1/g2)#storm-control broadcast level 7
Example #2: Set Multicast Storm Control for an Interface
console(config-if-1/g2)#storm-control multicast level 8
Example #3: Set Unicast Storm Control for an Interface
console(config-if-1/g2)#storm-control unicast level 5
Cable Test for Copper Ports
The cable test feature enables you to determine the cable connection status on a selected port. The
switch uses Time Domain Reflectometry (TDR) technology to determine the quality and characteristics
of a copper cable attached to a port.
NOTE:
The cable test feature is supported only for copper cable. it is not supported for optical fiber cable.
In privileged exec mode, enter
test copper-port tdr
unit/port
to run the cable test on the
specified port. One of the following statuses are returned:
•
Normal
: The cable is working correctly.
•
Open
: The cable is disconnected or there is a faulty connector.
•
Short
: There is an electrical short in the cable.
•
Cable Test Failed
: The cable status could not be determined. The cable may in fact be working.
The command also returns a cable length estimate if this feature is supported by the PHY for the current
link speed. The length is displayed as the estimated length. Note that if the link is down and a cable is
attached to a 10/100 Ethernet adapter, then the cable status may display as Open or Short because some
Ethernet adapters leave unused wire pairs unterminated or grounded. Unknown is displayed if the cable
length could not be determined.
If the port has an active link while the cable test is run, the link can go down for the duration of the test.
The test may take several seconds to run.
To view cable status information for multiple ports, enter
show copper-ports tdr
. If the cable test
has not been run on a port, the results indicate that the test has not been performed.
CLI Example
console#test copper-port tdr 1/g1
Cable Status
...................................
Short
Cable Length
...................................
5m
console#show copper-ports tdr
Port
Result
Length [meters]
Date
-------
------
---------------
---------------------
1/g1
Short
9
Jan 01 1970 18:03:23
1/g2
Test has not been performed