Extreme Networks ExtremeWare 7.7, Справочник по командам

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show diagnostics cable
ExtremeWare 7.7 Command Reference Guide 1271
show diagnostics cable
show diagnostics cable {ports [all| <portlist>] mode [auto | both |
manual]detail}
Description
Displays the results of the last
run cable diagnostics
ports command.
Default
N/A
Syntax Description
Usage Guidelines
The results of the command display in tabular format:
Port —The port number tested
Pair —Each Ethernet cable consists of four copper pairs of Unshielded Twisted-Pair (UTP). To have a
successful link, two of the four cables must have a status of Terminated and even lengths. The pairs are
labeled A through D. The output shows the test results of each pair.
Length —The length of the cable. All pairs should have the same length. An uneven length can indicate
a kink in the cable, or a broken connection.
Status —The result of the test. The status of Terminated indicates a successful completion. The status of
Open or Short indicates a failure in the cable.
Examples
The following example tests the Ethernet cable inserted into port 1:
# run diagnostics cable ports 1
Cable Diagnostics has completed, to view results enter
show port <port list> cable diagnostics
# show port 1 cable diagnostics
Port Pair Length Status
1 Pair A 3 meters Terminated
Pair B 2 meters Terminated
Pair C 1 meters Open or Short
Pair D 1 meters Open or Short
The following example shows none of the twisted pairs terminate successfully at port 1:
portlist Runs cable diagnostics for one or more port numbers.
all Runs cable diagnostics for all ports.