Chapter 8
Layer 2
RUGGEDCOM ROX II
CLI User Guide
278
Running a Cable Diagnostic Test
Section 8.1.8.1
Running a Cable Diagnostic Test
To run a cable diagnostic test on a specific port, type:
IMPORTANT!
When cable diagnostics are performed on a port, any established network link on the port will be
dropped and normal network traffic will not be able to pass through either the Port Under Test (PUT) or
the Partner Port. When the cable diagnostic test is done, the original network port settings for both the
PUT and the Partner Port are restored along with any established link.
interfaces
switch
slot
port
diagnostics start-cable-test run
runs
calibration
calibration
Where:
•
slot
is the name of the module location
•
port
is the port number (or a list of ports, if aggregated in a port trunk) for the module
•
runs
is the total number of times cable diagnostics should be performed on the selected port. When set to 0,
cable diagnostics will be performed continuously on the selected port.
•
calibration
is the value used to adjust or calibrate the estimated distance to fault. To calibrate the determine
estimated distance to fault, do the following:
1. Connect an Ethernet cable with a known length (e.g. 50m) to the port that requires calibration. Do not
connect the other end of the cable to any link partner.
2. Run a cable diagnostic test a few times on the port. An OPEN fault should be detected.
3. Find the average distance to the OPEN fault recorded in the log and compare it to the known length of the
cable. The difference can be used as the calibration value.
4. Enter the calibration value and run the cable diagnostic test a few more times. The distance to the OPEN
fault should now be similar to the cable length. Use the distance value to determine the calibration value.
For information about how to view the test results, refer to
Section 8.1.8.2, “Viewing Cable Diagnostic Statistics”
Section 8.1.8.2
Viewing Cable Diagnostic Statistics
To view the statistics collected for a switched Ethernet port after a cable diagnostic test, type:
show
interfaces switch
slot
port
diagnostics cable-diagnostic-results
•
slot
is the name of the module location
•
port
is the port number (or a list of ports, if aggregated in a port trunk) for the module
A list similar to the following example appears:
ruggedcom# show interfaces switch lm1 1 diagnostics cable-diagnostic-results
diagnostics cable-diagnostic-results
running false
good 20
open 0
short 20
imped 0
pass fail total " 10/ 0/ 10 "
run count 0
pass count 0
fail count 0
Содержание RUGGEDCOM ROX II
Страница 2: ...RUGGEDCOM ROX II CLI User Guide ii ...
Страница 4: ...RUGGEDCOM ROX II CLI User Guide iv ...
Страница 39: ...RUGGEDCOM ROX II CLI User Guide Table of Contents xxxix 19 5 VLANs 752 ...
Страница 40: ...Table of Contents RUGGEDCOM ROX II CLI User Guide xl ...
Страница 46: ...Preface RUGGEDCOM ROX II CLI User Guide xlvi Customer Support ...
Страница 96: ...Chapter 2 Using RUGGEDCOM ROX II RUGGEDCOM ROX II CLI User Guide 50 Accessing Maintenance Mode ...
Страница 170: ...Chapter 5 System Administration RUGGEDCOM ROX II CLI User Guide 124 Deleting a Scheduled Job ...
Страница 256: ...Chapter 6 Security RUGGEDCOM ROX II CLI User Guide 210 Enabling Disabling a Firewall ...
Страница 402: ...Chapter 11 Wireless RUGGEDCOM ROX II CLI User Guide 356 Managing Cellular Modem Profiles ...
Страница 646: ...Chapter 13 Unicast and Multicast Routing RUGGEDCOM ROX II CLI User Guide 600 Deleting a Multicast Group Prefix ...
Страница 732: ...Chapter 15 Network Discovery and Management RUGGEDCOM ROX II CLI User Guide 686 Viewing NETCONF Statistics ...
Страница 790: ...Chapter 17 Time Services RUGGEDCOM ROX II CLI User Guide 744 Deleting a Broadcast Multicast Address ...