
Chapter 11
| Interface Commands
Cable Diagnostics
– 419 –
◆
This cable test is only accurate for Gigabit Ethernet cables 7 - 100 meters long.
◆
The test takes approximately 1 second. Use the
command to display the results of the test, including common cable failures, as
well as the status and approximate length of each cable pair.
◆
Potential conditions which may be listed by the diagnostics include those listed
below.
■
Pair busy, linked partner in 100BAS-TX forced mode
■
Interpair short
■
Intrapair short
■
Pair open, fault detected
■
Invalid, cable diagnostic routine did not complete successfully
◆
Ports must have auto-negotiation enabled
◆
Ports are linked down while running cable diagnostics.
◆
This cable test is only accurate for Ethernet cables 7 - 100 meters long.
◆
Ports are linked down while running cable diagnostics.
◆
To ensure more accurate measurement of the length to a fault, first disable
power-saving mode (using the
command) on the link partner
before running cable diagnostics.
Example
Console#test cable-diagnostics interface ethernet 1/24
Console#
test loop internal
This command performs an internal loop back test on the specified port.
Syntax
test loop internal interface
interface
interface
ethernet
unit
/
port
unit
- Unit identifier. (Range: 1)
port
- Port number. (Range: 1-28/52)
Command Mode
Privileged Exec
Содержание ECS4120-28F
Страница 36: ...Contents 36...
Страница 38: ...Figures 38...
Страница 46: ...Section I Getting Started 46...
Страница 70: ...Chapter 1 Initial Switch Configuration Setting the System Clock 70...
Страница 86: ...Chapter 2 Using the Command Line Interface CLI Command Groups 86...
Страница 202: ...Chapter 5 SNMP Commands Additional Trap Commands 202...
Страница 210: ...Chapter 6 Remote Monitoring Commands 210...
Страница 216: ...Chapter 7 Flow Sampling Commands 216...
Страница 278: ...Chapter 8 Authentication Commands PPPoE Intermediate Agent 278...
Страница 360: ...Chapter 9 General Security Measures Port based Traffic Segmentation 360...
Страница 384: ...Chapter 10 Access Control Lists ACL Information 384...
Страница 424: ...Chapter 11 Interface Commands Power Savings 424...
Страница 446: ...Chapter 13 Power over Ethernet Commands 446...
Страница 456: ...Chapter 14 Port Mirroring Commands RSPAN Mirroring Commands 456...
Страница 488: ...Chapter 17 UniDirectional Link Detection Commands 488...
Страница 494: ...Chapter 18 Address Table Commands 494...
Страница 554: ...Chapter 20 ERPS Commands 554...
Страница 620: ...Chapter 22 Class of Service Commands Priority Commands Layer 3 and 4 620...
Страница 638: ...Chapter 23 Quality of Service Commands 638...
Страница 772: ...Chapter 25 LLDP Commands 772...
Страница 814: ...Chapter 26 CFM Commands Delay Measure Operations 814...
Страница 826: ...Chapter 27 OAM Commands 826 1 1 00 12 CF 6A 07 F6 000084 Enabled Disabled Enabled Disabled Console...
Страница 836: ...Chapter 28 Domain Name Service Commands 836...
Страница 848: ...Chapter 29 DHCP Commands DHCP Relay Option 82 848...
Страница 902: ...Section III Appendices 902...
Страница 916: ...Glossary 916...
Страница 926: ...CLI Commands 926...
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Страница 938: ...E092017 CS R02...