Maintenance Using Tdr - Dell S3048-ON Configuration Manual

• For a 1-GigabitEthernet interface, enter the keyword GigabitEthernet then the slot/port information.
• For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the slot/port information.
Example of the monitor interface Command
The information displays in a continuous run, refreshing every 2 seconds by default. To manage the output, use the following keys.
• m — Change mode
• l — Page up
• T — Increase refresh interval (by 1 second)
• t — Decrease refresh interval (by 1 second)
• c — Clear screen
• a — Page down
• q — Quit
Dell#monitor interface Gi 3/1
Dell uptime is 1 day(s), 4 hour(s), 31 minute(s)
Monitor time: 00:00:00 Refresh Intvl.: 2s
Interface: Gi 3/1, Disabled, Link is Down, Linespeed is 1000 Mbit
Traffic statistics: Current
Input bytes:
Output bytes:
Input packets:
Output packets:
64B packets:
Over 64B packets:
Over 127B packets:
Over 255B packets:
Over 511B packets:
Over 1023B packets:
Error statistics:
Input underruns:
Input giants:
Input throttles:
Input CRC:
Input IP checksum:
Input overrun:
Output underruns:
Output throttles:
m - Change mode
l - Page up
T - Increase refresh interval
q - Quit
q
Dell#

Maintenance Using TDR

The time domain reflectometer (TDR) is supported on all Dell Networking switch/routers.
TDR is an assistance tool to resolve link issues that helps detect obvious open or short conditions within any of the four copper pairs. TDR
sends a signal onto the physical cable and examines the reflection of the signal that returns. By examining the reflection, TDR is able to
indicate whether there is a cable fault (when the cable is broken, becomes unterminated, or if a transceiver is unplugged).
TDR is useful for troubleshooting an interface that is not establishing a link; that is, when the link is flapping or not coming up. TDR is not
intended to be used on an interface that is passing traffic. When a TDR test is run on a physical cable, it is important to shut down the port
on the far end of the cable. Otherwise, it may lead to incorrect test results.
344 Interfaces
Rate Delta
0 0 Bps 0
0 0 Bps 0
0 0 pps 0
0 0 pps 0
0 0 pps 0
0 0 pps 0
0 0 pps 0
0 0 pps 0
0 0 pps 0
0 0 pps 0
0 0 pps 0
0 0 pps 0
0 0 pps 0
0 0 pps 0
0 0 pps 0
0 0 pps 0
0 0 pps 0
0 0 pps 0
c - Clear screen
a - Page down
t - Decrease refresh interval