Concept Guide

– 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
DellEMC#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 Rate Delta
Input bytes: 0 0 Bps 0
Output bytes: 0 0 Bps 0
Input packets: 0 0 pps 0
Output packets: 0 0 pps 0
64B packets: 0 0 pps 0
Over 64B packets: 0 0 pps 0
Over 127B packets: 0 0 pps 0
Over 255B packets: 0 0 pps 0
Over 511B packets: 0 0 pps 0
Over 1023B packets: 0 0 pps 0
Error statistics:
Input underruns: 0 0 pps 0
Input giants: 0 0 pps 0
Input throttles: 0 0 pps 0
Input CRC: 0 0 pps 0
Input IP checksum: 0 0 pps 0
Input overrun: 0 0 pps 0
Output underruns: 0 0 pps 0
Output throttles: 0 0 pps 0
m - Change mode c - Clear screen
l - Page up a - Page down
T - Increase refresh interval t - Decrease refresh interval
q - Quit
q
DellEMC#
Maintenance Using TDR
The time domain reectometer (TDR) is supported on all Dell EMC Networking switches.
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 reection of the signal that returns. By examining the reection, 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 apping or not coming up. TDR is not
intended to be used on an interface that is passing trac. 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.
Interfaces
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