Deployment Guide
Field Description
• In Layer 2 port channels, an * (asterisk) indicates which interface is the primary port
of the port channel. The primary port sends out interface PDU.
• In Layer 3 port channels, the primary port is not indicated.
Example
Dell#show int po bri
Codes: L - LACP Port-channel
O - OpenFlow Controller Port-channel
A - Auto Port-channel
I - Internally Lagged
LAG Mode Status Uptime Ports
L 128 L3 down 00:00:00
Dell#
To indicate the LACP fallback, Internally lagged is added to the list. When the LAG auto-congures itself,
the LAG status describes as ‘I’.
Related Commands
show lacp — displays the LACP matrix.
Time Domain Reectometer (TDR) Commands
TDR is useful for troubleshooting an interface that is not establishing a link; either it is apping or not coming up at all. TDR detects open or
short conditions of copper cables on 100/1000/10G Base-T modules.
• tdr-cable-test
• show tdr
Important Points to Remember
• The interface and port must be enabled (congured—see the interface command) before running TDR. An error message is
generated if you have not enabled the interface.
• The interface on the far-end device must be shut down before running TDR.
• Because TDR is an intrusive test on an interface that is not establishing a link, do not run TDR on an interface that is passing trac.
• When testing between two devices, do not run the test on both ends of the cable.
tdr-cable-test
Test the condition of copper cables on 100/1000/10GBase-T modules.
Syntax
tdr-cable-test interface
Parameters
interface Enter the keyword TenGigabitEthernet followed by the slot/port information for the
100/1000/10GBase-T Ethernet interface.
Defaults none
Command Modes EXEC
Supported Modes All Modes
574 Interfaces