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Command Line Reference Guide

ManualsBrandsDell ManualsComputer equipmentPowerEdge M IO Aggregator
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Port Channel Commands
A Link Aggregation Group (LAG) is a group of links that appear to a MAC client as if they were a single link
according to IEEE 802.3ad. In Dell Networking OS, a LAG is referred to as a Port Channel.
• For the Aggregator, the maximum port channel ID is 128 and the maximum members per port
channel is 16.
Because each port can be assigned to only one Port Channel, and each Port Channel must have at least
one port, some of those nominally available Port Channels might have no function because they could
have no members if there are not enough ports installed. In the Aggregator, stack members can provide
those ports.
The commands in this section are specific to Port Channel interfaces:
• auto vlan
• group
• monitor interface
• show config (from INTERFACE RANGE mode)
• show interfaces port-channel
NOTE: The Dell Networking OS implementation of LAG or Port Channel requires that you configure
a LAG on both switches manually. For information about Dell Networking OS link aggregation
control protocol (LACP) for dynamic LAGs, refer to the Link Aggregation Control Protocol (LACP)
chapter. For more information about configuring and using Port Channels, refer to the Dell
PowerEdge M I/O Aggregator Configuration Guide
Time Domain Reflectometer (TDR) Commands
TDR is useful for troubleshooting an interface that is not establishing a link; either it is flapping 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 (configured—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 traffic.
• When testing between two devices, do not run the test on both ends of the cable.
Interfaces
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