Administrator Guide

Configuring Port Delay
To configure a delayed bring up of all interfaces during switch boot up, use the following command:
• Enter the CONFIGURATION mode.
CONFIGURATION mode
Use the port-delay-restore command and ensure to specify a value between 1 second and 300 seconds.
DellEMC(conf)#port-delay-restore 300
Use the no port-delay-restore command to disable the feature.
DellEMC(conf)#no port-delay-restore
If you would like to turn this feature off for an individual interface, enter the INTERFACE mode and use the no port-delay-restore
command.
DellEMC(config-if)#no port-delay-restore
NOTE: In a stacking environment, the port-delay-restore timer kicks in for each individual stack-unit separately as it
boots up.
Port Channel Interfaces
Port channel interfaces support link aggregation, as described in IEEE Standard 802.3ad.
This section covers the following topics:
• Port Channel Definition and Standards
• Port Channel Benefits
• Port Channel Implementation
• Configuration Tasks for Port Channel Interfaces
Port Channel Definition and Standards
Link aggregation is defined by IEEE 802.3ad as a method of grouping multiple physical interfaces into a single logical interface—a link
aggregation group (LAG) or port channel.
A 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 EMC Networking
OS, a LAG is referred to as a port channel interface.
A port channel provides redundancy by aggregating physical interfaces into one logical interface. If one physical interface goes down in the
port channel, another physical interface carries the traffic.
Port Channel Benefits
A port channel interface provides many benefits, including easy management, link redundancy, and sharing.
Port channels are transparent to network configurations and can be modified and managed as one interface. For example, you configure
one IP address for the group and that IP address is used for all routed traffic on the port channel.
With this feature, you can create larger-capacity interfaces by utilizing a group of lower-speed links. For example, you can build a 50-
Gigabit interface by aggregating five 10-Gigabit Ethernet interfaces together. If one of the five interfaces fails, traffic is redistributed
across the remaining interfaces.
Port Channel Implementation
Dell EMC Networking OS supports static and dynamic port channels.
• Static — Port channels that are statically configured.
Interfaces
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