10/100/1000 Mbps Interfaces In Port Channels; Configuration Tasks For Port Channel Interfaces - Dell S4820T Configuration Manual

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at 1000 Mbps are kept up, and all 10/100/1000 interfaces that are not set to 1000 speed or auto

negotiate are disabled.

Dell Networking OS brings up 10/100/1000 interfaces that are set to auto negotiate so that their speed is

identical to the speed of the first channel member in the port channel.

10/100/1000 Mbps Interfaces in Port Channels

When both 10/100/1000 interfaces and GigE interfaces are added to a port channel, the interfaces must

share a common speed. When interfaces have a configured speed different from the port channel speed,

the software disables those interfaces.

The common speed is determined when the port channel is first enabled. At that time, the software

checks the first interface listed in the port channel configuration. If you enabled that interface, its speed

configuration becomes the common speed of the port channel. If the other interfaces configured in that

port channel are configured with a different speed, Dell Networking OS disables them.

For example, if four interfaces (TenGig 1/1, 1/2, 1/3 and 1/4) in which Gi 1/1 and Gi 1/2are set to speed

1000 Mb/s and the others (te 1/3 and 1/4)are set to 10000 Mb/s, with all interfaces enabled, and you add

them to a port channel by entering channel-member tengigabitethernet 1/1-4 while in port

channel interface mode, and Dell Networking OS determines if the first interface specified (TenGig 1/1) is

up. After it is up, the common speed of the port channel is 1000 Mb/s. Dell Networking OS disables those

interfaces configured with speed 10000 Mb/s or whose speed is 10000 Mb/s as a result of auto-

negotiation.

In this example, you can change the common speed of the port channel by changing its configuration so

the first enabled interface referenced in the configuration is a 1000 Mb/s speed interface. You can also

change the common speed of the port channel here by setting the speed of the Te 1/1 interface to 1000

To configure a port channel (LAG), use the commands similar to those found in physical interfaces. By

default, no port channels are configured in the startup configuration.

These are the mandatory and optional configuration tasks:

Creating a Port Channel

Adding a Physical Interface to a Port Channel

Reassigning an Interface to a New Port Channel

Configuring the Minimum Oper Up Links in a Port Channel

Adding or Removing a Port Channel from a VLAN

Assigning an IP Address to a Port Channel

Deleting or Disabling a Port Channel

Load Balancing Through Port Channels