Dell Configuration Guide for the S4048–ON System 9.14.2.5

• Static — Port channels that are statically configured.
• Dynamic — Port channels that are dynamically configured using the link aggregation control protocol (LACP). For details, see Link Aggregation Control Protocol (LACP).

The port channel ID ranges from 1 to 128.

Although the system allows you to assign more number of ports in a port channel, Dell EMC Networking recommends having a maximum of 16 interfaces per port channel.

As soon as you configure a port channel, Dell EMC Networking OS treats it like a physical interface. For example, IEEE 802.1Q tagging is maintained while the physical interface is in the port channel.

Member ports of a LAG are added and programmed into the hardware in a predictable order based on the port ID, instead of in the order in which the ports come up. With this implementation, load balancing yields predictable results across device reloads.

A physical interface can belong to only one port channel at a time.

Each port channel must contain interfaces of the same interface type/speed.

Port channels can contain a mix of 1G/10G/40G. The interface speed that the port channel uses is determined by the first port channel member that is physically up. Dell EMC Networking OS disables the interfaces that do not match the interface speed that the first channel member sets. That first interface may be either the interface that is physically brought up first or was physically operating when interfaces were added to the port channel. For example, if the first operational interface in the port channel is a Tengigabit Ethernet interface, all interfaces at 10000 Mbps are kept up, and all other interfaces that are not set to 10G speed or auto negotiate are disabled.

Dell EMC Networking OS brings up the 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.