EtherChannel technology only bundles ports of the same type. On a Layer 2 switch, EtherChannel is used to aggregate access ports or trunks.

What is the difference between Layer 2 and Layer 3 EtherChannel?

Layer 2 EtherChannel bundles access or trunk ports between switches or other devices (e.g., servers). Layer 3 EtherChannel bundles routed ports between switches.

What is EtherChannel networking?

EtherChannel is a port link aggregation technology or port-channel architecture used primarily on Cisco switches. It allows grouping of several physical Ethernet links to create one logical Ethernet link for the purpose of providing fault-tolerance and high-speed links between switches, routers and servers.