An EtherChannel is the aggregation of multiple physical channels into a single logical connection.
The single logical connection is referred to as a port channel.
You can configure the port channel to operate as a Layer 3 interface on some switches.
When assigned with an IP address, the port channel becomes the logical Layer 3 interface.
If any single link of the channel fails, the port channel interface is still accessible through the other links.
Layer 3 EtherChannel operation is the same as Layer 2 EtherChannels for traffic distribution and channel establishment.
An EtherChannel offers the capability to bond multiple physical connections for greater throughput for links that carry traffic for multiple hosts. ...