Chapter 7. Aggregating Switch Links
Switch Port Aggregation with EtherChannel—. This section discusses the concept of aggregating, or “bundling,” physical ports into a single logical link. Methods for load-balancing traffic across the physical links also are covered.
EtherChannel Negotiation Protocols—. This section discusses two protocols that dynamically negotiate and control EtherChannels: Port Aggregation Protocol (PAgP), a Cisco proprietary protocol, and Link Aggregation Control Protocol (LACP), a standards-based protocol.
EtherChannel Configuration—. This section discusses the Catalyst switch commands needed to configure EtherChannel. ...