EtherChannel provides incremental trunk speeds between Fast Ethernet, Gigabit Ethernet, and 10 Gigabit Ethernet. EtherChannel combines multiple Fast Ethernet up to 800Mbps, Gigabit Ethernet up to 8Gbps , and 10 Gigabit Ethernet up to 80Gbps.
Fast EtherChannel (FEC)
Fast EtherChannel is a technology-leveraging, standards-based Fast Ethernet used in parallel to provide the additional bandwidth network backbones require today. It provides flexible, scalable bandwidth with resiliency and load sharing across links for switches, router interfaces and servers. Supports up to eight links per channel.

Gigabit EtherChannel (GEC)
Gigabit EtherChannel is high-performance Ethernet technology that provides gigabit per second transmission rates. It provides flexible, scalable bandwidth with resiliency and load sharing across links for switches, router interfaces and servers. Supports up to eight links per channel.

Link Aggregation Control Protocol (LACP) / 802.3ad

Port Aggregation Protocol (PAgP)
Port aggregation protocol (PAgP) aids in the automatic creation of Fast EtherChannel links. PAgP packets are sent between Fast EtherChannel-capable ports in order to negotiate the forming of a channel.

Fast EtherChannel is a technology-leveraging, standards-based Fast Ethernet used in parallel to provide the additional bandwidth network backbones require today. It provides flexible, scalable bandwidth with resiliency and load sharing across links for switches, router interfaces and servers. Supports up to eight links per channel.
Gigabit EtherChannel (GEC)
Gigabit EtherChannel is high-performance Ethernet technology that provides gigabit per second transmission rates. It provides flexible, scalable bandwidth with resiliency and load sharing across links for switches, router interfaces and servers. Supports up to eight links per channel.
Link Aggregation Control Protocol (LACP) / 802.3ad
Port Aggregation Protocol (PAgP)
Port aggregation protocol (PAgP) aids in the automatic creation of Fast EtherChannel links. PAgP packets are sent between Fast EtherChannel-capable ports in order to negotiate the forming of a channel.