An EtherChannel is comprised of physical, individual FastEthernet, GigabitEthernet, or Ten-GigabitEthernet (10Gbps) links that are bundled together into a single logical link, as illustrated in Figure 33.1 below. An EtherChannel comprised of FastEthernet links is referred to as a FastEtherChannel (FEC); an EtherChannel comprised of GigabitEthernet links is referred to as a GigabitEtherChannel (GEC); and, finally, an EtherChannel comprised of Ten-GigabitEthernet links is referred to as a Ten-GigabitEtherChannel (10GEC):
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