Tuesday, February 25, 2020

Port Channels

Fast EtherChannel (FEC)
Gigabit EtherChannel (GEC)

Configuration


config-if# channel-group 1 mode on

Load Balancing


config# port-channel load-balance <type>

Discovery


Port Aggregation Protocol (PAgP)


config-if# channel-group 1 mode [auto| desirable]

Link Aggregation Control Protocol (LACP)


config-if# channel-group 1 mode [active|passive]

Requirements


Same speed and Duplex
If not trunking then same access VLAN
If trunking, same trunk type, same allowed VLANs and same native VLAN
Same STP cost per VLAN on all links in channel
No SPAN & RSPAN

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