EtherChannel – Port Link Aggregation

EtherChannel or other vendors call this Smartgroup, is  a port link aggregation technology. In other words, a technology which is used to combine several physical links between switches or routers into one logical connection and treat them as single link.

A connection with a single link.

switch, etherchannel

Add another link to get more than 1 Gbps will not work, because Spanning-tree protocol (STP) will block redundant links to prevent a loop.

etherchannel, stp, spanning-tree

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