EtherChannel: A Technology for High-Speed Link Aggregation and Redundancy - Prof. Smith, Slides of Computer Networks

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EtherChannel

What is EtherChannel

EtherChannel is a port link aggregation technology in which multiple physical

port links are grouped into one logical link.

• (^) It is used to provide high speed links and redundancy.
• (^) Maximum of 8 links can be aggregated to form a single logical link.

Advantages of EtherChannel

EtherChannel provides redundancy because the overall link is seen as one logical

connection.

• (^) Additionally, the loss of one physical link within the channel does not create a

change in the topology; therefore a spanning tree recalculation is not required.

Assuming at least one physical link is present; the EtherChannel remains

functional, even if its overall throughput decreases because of a lost link within

the EtherChannel.

Benefits of using EtherChannel

Increased Bandwidth

Provides Redundancy

Load Balance Traffic

Provides Redundancy

Since there are many Ethernet links combined into one logical channel, it

automatically allows more available links in case one or more links go down.

Load Balance Traffic

EtherChannel balances the traffic load across the links, thereby increasing

efficiency on your networks.