16 EtherChannel
This chapter covers
- How EtherChannel combines redundant links into a single logical link
- Static and dynamic EtherChannel configuration
- How traffic is load-balanced over the physical links of an EtherChannel
- Using Layer 3 EtherChannel to provide redundant Layer 3 connections
In the previous two chapters on STP, we emphasized the essential role of STP in preventing Layer 2 loops in a LAN with redundant connections. However, the downside of STP is that all redundant links are disabled; they provide essential redundancy in a LAN but will only be used to forward traffic if an active link fails.
In this chapter, we will cover EtherChannel, a technology that helps to overcome this limitation by allowing multiple physical links to be ...
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