Chapter 5
Port-Channels, Virtual Port-Channels, and FabricPath
This chapter covers the following topics:
Virtual Port-Channel Plus (vPC+)
Proper network design takes into account single points of failure by ensuring that alternate paths and devices can forward traffic in case of failure. Routing protocols make sure that redundant paths can still be consumed because of equal-cost multipath (ECMP). However, Spanning Tree Protocol (STP) stops forwarding on redundant links between switches to prevent forwarding loops.
Although STP is beneficial, it limits the amount of bandwidth to be achieved between switches. Port-channels provide a way to combine multiple physical links into a virtual link ...
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