Spanning Tree Protocol
Because you can connect switches together in any fashion, you can create redundant connections in a network. These are called bridging loops (Figure 4.8).
FIGURE 4.8 A bridging loop
Exam Tip
The CompTIA Network+ exam refers to bridging loops as switching loops. The terms mean the same thing, but bridging loop is more common. Be prepared for either term on the exam.
In the early days of switches, making a bridging loop in a network setup would bring the network crashing down. A frame could get caught in the loop, ...
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