Company XYZ needs advice in redesigning their legacy Layer 2 infrastructure. Which technology should be included in the design to minimize or avoid convergence delays due to STP or FHRP and provide a loop-free topology?
- Use BFD.
- Use switch clustering in the core/distribution layer.
- Use spanning-tree PortFast.
- Use switch clustering in the access layer.
Answer(s): B
Explanation:
Switch clustering is a technology that allows multiple switches to be grouped together so that they appear as a single logical switch. This can help to improve convergence times by reducing the number of switches that need to be updated when a change occurs.
Spanning-tree PortFast is a feature that allows ports to be put into the forwarding state immediately, bypassing the STP listening and learning states. This can help to improve convergence times, but it can also introduce loops into the network if not used carefully.
BFD is a protocol that provides fast failure detection for Layer 2 and Layer 3 links. This can help to improve convergence times by reducing the time it takes for switches to detect link failures.
FHRP (First Hop Redundancy Protocol) is a protocol that provides redundancy for Layer 2 routing. This can help to improve availability, but it does not directly affect convergence times.
Therefore, the best technology to include in the design to minimize or avoid convergence delays due to STP or FHRP and provide a loop-free topology is switch clustering.
Here are some additional reasons why switch clustering is a good choice for this scenario:
-It can be implemented in the core/distribution layer, which is where STP loops are most likely to occur.
-It is a relatively simple technology to implement and manage.
-It can be used to improve convergence times for both STP and FHRP.
Here are some additional reasons why the other options are not as good a choice:
-Spanning-tree PortFast can introduce loops into the network if not used carefully.
-BFD is a good technology for fast failure detection, but it does not directly affect convergence times.
-FHRP can improve availability, but it does not directly affect convergence times.
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