A city fears broadcast storms if it stretches Layer-2 segments between data centers. Which L2-versus-L3 stretch tradeoff should guide the decision?
Select an answer to reveal the explanation.
Short Explanation
Stretching L2 is stretching the storm radius. L3 stretch keeps broadcasts local per site; that is the core risk tradeoff the city is worrying about.
Full Explanation
Extending Layer-2 across DCI enlarges the failure and flood domain to include remote sites, increasing exposure to storms and loops if controls are weak. Layer-3 stretch contains broadcasts within each site while still offering IP reachability. That risk tradeoff is central to L2 versus L3 stretch decisions on the DCI domain.