300-320 · Question #356
An engineer chose to design an architecture where distribution switches are in VSS and are connected to access switches using Multichassis Etherchannel. What is the resulting topology?
The correct answer is D. Star. When two distribution switches form a VSS pair, they appear as a single logical switch to the rest of the network. Each access switch uplinks to this one logical entity via a single MEC bundle. From a topology perspective, all access switches radiate outward from one central…
Question
An engineer chose to design an architecture where distribution switches are in VSS and are connected to access switches using Multichassis Etherchannel. What is the resulting topology?
Options
- ALooped
- BRing
- CHybrid
- DStar
How the community answered
(29 responses)- A7% (2)
- B3% (1)
- C3% (1)
- D86% (25)
Explanation
When two distribution switches form a VSS pair, they appear as a single logical switch to the rest of the network. Each access switch uplinks to this one logical entity via a single MEC bundle. From a topology perspective, all access switches radiate outward from one central logical node (the VSS pair), which is the definition of a star topology. Because STP sees no loops, no ports are blocked-all links are fully active. This is a key design advantage: the classic dual-homed access layer triangle collapses into a clean, loop-free star.
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