An engineer is designing a new data center network so that the topology maintains fewer uplinks to the aggregation layer to reduce STP processing requirements. What data center topology meets the…

The correct answer is D. end of row. In an End of Row (EoR) topology, a shared access switch (or set of switches) is placed at the end of each row of server racks. Servers in the row connect to this single shared switch, which then uplinks to the aggregation layer. Because fewer access switches exist (one per row…

Advanced Data Center Networks

Question

An engineer is designing a new data center network so that the topology maintains fewer uplinks to the aggregation layer to reduce STP processing requirements. What data center topology meets the RFP requirements?

Options

Amesh
Btop of rack
Cstar
Dend of row

How the community answered

(54 responses)

A
4% (2)
B
6% (3)
C
13% (7)
D
78% (42)

Explanation

In an End of Row (EoR) topology, a shared access switch (or set of switches) is placed at the end of each row of server racks. Servers in the row connect to this single shared switch, which then uplinks to the aggregation layer. Because fewer access switches exist (one per row rather than one per rack), there are fewer uplinks to the aggregation layer, which directly reduces the number of STP instances and the overall STP processing burden. In contrast, a Top of Rack (ToR) design places a dedicated switch in every individual rack, multiplying the number of uplinks to aggregation and increasing STP complexity. EoR trades some cabling convenience for reduced switch count and simplified spanning tree.

Topics

#end of row topology#data center design#STP reduction#aggregation uplinks

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