Networking

Top-of-Rack (ToR) vs End-of-Row (EoR)

Network Design diagram · made in Skemio

Network diagram comparing Spine switch connecting to Top of Rack switches versus an End of Row chassis distributing to multiple server racks.
Network diagram comparing Spine switch connecting to Top of Rack switches versus an End of Row chassis distributing to multiple server racks.
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What it shows

  • ToR simplifies rack installs with short, cheap Twinax copper connections.
  • EoR consolidates switch management and boosts port utilization per chassis.
  • ToR adds management endpoints; EoR creates thick, complex overhead cable runs.

The takeaway

Choose ToR for modular scale and East-West density; choose EoR to maximize high-cost port utilization.

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