200G QSFP56 Breakout AOC
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200G QSFP56 Breakout AOC Overview
The 200G QSFP56 Breakout AOC category contains the Q200-2Q100-A, a 1–100m active optical breakout cable that divides one 200G QSFP56 interface into two 100G QSFP56 branches for InfiniBand HDR systems. It enables one HDR switch port to operate as two HDR100 ports and supports cross-connections between top-of-rack and spine switches. This configuration doubles the available port count for non-blocking fat-tree networks and can remove a switching tier from 1,600- to 3,200-port HDR100 clusters, reducing cluster latency, CAPEX, and OPEX.
FAQ
- How are the three QSFP56 connectors arranged on the Q200-2Q100-A active optical breakout cable?
It provides one 200G QSFP56 connector on the trunk side and two 100G QSFP56 connectors on the breakout side. The assembly creates two separate 100G branches from one 200G physical port.
- Does Q200-2Q100-A split one 200G InfiniBand HDR port into two independently usable HDR100 links?
Yes. The 200G side carries four 50G PAM4 lanes, while each 100G branch receives two 50G PAM4 lanes. The connected 200G port must operate in 2×100G breakout mode for the branches to function as separate HDR100 links.
- Can Q200-2Q100-A connect one 200G QSFP56 switch port to two separate 100G QSFP56 endpoints?
Yes. Each branch terminates in its own 100G QSFP56 connector, allowing one breakout-enabled 200G switch port to connect to two compatible HDR100 endpoints, such as two server adapters or two switch ports.
- What cable-length range does Q200-2Q100-A provide for short and extended data-center connections?
From 1m to 100m. The available range supports short connections inside a rack as well as longer links between compatible QSFP56 ports while retaining the same 200G-to-2×100G breakout configuration.
- Does Q200-2Q100-A require separate optical transceivers and detachable fiber patch cords?
No. Q200-2Q100-A is an integrated active optical cable with the QSFP56 connectors permanently attached. It plugs directly into compatible ports without separate optical modules or an external fiber jumper.
- How does Q200-2Q100-A increase port density in non-blocking InfiniBand HDR100 fat-tree networks?
It allows one 200G HDR switch port to operate as two 100G HDR100 ports, doubling the available logical port count at that connection point. In supported 1,600- to 3,200-port designs, this topology can remove one switching tier and reduce cluster latency and infrastructure requirements.
