Correct Answer: D
The exhibit shows aFolded IP Clos Architecture, which is also referred to as a3-stage Closnetwork design.
This architecture typically consists of two layers of switches:
* Spine Layer: The top row of switches.
* Leaf Layer: The bottom row of switches.
Step-by-Step Breakdown:
* Clos Architecture:A 3-stage Clos network has two types of devices: spine and leaf. In this design, each leaf switch connects to every spine switch, providing a high level of redundancy and load balancing.
* Stage Explanation:
* Stage 1: The first set of leaf switches.
* Stage 2: The spine switches.
* Stage 3: The second set of leaf switches.
TheFolded Closarchitecture shown here effectively "folds" the 3-stage design by combining the ingress and egress leaf layers into one, reducing it to two visible layers, but still maintaining the overall3-stage architecture.
Juniper Reference:
* IP Clos Architecture: The 3-stage Clos design is commonly used in modern data centers for high availability, redundancy, and scalability.