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Zorluk: OrtaNetwork Topology Architectures

An enterprise network engineering team is upgrading a data center fabric to support high-density East-West microsegmentation traffic using a Spine-Leaf architecture. Which of the following statements accurately characterize the topology rules and traffic handling of a standard two-tier Spine-Leaf design? (Select TWO.)

  1. Every leaf switch connects to every spine switch, and spine switches do not connect directly to each other.Cevap
  2. Traffic traveling between endpoints connected to different leaf switches experiences a consistent, predictable hop count across the fabric.Cevap
  3. C
    End-user servers and virtual machine hypervisors are attached directly to spine switches to maximize uplink bandwidth.
  4. D
    Inter-switch trunk connections between spine switches require PortFast to accelerate spanning tree convergence across the core.

Cevap

The correct statements are: 1) Every leaf switch connects to every spine switch, and spine switches do not connect directly to each other; and 2) Traffic traveling between endpoints connected to different leaf switches experiences a consistent, predictable hop count across the fabric.
In a standard two-tier Spine-Leaf architecture, every leaf switch connects to every spine switch, and spine switches do not connect directly to each other. This creates a uniform bipartite topology where any endpoint on a leaf switch reaches an endpoint on another leaf switch in exactly three hops (Leaf -> Spine -> Leaf), yielding consistent and predictable latency for East-West traffic.

Adım Adım Çözüm

1
Analyze Spine-Leaf physical connectivity rules
Confirm that Spine-Leaf fabrics require a bipartite connection pattern where leaf switches connect to all spine switches, while spine-to-spine and leaf-to-leaf direct links are omitted.
This structural pattern allows Equal-Cost Multi-Pathing (ECMP) to load-balance traffic dynamically across all available spine paths.
2
Evaluate traffic path consistency for East-West data flows
Determine that any leaf-to-leaf communication crosses exactly one spine switch.
Uniform path lengths prevent latency variance for inter-server communication.
3
Evaluate attachment points for endpoints and hypervisors
Identify that servers, hypervisors, and security appliances attach strictly to leaf switches (access layer of the fabric).
Attaching hosts to spine switches breaks the bipartite Clos architecture and compromises ECMP forwarding.

Anahtar Kavram

Spine-Leaf Topology Connectivity & Traffic Dynamics
Tahmini Süre:1m 30s
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Network Topology Architectures

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