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Zorluk: OrtaNetwork Topology Architectures

A network administrator is designing a two-tier Spine-Leaf (Clos) topology for a data center expansion. Which two physical interconnection rules must be strictly followed in this architectural model? (Select two.)

  1. Spine switches must not connect directly to other spine switches.Cevap
  2. Every leaf switch must connect directly to every spine switch in the fabric.Cevap
  3. C
    Leaf switches must interconnect with adjacent leaf switches to isolate broadcast domains.
  4. D
    Inter-switch links between leaf and spine switches should have STP PortFast configured.

Cevap

In a standard two-tier Spine-Leaf topology, spine switches must never connect directly to other spine switches, and every leaf switch must connect directly to every spine switch in the fabric.
In a standard Spine-Leaf architecture, every leaf switch connects to every spine switch in a full mesh, while spine switches never connect directly to one another and leaf switches do not connect directly to other leaf switches. This ensures deterministic two-hop forwarding between any hosts connected to the leaf layer.

Adım Adım Çözüm

1
Identify the defining structural rules of a two-tier Spine-Leaf (Clos) network topology.
In Spine-Leaf designs, the architecture is a bipartite graph where leaf nodes connect to spine nodes, but nodes within the same tier do not interconnect.
This guarantees equal distance (two hops) between any two leaf-connected endpoints.
2
Evaluate the requirement regarding spine-to-spine connections.
Direct spine-to-spine links violate Clos topology principles.
Spine switches strictly serve as a high-speed forwarding mesh between leaf switches.
3
Evaluate the requirement regarding leaf-to-spine full-mesh connections.
Each leaf switch connects directly to every spine switch.
This structure enables efficient Equal-Cost Multi-Path (ECMP) forwarding across all available upstream links.

Anahtar Kavram

Spine-Leaf (Clos) Interconnection Rules
Tahmini Süre:1m 30s
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Konular

Network Topology Architectures

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