JN0-281 · Question #20
What are two reasons why you would deploy an IP fabric instead of a traditional Layer 2 network in a data center? (Choose two.)
The correct answer is C. Layer 3 networks support load balancing. D. Layer 2 networks are susceptible to loops. IP fabrics are Layer 3-centric network designs often used in data centers due to their scalability, efficient routing, and loop-free architecture. Layer 3 Load Balancing: IP fabrics use Equal-Cost Multipath (ECMP) to distribute traffic across multiple paths, providing effective…
Question
What are two reasons why you would deploy an IP fabric instead of a traditional Layer 2 network in a data center? (Choose two.)
Options
- ALayer 2 networks only support a single broadcast domain.
- BIP fabrics are better suited to smaller networks where scale is less important.
- CLayer 3 networks support load balancing.
- DLayer 2 networks are susceptible to loops.
How the community answered
(44 responses)- A5% (2)
- B11% (5)
- C84% (37)
Explanation
IP fabrics are Layer 3-centric network designs often used in data centers due to their scalability, efficient routing, and loop-free architecture. Layer 3 Load Balancing: IP fabrics use Equal-Cost Multipath (ECMP) to distribute traffic across multiple paths, providing effective load balancing and improving bandwidth utilization. This capability is absent in traditional Layer 2 networks, which do not support ECMP for routing decisions. Layer 2 networks are prone to loops because of the lack of TTL (Time-to-Live) mechanisms. Spanning Tree Protocol (STP) is required to prevent loops, but it can introduce inefficiencies by blocking links. In contrast, IP fabrics based on Layer 3 protocols are loop-free and do not need
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