Which IWAN design model provides an SLA guarantee at the lowest cost?

Question

Options

• Adual hybrid with PLR
• Bdual MPLS
• Chybrid
• Ddual Internet

• A
  3% (1)
• B
  3% (1)
• C
  83% (25)
• D
  10% (3)

Explanation

In Cisco's Intelligent WAN (IWAN) framework, the Hybrid model combines one MPLS link with one Internet broadband link. This strikes the optimal balance between SLA guarantee and cost: the MPLS link provides the SLA guarantee (quality, latency, jitter commitments from the provider), while the Internet link provides additional low-cost bandwidth and redundancy. Dual MPLS (Option B) provides strong SLA but at the highest cost since two MPLS circuits are required. Dual Internet (Option D) is the lowest cost but provides no SLA guarantee since the public Internet offers no quality commitments. Dual Hybrid with PLR (Option A) provides the highest availability and performance guarantees but is the most expensive and complex. The single hybrid model therefore delivers SLA assurance at the lowest possible cost among the options that actually guarantee an SLA.

No community discussion yet for this question.