Cisco Catalyst vs Juniper EX: Access Switches

Catalyst 9300 vs EX4400: A Head-to-Head Comparison of Campus Workhorses

The Cisco Catalyst 9300 and Juniper EX4400 are the world's two best-selling campus access switches in their category in 2026. Both target the same segment: enterprises with 100-2000 users, 48× 1G PoE++ ports, 25G/100G uplinks, stacking/Virtual Chassis, MACsec, and cloud management. Their hardware performance is equivalent. The decision comes down to 5 criteria: price, ecosystem, automation, skills, and scalability. This guide provides a practical comparison.

Equivalent Model Comparison

• Cisco Catalyst 9300-48P-A: 48× 1G PoE+, modular 4×10G uplinks, StackWise-480, MACsec 256, DNA Advantage required. OPTINOC price approximately €7,500 excluding VAT + DNA for 48 ports × €25/year × 5 years = €13,500 over 5 years.
• Juniper EX4400-48P: 48× 1G PoE++ 90W (better than PoE+), 4× 25G SFP28 + 2× 100G QSFP28 uplinks, 10-unit Virtual Chassis, MACsec 256, Junos OS included. OPTINOC price approximately €5,800 excluding VAT; optional Mist AI at €100/port/year × 5 = €24,000 maximum (or free in standalone mode).

Hardware Performance

• Forwarding throughput: Catalyst 9300 = 176 Gbps | EX4400 = 160 Gbps. Equivalent.
• Latency: 9300 = 2-3µs | EX4400 = 1-2µs. Advantage: EX4400.
• PoE budget: 9300-48P = 822W (single PSU) or 1100W (dual PSU) | EX4400-48P = 1440W. Advantage: EX4400 (+30% headroom).
• Maximum uplinks: 9300 via C9300-NM-2Y (2×25G) or C9300-NM-2C (2×40G) modules | EX4400 with native 4×25G + 2×100G. Advantage: EX4400 (more native 100G uplinks).

Stacking: StackWise vs Virtual Chassis

Cisco StackWise-480

• 480 Gbps backplane (ring topology), maximum 8 switches.
• Proprietary STACK-T1 cable (approximately €400 each).
• ISSU (non-disruptive upgrade) with DNA Advantage.

Juniper Virtual Chassis

• Maximum 10 switches via dedicated VCP ports or standard SFP+.
• VC bandwidth: 80-320 Gbps depending on the configuration.
• No proprietary cable—savings on VC cabling through the use of standard SFP+.
• Mixed VC (EX4300 + EX4400) is supported for gradual migration.

Automation: DNA vs Junos + Mist AI

• Cisco DNA Center / Catalyst Center: physical appliance or VM (€50-150K investment). SD-Access, TrustSec/SGT segmentation, and Assurance. Powerful but complex to deploy.
• Juniper Mist AI: cloud SaaS, per-device licensing, and zero-touch deployment. Marvis AI provides troubleshooting in natural language. Modern and accessible.
• Junos CLI + Ansible: powerful for scripting-first teams. Native atomic commits and 49-level rollback.

5-Year TCO (100 Switches Deployed)

• Cisco Catalyst 9300-48P-A: 100× €7,500 + DNA Advantage for 4,800 ports × €25 × 5 = €1,350,000.
• Juniper EX4400-48P + Mist: 100× €5,800 + Mist for 100 devices × €100 × 5 = €630,000.
• Difference: €720,000 in savings with Juniper over 5 years. Even after accounting for training and potential recruitment, Juniper is significantly less expensive.

Recommendation by Organization Profile

• Existing Cisco environment with CCNP expertise: remain with Catalyst 9300. Migration costs would be prohibitive.
• New deployment where budget matters: Juniper EX4400 + Mist. Savings of 40-50%.
• Need SD-Access campus segmentation: Cisco (more mature solution).
• Need modern cloud automation: Juniper Mist AI.
• Recruitment in France: Cisco skills are easier to source (more certified candidates).

OPTINOC distributes both vendors' products with manufacturer warranties. Free customized TCO comparison.