Enterprise core switch: Cisco Catalyst 9500 vs Juniper EX4600

The campus core switch: the network's central hub

The campus core switch is the most critical component of an enterprise network. It aggregates the distribution switches, which in turn aggregate the access switches, routes traffic between VLANs, and connects to the perimeter firewall. A core failure brings the entire campus down. This is why the core is ALWAYS deployed as an HA pair using 2 switches with MLAG or VSS.

The two market leaders for 25G/100G campus core deployments in 2026 are the Cisco Catalyst 9500 and Juniper EX4650, or its successor, the EX4700. Let us compare them in practical terms.

Cisco Catalyst 9500

Product range and positioning

• C9500-24Y4C: 24× 25G SFP28 + 4× 100G QSFP28. Designed for medium-sized campus distribution. OPTINOC price: ~18 000€ excluding VAT.
• C9500-48Y4C: 48× 25G + 4× 100G. Designed for large campuses. Price: ~22 000€ excluding VAT.
• C9500-32C: 32× 100G QSFP28. Designed for large campus cores or small data centers. Price: ~28 000€ excluding VAT.
• C9500-32QC: 32× 100G or 64× 40G with reconfigurable ports. Flexible configuration. Price: ~30 000€ excluding VAT.

Key features

• UADP 3.0 silicon: the latest generation.
• SSO (Stateful Switchover): in-chassis redundancy with sub-second failover.
• ISSU (In-Service Software Upgrade): nondisruptive upgrades on HA models.
• SD-Access ready: can operate as a border node or control plane node.
• Encrypted Traffic Analytics (ETA): threat detection within encrypted traffic.
• MACsec 256: hop-by-hop L2 encryption.
• Mandatory DNA Advantage license (~25€/port/year).

Juniper EX4650

• EX4650-48Y: 48× 10/25G SFP28 + 8× 100G QSFP28. 550ns latency. Price: ~12 000-15 000€ excluding VAT.
• Virtual Chassis supporting up to 4 switches.
• Junos OS: atomic commits and Apstra compatibility for campus fabrics.
• No mandatory recurring license fees; Junos is included.

Direct comparison

• Latency: EX4650 = 550ns, the better result, vs C9500-48Y4C at ~1.5µs.
• Price for an equivalent configuration: EX4650-48Y (12-15K€) vs C9500-48Y4C (22K€). The EX4650 costs 35% less.
• Licensing: Juniper = 0€/port/year with Junos included, vs Cisco = 25€/port/year with DNA Advantage required.
• Ecosystem: Cisco = ACI + Catalyst Center + SD-Access. Juniper = multi-vendor Apstra + Mist AI.
• Availability of expertise: Cisco skills are far more widespread in France.

5-year TCO for a campus core (HA pair)

• Cisco: 2× C9500-48Y4C (44K€) + DNA Advantage licenses for 48 ports × 25€ × 5 years = 50K€. Total: ~94K€.
• Juniper: 2× EX4650-48Y (30K€) + Junos included + Mist for 48 ports × 100€ × 5 years (optional) = 54K€. Total: ~54K€.
• Difference: 40K€ in savings with Juniper over 5 years.

Recommendations

• For an existing Cisco environment with SD-Access, remain with the Catalyst 9500.
• For a new deployment with no legacy constraints, choose the EX4650 with Apstra or Mist.
• If budget is the deciding factor, choose Juniper for 40% savings.
• If the in-house team has Cisco-only expertise, choose the Catalyst 9500.