Core switch switching capacity 15Tbps

For a core switch targeting 15 Tbps switching capacity, high-end modular switches like the Cisco Catalyst 9600 Series are suitable, offering up to 25. 6 Tbps full-duplex. Cisco Catalyst 9500 SeriesThe Cisco Catalyst 9500X switches are enterprise-grade fixed core switches with a maximum switching capacity of 12.

8 Tbps full-duplex, slightly below the 15 Tbps target. Key features include: Forwarding performance: 8 billion packets per second (Bpps)Port density: Up to 28 QSFP28 (40/100G) and 60 SFP56 (10/25/50G) nonblocking portsBuffering: 80 MB low-latency buffer plus up to 8 GB High-Bandwidth Memory (HBM) for deep packet bufferingRouting and switching: Full Layer 2/3 support, MPLS, VPNs, NAT, and advanced QoSCPU and memory: Multi-core x86 CPU with 32 GB DDR4 and up to 960 GB SSD for container-based applicationsSecurity: Line-rate 256-bit MACsec and WAN-MACsec encryptionVirtualization: Cisco StackWise Virtual for system scaling and high availabilityWhile highly capable, the 9500X does not meet the 15 Tbps threshold, making it more suitable for high-performance enterprise cores rather than ultra-high-capacity data center cores.

Cisco Catalyst 9600 SeriesFor switching capacities above 15 Tbps, the Cisco Catalyst 9606R chassis is a better fit: Switching capacity: Up to 25. 6 Tbps full-duplex, exceeding the 15 Tbps requirementPer-slot bandwidth: Up to 6. 4 Tbps (3.

2 Tbps full-duplex)Modular design: Supports flexible port configurations and high-density 40/100/200/400G QSFP-DD portsHigh availability: Redundant power supplies, fan trays with dynamic compensation, and NEBS-compliant coolingEnterprise features: Full Layer 2/3 routing, MPLS, VPNs, QoS, and network virtualization supportThe 9600 Series is designed for enterprise campus cores and high-end aggregation, providing scalability, high throughput, and operational flexibility for networks requiring 15 Tbps or more. Considerations for 15 Tbps Core DeploymentPort requirements: Ensure the switch supports the required number of high-speed ports (100G/200G/400G) to aggregate traffic efficiently.

Forwarding rate: Verify that the Bpps performance matches the expected packet load, not just raw Tbps. Redundancy and high availability: Modular chassis with redundant power and cooling is critical for core deployments. Future scalability: Modular switches like the 9600 Series allow incremental upgrades to meet growing traffic demands.

Security and programmability: Hardware-based encryption, SD-Access, and programmable pipelines (P4) enhance network flexibility and protection. In summary, for a 15 Tbps core switch requirement, modular platforms like the Cisco Catalyst 9600 Series are recommended, while fixed-core switches like the 9500X are slightly below the threshold but still suitable for high-performance enterprise cores.