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The Cisco Catalyst C9500-48Y4C-A is a high-performance, 1RU rack-mountable switch designed for enterprise campus core and aggregation layers. It is a flagship model in the Catalyst 9500 series, equipped with 48 x 1/10/25G SFP28 ports and 4 x 40/100G QSFP28 uplink ports. Powered by the Cisco UADP 3.0 ASIC and pre-loaded with the Cisco DNA Network Advantage license, it delivers exceptional throughput, advanced security, and comprehensive Layer 3 routing capabilities for modern, high-density networks.
48 x SFP28 Ports: Fixed ports supporting 1G, 10G, and 25G fiber connections, ideal for high-speed server and aggregation links.
4 x QSFP28 Uplinks: Dedicated, non-blocking 40G/100G uplink ports for building resilient, high-bandwidth network backbones.
1RU Form Factor: Compact design maximizes rack space efficiency in data centers and enterprise wiring closets.
UADP 3.0 ASIC: Next-generation chipset providing 3.2 Tbps switching capacity and 1 Bpps (billion packets per second) forwarding rate for wire-speed performance.
High Memory: 16 GB DDR4 DRAM and 16 GB flash memory for large routing tables, extensive policy enforcement, and future feature upgrades.
StackWise Virtual: Supports logical stacking of two physical switches into a single virtual entity, enabling Stateful Switchover (SSO) and Non-Stop Forwarding (NSF) for near-zero downtime.
Scalable Routing: Supports a large MAC address table (64K entries) and extensive routing tables for large-scale deployments.
MACsec-256 Encryption: Line-rate AES-256 encryption on all ports for secure data transmission across the network.
Secure Boot & Trustworthy Computing: Hardware-rooted security to prevent unauthorized firmware tampering and ensure runtime integrity.
Resilient Hardware: Dual redundant, hot-swappable power supplies and fans for continuous operation. Supports TAA compliance and has an industry-leading MTBF.
Advanced Layer 3 Services: Full support for BGP, OSPF, IS-IS, EIGRP, VRF-Lite, MPLS, L3VPN, EVPN, and Segment Routing.
Cisco DNA & SD-Access: Complete compatibility with Cisco DNA Center for network automation, assurance, and end-to-end Software-Defined Access (SDA) segmentation.
Application Intelligence: NBAR2, Advanced NetFlow, and Cisco TrustSec for deep application visibility, traffic analytics, and security group-based access control.
Programmability: Supports NETCONF/RESTCONF/YANG and gNMI for modern, automated network operations.
| Parameter | Detail |
|---|---|
| SKU | C9500-48Y4C-A |
| Fixed Downlink Ports | 48 x SFP28 (1G/10G/25G) |
| Fixed Uplink Ports | 4 x QSFP28 (40G/100G) |
| Switching Capacity | 3.2 Tbps |
| Forwarding Rate | 1 Bpps |
| ASIC | Cisco UADP 3.0 |
| Memory | 16 GB DRAM, 16 GB Flash |
| MAC Address Table | 64,000 entries |
| Jumbo Frames | Up to 9216 bytes |
| Virtual Interfaces (SVIs) | Up to 4000 |
| Redundancy | Dual hot-swappable power supplies & fans; StackWise Virtual |
