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The Cisco Catalyst 9300-48S-A is a high-density, stackable fiber switch designed for enterprise aggregation, distribution, and campus backbone deployments. It features 48 x 1G SFP fiber ports and a modular uplink bay, optimized for long-distance, EMI-resistant connectivity. The "-A" suffix includes the Cisco DNA Network Advantage license, unlocking full Layer 3 routing, advanced security, and end-to-end automation.
48 x 1G SFP Ports: Full gigabit fiber downlink configuration supporting single-mode/multimode transceivers for long-reach connections.
Modular Uplink Module: 1 x hot-swappable slot supporting 10G/25G/40G SFP+/QSFP modules (e.g., C9300-NM-2Q, C9300X-NM-8Y) for scalable uplinks.
Non-PoE Design: Optimized for pure data switching in fiber-heavy environments.
StackWise-480: Stack up to 8 switches as a single logical unit with 480 Gbps stacking bandwidth.
StackPower: Power supply sharing across the stack for N+1 redundancy.
Non-Stop Forwarding (NSF/SSO): Sub-50ms failover for zero downtime during stack transitions.
MACsec-256 Encryption: Line-rate hop-by-hop security for all fiber and uplink ports.
Secure Boot & Image Signing: Prevents unauthorized firmware and tampering.
TrustSec & SD-Access: Network segmentation and policy-based access control.
IPsec Hardware Acceleration: Secure site-to-site and cloud connectivity.
Encrypted Traffic Analytics (ETA): Detects malware in encrypted traffic.
UADP 2.0 ASIC: Wire-speed Layer 2/3 switching with robust QoS.
Full Layer 3 Routing: OSPF, EIGRP, BGP, VRF-Lite, and IPv6 support.
Switching Capacity: 256 Gbps (single) / 736 Gbps (stacked).
Forwarding Rate: 190.47 Mpps (single) / 553.42 Mpps (stacked).
Cisco IOS XE: Programmable OS with NETCONF/YANG for model-driven automation.
Cisco DNA Advantage: Full analytics, assurance, and SD-Access via DNA Center.
Flexible NetFlow (FNF): Deep traffic visibility for monitoring and threat detection.
| Parameter | Specification |
|---|---|
| SKU | C9300-48S-A |
| Fixed Ports | 48 x 1G SFP (Gigabit fiber) |
| Uplink Slot | 1 x modular bay (10G/25G/40G) |
| PoE | None |
| Switching Capacity | 256 Gbps (single); 736 Gbps (stack) |
| Forwarding Rate | 190.47 Mpps (single); 553.42 Mpps (stack) |
| Stacking | StackWise-480 (up to 8 switches) |
| MAC Address Table | 32,000 entries |
| IPv4 Routes | 32,000 |
| IPv6 Routes | 16,000 |
| Memory | 8 GB DRAM, 16 GB Flash |
|
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