Description
Cisco Catalyst C9300-48UB Switch
High-Scale & Deep Buffer Access | 48-Port Gigabit UPOE (60W) | 32MB Buffer | 480-Gbps Stacking
The Cisco Catalyst C9300-48UB is a premium, high-density stackable enterprise access platform engineered for massive network scalability and mission-critical deployment edges. Driven by the advanced UADP 2.0 XL ASIC, this deep-buffer model doubles the standard packet buffer complex to 32 MB, significantly expanding MAC address tables, ACL limits, and Layer 3 routing thresholds to prevent packet drops during unpredicted network traffic spikes. Outfitted with 48 fixed Gigabit ports pushing up to **60W Cisco Universal PoE (UPOE)**, it delivers clean, high-wattage power to demanding IoT nodes, multi-radio wireless systems, and smart-building systems while maintaining absolute backplane stability.
Licensing & Add-On Options
This specialized hardware includes the permanent, perpetual Network Essentials or Network Advantage base software stack pre-installed locally. To fully integrate the high-scale C9300-48UB into your automated enterprise architecture, choose from these available add-on options:
- Cisco Catalyst / DNA Subscription Add-ons (3, 5, or 7-Year Terms): Available in Essentials or Advantage tiers. Mandatory if utilizing Cisco Catalyst Center (DNA Center) for control plane orchestration. Upgrading to a software Advantage subscription permanently upgrades your hardware's local base stack to Network Advantage capabilities.
- Cisco Meraki Cloud Monitoring Add-on: Onboard this specialized hardware straight into your centralized Meraki cloud dashboard, unlocking comprehensive remote telemetry tools while maintaining native local CLI access paths.
- ThousandEyes Network Monitoring: Software entitlements are bundled natively into the active Cisco DNA Advantage software tier, enabling network engineers to map end-to-end paths from high-scale campus perimeters to multi-cloud ecosystems.
Key Technical Features
? 32MB Deep Packet Buffer
Powered by the UADP 2.0 XL ASIC to supply twice the buffer size of standard 48-port units, keeping high-volume video, voice, and data streams fluid under heavy loads.
? High-Density 60W Cisco UPOE
All 48 copper interfaces deliver up to 60W of power per port—double standard PoE+ caps—backed by an impressive default power supply envelope.
? Stacking Constraints Warning
Supports up to 480 Gbps of stacking bandwidth. Note: Higher-scale "B" switches stack exclusively with other deep-buffer models (e.g., C9300-24UB, 24UXB).
?️ Modular Uplink Versatility
Features a modular network module bay accommodating optional 1G, 10G, 25G, or 40G uplinks to easily adapt as core infrastructure demands change.
? Advanced Perimeter Security
Utilizes Encrypted Traffic Analytics (ETA), AES-256 MACsec encryption, and TrustSec architectures to defend high-volume localized data flows.
? StackPower Resiliency
Incorporate Cisco StackPower to pool and share power supplies across your switch stack, ensuring absolute hardware availability if a unit PSU fails.
Specifications
| Product SKU | C9300-48UB |
| Total Local Ports | 48x 10/100/1000 Ethernet Ports (Cisco UPOE 60W Enabled) |
| Packet Buffer Complex | 32 MB Deep Buffer Architecture (UADP 2.0 XL) |
| Default PoE Budget | 590 Watts (Expandable up to 1440W max via secondary hot-swap power configurations) |
| Switching Capacity | 256 Gbps Standalone / 736 Gbps with Stacking enabled |
| Default Power Supply | PWR-C1-1100WAC (Ships standard to handle high-density deep-buffer power matrices) |
*All images are stock photos. Actual product will vary depending on the options chosen.
