C9300-48UB-E - Cisco Catalyst 9300 Switch
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C9300-48UB-E
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C9300-48UB-E Overview
Catalyst 9300 48-port UPOE Deep Buffer, Network Essentials C9300-48UB-E
Overview
The Cisco Catalyst 9300 Series switches are Cisco’s lead stackable enterprise switching platform built for security, IoT, mobility, and cloud. The Catalyst 9300 Series is the first optimized platform for high-density Wi-Fi 6 and 802.11ac Wave2. It sets new maximums for network scale. These switches are also ready for the future, with an x86 CPU architecture and more memory, enabling them to host containers and run third-party applications and scripts natively within the switch. The Catalyst 9300 Series is designed for Cisco StackWise technology, providing flexible deployment with support for nonstop forwarding with Stateful Switchover (NSF/SSO), for the most resilient architecture in a stackable (sub-50-ms) solution. The highly resilient and efficient power architecture features Cisco StackPower, which delivers high-density Power over Ethernet Plus (PoE+), 60W Cisco Universal Power over Ethernet (Cisco UPOE) and 90W Cisco UPOE®+ ports.
Quick Specs
| Product Code | C9300-48UB-E |
| Product Description | Catalyst 9300 48-port UPOE Deep Buffer, Network Essentials |
| Total 10/100/1000,Multigigabit copper or SFP Fiber | 48 Cisco UPOE |
| Uplink Configuration | Modular Uplinks |
| Default AC power supply | 1100W AC |
| Available PoE power | 822W |
| Switching capacity | 256 Gbps |
| Switching capacity with stacking | 736 Gbps |
| Forwarding rate | 190.48 Mpps |
| Forwarding rate with stacking | 547.62 Mpps |
The Accessories
| Product number | Description |
| Network module | |
| C9300-NM-4G | Catalyst 9300 Series 4x 1G Network Module |
| C9300-NM-4M | Catalyst 9300 Series 4x Multigigabit Network Module |
| C9300-NM-8X | Catalyst 9300 Series 8x 10G Network Module |
| C9300-NM-2Q | Catalyst 9300 Series 2x 40G Network Module |
| C9300-NM-2Y | Catalyst 9300 Series 2x 25G Network Module |
| Stacking accessories | |
| Data stack 50 cm (cable option with C9300 SKUs) | |
| STACK-T1-1M | Data stack 1m (cable option with C9300 SKUs) |
| STACK-T1-3M | Data stack 3m (cable option with C9300 SKUs) |
| C9300L-STACK-KIT | Stack kit for C9300L SKUs only: Two data stack adapters and one data stack cable |
| STACK-T3-50CM | Data stack 50cm cable (default cable with C9300L Stack Kit) |
| STACK-T3-1M | Data stack 1m cable (cable option with C9300L Stack Kit) |
| STACK-T3-3M | Data stack 3m cable (cable option with C9300L Stack Kit) |
Compare to Similar Items
| Product Code | C9300-24UB-E= | C9300-24UXB-E= | C9300-48UB-E |
| Product Description | Catalyst 9300 higher scale 24-port modular uplinks UPOE, Network Essentials | Catalyst 9300 higher scale 24-port modular uplinks mGig UPOE, Network Essentials | Catalyst 9300 48-port UPOE Deep Buffer, Network Essentials |
| Total 10/100/1000,Multigigabit copper or SFP Fiber | 24 Cisco UPOE | 24 Multigigabit Cisco UPOE (100M, 1G, 2.5G, 5G, or 10 Gbps) | 48 Cisco UPOE |
| Uplink Configuration | Modular Uplinks | Modular Uplinks | Modular Uplinks |
| Default AC power supply | 1100W AC | 1100W AC | 1100W AC |
| Available PoE power | 830W | 560W | 822W |
| Switching capacity | 208 Gbps | 640 Gbps | 256 Gbps |
| Switching capacity with stacking | 688 Gbps | 1120 Gbps | 736 Gbps |
| Forwarding rate | 154.76 Mpps | 476.19 Mpps | 190.48 Mpps |
| Forwarding rate with stacking | 511.90 Mpps | 833.33 Mpps | 547.62 Mpps |
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Specification
C9300-48UB-E Specification
C9300-48UB-E Specification | ||
Product Description | Catalyst 9300 48-port UPOE Deep Buffer, Network Essentials | |
FRU Power Supply | Yes | |
FRU Fans | Yes | |
Modular Uplinks | Yes | |
Stacking Bandwidth Support | 480 Gbps | |
Cisco StackPower | Yes | |
Catalyst 9800 Embedded WLC | Yes (200 APs) | |
SD-Access Support | Yes (256 Virtual Networks) | |
Total 10/100/1000,Multigigabit copper or SFP Fiber | 48 Cisco UPOE | |
Uplink Configuration | Modular Uplinks | |
Default AC power supply | 1100W AC | |
Available PoE power | 822W | |
Total number of MAC addresses | 32,000 | |
Total number of IPv4 routes (ARP plus learned routes) | 32,000 (24,000 direct routes and 8000 indirect routes) | |
IPv6 routing entries | 16,000 | |
Multicast routing scale | 8,000 | |
QoS scale entries | 5,120 | |
ACL scale entries | 5,120 | |
Packet buffer per SKU | 16 MB buffer for 24- or 48-port Gigabit Ethernet models 32 MB buffer for 24 and 48-port Multigigabit | |
FNF entries | 64,000 flow on 24- and 48-port Gigabit Ethernet models 128,000 flows on 24-port Multigigabit | |
DRAM | 8 GB | |
Flash | 16 GB | |
VLAN IDs | 4094 | |
Total Switched Virtual Interfaces (SVIs) | 1000 | |
Jumbo frames | 9198 bytes | |
Total routed ports per Catalyst 9300 Series stack | 448 | |
Switching capacity | 256 Gbps | |
Switching capacity with stacking | 736 Gbps | |
Forwarding rate | 190.48 Mpps | |
Forwarding rate with stacking | 547.62 Mpps | |
Dimensions (H x W x D) inches | Chassis only | 1.73 x 17.5 x 16.1 |
W/ Default Power Supply | 1.73 x 17.5 x 19.2 | |
W/ 1100W Power Supply | 1.73 x 17.5 x 19.2 | |
Mean Time Between Failures–MTBF (hours) | 337,170 | |
Acoustic noise Measured per ISO 7779 and declared per ISO 9296 Bystander positions operating to an ambient temperature of 25°C
| With AC power supply (with 24 PoE+ ports loaded for C9300 SKUs) • LpA: 45dB typical, 48 dB max • LwA: 5.6B typical, 5.9B max With AC power supply (with half the number of PoE+ ports loaded for C9300L SKUs) • LpA: 44dB typical, 47 dB max • LwA: 5.5B typical, 5.8B max Typical: Noise emission for a typical configuration Maximum: Statistical maximum to account for variation in p | |
Connectors and cabling | • 1000BASE-T ports: RJ-45 connectors, 4-pair Cat 5E UTP cabling • Multigigabit-T ports: RJ-45 connectors, 4-pair Cat 5E, Cat 6, Cat 6A UTP cabling • 1000BASE-T SFP-based ports: RJ-45 connectors, 4-pair Cat 5E UTP cabling • SFP transceivers: LC fiber connectors (single-mode or multimode fiber) • SFP+ transceivers: LC fiber connectors (single-mode or multimode fiber) • QSFP+ transceivers: MPO and LC fiber connectors (single-mode or multimode fiber) • QSFP+ connector • SFP+ connector • Cisco StackWise stacking ports: copper-based Cisco StackWise cabling • Cisco StackPower: Cisco proprietary power stacking cables • Ethernet management port: RJ-45 connectors, 4-pair Cat 5 UTP cabling • Management console port: RJ-45-to-DB9 cable for PC connections | |
Power connectors | • Customers can provide power to a switch by using the internal power at the back of the switch • Internal power supply connector: The internal power supply is an auto-ranging unit. It supports input voltages between 100 (115 for 1100WAC) and 240 VAC. Use the supplied AC power cord to connect the AC power connector to an AC power outlet | |
Safety certifications | • UL 60950-1 • CAN/CSA-C222.2 No. 60950-1 • EN 60950-1 • IEC 60950-1 • AS/NZS 60950.1 • IEEE 802.3 | |
Electromagnetic emissions certifications
| • 47 CFR Part 15 • CISPR22 Class A • EN 300 386 V1.6.1 • EN 55022 Class A • EN 55032 Class A • CISPR 32 Class A • EN61000-3-2 • EN61000-3-3 • ICES-003 Class A • TCVN 7189 Class A • V-3 Class A • CISPR24 • EN 300 386 • EN55024 • TCVN 7317 • V-2/2015.04 • V-3/2015.04 • CNS13438 • KN32 • KN35 • IEC 61000-6-1 • EN 61000-6-1 Additional Certifications for C9300L SKUs: • QCVN 118:2018/BTTTT • CISPR24/25 • CISPR 32 Class A • VCCI-CISPR 32 Class A • EN55035 | |
Environmental | Reduction of Hazardous Substances (ROHS) 5 | |
Frequently Asked Questions
What does the UPOE designation signify on the C9300-48UB-E? +
The UPOE (Universal Power Over Ethernet) designation indicates that this switch supports up to 60W of power per port. This is essential for powering high-draw enterprise endpoints like advanced pan-tilt-zoom cameras, smart building sensors, and high-performance wireless access points that require more than the standard PoE+ limits.
How does the deep buffer architecture benefit network performance? +
Deep buffers are critical for handling traffic bursts in environments with high-bandwidth applications or congested network paths. By accommodating temporary spikes in data flow, the C9300-48UB-E prevents packet drops and reduces retransmissions, ensuring consistent throughput for critical enterprise services and reducing latency in complex, multi-tiered network architectures.
Is the Network Essentials license sufficient for my deployment? +
Network Essentials provides fundamental Layer 2 and Layer 3 routing capabilities, including static routing, RIP, and OSPF, making it ideal for standard access-layer deployments. If your specific environment requires advanced features like BGP, VXLAN, or SD-Access integration, you may need to upgrade to the Network Advantage license later.
Can I stack the C9300-48UB-E with other Catalyst 9300 models? +
Yes, this switch supports Cisco StackWise technology, which allows you to combine up to eight units into a single logical entity. This architecture provides simplified management, resilient failover, and high-bandwidth stacking capabilities when integrated with other compatible Catalyst 9300 Series switches sharing the same license tier.
What is the port density and interface configuration for this model? +
The C9300-48UB-E features 48 fixed 10/100/1000 Mbps Ethernet ports, all of which are UPOE-enabled. The unit provides flexible uplink options through modular network modules, allowing you to choose between various SFP or SFP+ configurations to suit your existing fiber or copper distribution backbone requirements.
Does this switch support redundant power supplies? +
This model supports dual, field-replaceable modular power supplies. This redundant power configuration ensures high availability for the switch and its connected PoE devices. By utilizing multiple power inputs, you can maintain operations during a single power supply failure, effectively preventing downtime in mission-critical office or industrial deployments.
How do I manage the C9300-48UB-E within a large enterprise network? +
Management is streamlined through Cisco DNA Center, the WebUI interface, or the traditional Command Line Interface (CLI). These options offer comprehensive visibility and control, allowing your IT team to perform automated configuration deployments, monitoring, and troubleshooting across the entire stack, regardless of the physical size of your network infrastructure.
What are the primary use cases for the C9300-48UB-E switch? +
This switch is designed for high-density campus environments that require robust PoE power for IoT devices. It is particularly effective for modern workspaces utilizing smart building technologies, digital signage, and high-density Wi-Fi 6/6E access points that demand stable power and deep buffering to manage unpredictable traffic patterns effectively.
How can I obtain a bulk quote for multiple C9300-48UB-E units? +
If you are planning a large-scale infrastructure refresh or building out a new data center, contact our sales team directly through the BuyRouterSwitch.com quote request form. We specialize in providing competitive pricing for high-volume enterprise orders and can assist in bundling the specific accessories required for your project.
Why should I choose BuyRouterSwitch.com for my Cisco networking hardware? +
BuyRouterSwitch.com is a dedicated partner for IT procurement, providing access to authentic Cisco hardware and streamlined purchasing workflows. Our focus is on simplifying the acquisition process for enterprise buyers, ensuring you receive the exact technical specifications needed for your project with the security and reliability required for professional enterprise procurement.
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