C9300-24UXB-A Full Official English Specification Description

1. SKU Definition

• UX: Multi-Gigabit mGig copper + Cisco proprietary UPOE max 60W per RJ45
• B = Higher Scale / Deep Buffer: Enlarged on-chip packet buffer (32MB vs standard UX’s 16MB), expanded MAC & routing table capacity for heavy multicast, video surveillance & bursty Wi-Fi6 traffic
• -A: Preinstalled Perpetual Network Advantage full-feature license (complete L2+ full advanced L3 routing, SD-Access, TrustSec, ETA, MACsec enabled natively)

2. Product Overview

Port & PoE Hardware Specifications

• 24×Multi-Gigabit Smart Rate RJ45 downlinks auto-negotiate 100Mbps /1G/2.5G/5G/10GBASE-T; every port supports IEEE802.3af/at PoE+ plus Cisco UPOE with maximum 60W single-port power via LLDP/CDP power negotiation
• Factory preinstalled single PWR-C1-1100WAC modular AC PSU, default baseline PoE budget = 560W. Optional redundant second PSU (1100WAC) expands total PoE budget up to 1440W; Cisco StackPower enables cross-stack power resource pooling to supply full 60W UPOE for all ports simultaneously across stacked chassis
• One rear modular uplink expansion slot, compatible with official C9300 uplink modules: C9300-NM-4G (4×1G SFP), C9300-NM-4M (4×10G SFP+), C9300-NM-2Q (2×40G QSFP+), C9300-NM-8X (8×10G SFP+), flexible uplink bandwidth from 1Gbps up to 40Gbps

Core Switch Performance & Deep-Buffer Higher-Scale Parameters (UXB exclusive upgrade vs standard UX)

• Standalone switching fabric capacity: 640 Gbps; aggregated stacking capacity up to 1120 Gbps
• Wire-rate IPv4/IPv6 forwarding throughput: 476.19 Mpps; stacked aggregate forwarding up to 833.33 Mpps
• Stacking: Cisco StackWise-480 with 480Gbps per-stack bandwidth; maximum 8 identical C9300-series switches stacked into single logical chassis via dedicated stacking cables
• System hardware: 8GB DRAM +16GB onboard flash storage, three hot-swappable variable-speed redundant cooling fans; embedded Catalyst 9800 onboard wireless controller manages up to 200 Cisco enterprise wireless APs
• Higher Scale Table Scale (UXB key upgrade):
  • MAC address table: 64,000 entries (double standard UX’s 32000)
  • IPv4 routing entries: 64,000; IPv6 routing entries:32,000; Multicast routing table:16,000 entries
  • ACL/QoS table capacity:18,000 entries; Jumbo frame support up to 9198 Bytes
• Packet Buffer:32MB deep buffer (standard UX =16MB), designed for heavy multicast & burst traffic scenarios

3. Full Feature Set under Preloaded Network Advantage (-A) Perpetual License

1. Complete Layer2 switching suite: 802.1Q VLAN, STP/RSTP/MSTP, LACP port-channel, port security, DHCP Snooping, DAI, 802.1X/MAB wired authentication, broadcast storm suppression, full Energy Efficient Ethernet(EEE)Cisco
2. Full Layer3 dynamic routing: Static, RIP, OSPF, EIGRP, BGP, IS-IS, VRF-lite, full PIM-SM/SSM multicast routing suite
3. Advanced Security: TrustSec SGT policy segmentation, full chassis-wide AES-256 MACsec encryption, Encrypted Traffic Analytics(ETA), embedded security telemetry, zero-trust access controlCisco
4. SD-Access ready: Native VXLAN EVPN fabric support, up to 256 virtual network segments for campus fabric deployment
5. Advanced QoS: Hierarchical QoS, full per-port ingress/egress policing/shaping, complete Flexible NetFlow/IPFIX traffic analytics, advanced congestion management leveraging large deep buffer

Note: Separate Cisco DNA Advantage subscription license is required for DNA Center automation, assurance and advanced network analytics functions, independent of perpetual Network Advantage hardware license.

4. Physical & Environmental Specifications

• Dimension: 44.5mm(H) × 445mm(W) × 488mm(D) /1.73in ×17.5in ×19.2in, standard 19-inch 1U rack mount installation
• Net weight: approx 8.25kg (18.18lb)
• Operating ambient temperature: -5℃ ~ +45℃; storage temperature: -40℃ ~ +70℃; operating relative humidity:5%~90% non-condensing
• Global compliance certification: UL60950-1, CE, FCC Class A, RoHS & WEEE compliant; Cisco Limited Lifetime Hardware Warranty

5. Suffix Glossary Recap

• UX = Multi-Gigabit 100M~10G auto-sense RJ45 + per-port max 60W Cisco UPOE
• B = Higher Scale Deep Buffer (32MB buffer, expanded MAC/Routing table for heavy multicast/burst traffic)
• -A = Perpetual Network Advantage full-feature permanent license (full L3 routing, SD-Access, TrustSec, ETA, full MACsec supported)