Cisco C9300-24UXB-A | Catalyst 9300 24-Port mGig Switch, UPOE 560W, Deep Buffer, Layer 3

Q: What is the deep buffer feature and why is it important?
A: The C9300-24UXB-A features a 64 MB packet buffer, which is larger than standard Catalyst 9300 models. This deep buffer architecture is designed to handle micro-burst traffic, lossless multimedia content delivery, and larger routing tables without packet drops. It is particularly beneficial for environments with rich media applications, high-density Wi-Fi deployments, and applications requiring Quality of Service guarantees.

Q: Which network modules are compatible with this switch?
A: The C9300-24UXB-A supports Catalyst 9300 series network modules including C9300-NM-8X (8x 10G SFP+), C9300-NM-2Q (2x 40G QSFP+), C9300-NM-4G (4x 1G SFP), C9300-NM-2Y (2x 25G SFP28), and C9300-NM-4M (4x Multigigabit). The default module is C9300-NM-8X. Legacy Catalyst 3850 network modules are also supported for backward compatibility.

Q: Can this switch be stacked with other Catalyst 9300 models?
A: The C9300-24UXB-A is a higher-scale model that must be stacked only with other higher-scale models (C9300-24UB, C9300-24UXB, C9300-48UB). It cannot be mixed in a stack with standard Catalyst 9300, 9300X, or 9300L models. StackWise-480 technology supports up to 8 switches in a stack with 480 Gbps stacking bandwidth.

Q: What is the maximum PoE power available with redundant power supplies?
A: With the default PWR-C1-1100WAC power supply, the switch provides 560W of PoE budget. Adding a second 1100W power supply increases the total PoE budget to 1440W, enabling full UPOE support across all 24 ports simultaneously. Power supply options include PWR-C1-350WAC, PWR-C1-715WAC, and PWR-C1-1100WAC.

Q: What does the Network Advantage license include?
A: The Network Advantage perpetual license provides full Layer 3 routing (OSPF, EIGRP, BGP), advanced security features (MACsec, TrustSec), enhanced QoS, Flexible NetFlow, and advanced switching capabilities. It includes 24x7x365 Cisco TAC support when combined with Cisco DNA subscription licenses and enables the full feature set for enterprise deployments.