Cisco Catalyst 9300 48-Port Data Managed Switch (C9300-48T-A)

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The Cisco Catalyst 9300-48T-A is widely regarded as the industry's benchmark enterprise access switch — a 48-port Gigabit Ethernet managed switch built on Cisco's custom Uadp 2.0 programmable ASIC and running Cisco IOS-XE. It is the third generation of Cisco's flagship access switching platform, designed for organisations deploying intent-based networking with Cisco DNA Center.

The standout feature of the Catalyst 9300 is its StackWise-480 stacking technology — enabling up to 8 switches to be interconnected with 480 Gbps of aggregate stack bandwidth. This creates a single logical switch plane that simplifies management dramatically, provides hitless failover, and enables load-sharing of uplinks across the stack. No competing platform offers comparable stack bandwidth at this price tier.

The modular uplink design sets the 9300 apart from fixed-uplink competitors: the C9300-48T-A ships with 4 × 10G SFP+ uplinks by default, but the uplink module can be field-replaced with 4 × 1G SFP (C9300-NM-4G), 2 × 40G QSFP+ (C9300-NM-2Q), or other options — allowing the uplink speed to be upgraded in place as the distribution layer evolves. This protects the access layer investment over a 7–10 year lifecycle.

For DNA Center deployments, the 9300 serves as a Software-Defined Access fabric edge node — with automated VxLAN overlay provisioning, SGT-based micro-segmentation policy applied per endpoint identity, and Encrypted Traffic Analytics (ETA) that identifies malware in encrypted traffic flows without decryption. Combined with MACsec hardware encryption on all ports (including downlinks), the 9300 delivers the most comprehensive wired access security available.