Why modular design keeps Cisco’s Catalyst 9300 Series switch in the bestseller lane

Cisco’s Catalyst 9300 Series campus switch remains one of the most widely deployed enterprise access switches, combining modular uplinks, advanced security features and a cloud-ready design that Cisco keeps extending with new DNA Center and AI-driven network capabilities.

Edited by ad hoc news Flagship & Bestseller Desk. Reviewed before publication on 06/15/2026 at 4:25 PM ET. Details in the imprint.

Cisco’s Catalyst 9300 Series access switch sits at the heart of many enterprise campus networks, and Cisco continues to position it as its lead stackable switching platform for secure, cloud-managed networks. The 9300 line supports modular uplinks up to 100G, high PoE budgets for dense Wi-Fi 6/6E deployments, and runs Cisco’s IOS XE software to integrate deeply with Cisco DNA Center for policy and automation. According to Cisco, the Catalyst 9300 is its “leading fixed enterprise switching access platform,” a status the company underpins with ongoing software feature updates and license options for network automation and analytics. Cisco’s official product page describes the Catalyst 9300 as the next generation of the industry’s most widely deployed stackable switching platform.

Catalyst 9300 Series: what the flagship access switch delivers

The Catalyst 9300 family targets campus access and branch deployments where enterprises need high-density Ethernet ports, strong segmentation, and integrated security for thousands of connected endpoints. Models range from 24 to 48 copper or fiber ports with options for full power over Ethernet, while modular uplink slots accept 1G, 10G, 25G or 100G modules so network teams can scale bandwidth without replacing the entire chassis. Buyers can choose between network-only licenses and Cisco’s DNA subscriptions, which unlock capabilities such as Software-Defined Access (SD-Access), identity-based micro-segmentation, and AI-assisted troubleshooting through Cisco DNA Center’s assurance analytics. The platform also includes support for hot-swappable redundant power supplies and fans, giving larger sites the ability to build in hardware resilience at the wiring closet level.

Security is a core part of the 9300 strategy, with the switches acting as enforcement points for Cisco’s identity-based access policies. Integrated features include support for 802.1X authentication, TrustSec for role-based segmentation, Encrypted Traffic Analytics to spot threats in encrypted flows, and MACsec link-layer encryption for sensitive links. The series supports secure boot and signed images, helping prevent tampering with the underlying IOS XE operating system. For organizations standardizing on Cisco’s broader security stack, the 9300 can tag and share telemetry with tools such as Cisco Identity Services Engine (ISE) and secure access solutions, enabling consistent policy from wired access through to the data center and cloud.

Operationally, the Catalyst 9300 is built for automation and programmability: it exposes model-driven telemetry, open APIs such as NETCONF and RESTCONF, and supports streaming analytics so operators can integrate it into modern observability pipelines. When paired with Cisco DNA Center, enterprises can use intent-based templates to push configurations across large switch fleets, then verify compliance with automated checks rather than manual audits. Cisco also emphasizes sustainability and lifecycle tooling; power management features help reduce energy usage during off-hours, while the modular uplink design extends the useful life of the switch when access-layer bandwidth requirements grow.

More recently, Cisco has been highlighting how its switching platforms, including the Catalyst 9300, are being prepared for AI-era traffic patterns and increased east-west bandwidth in campus environments. In a June 2026 research update, Cisco and analyst firm Foundry argued that AI adoption will lean heavily on robust, observable networks with secure segmentation and quality-of-service controls that many enterprises already deploy on Catalyst-class switches. Cisco’s newsroom article on agentic AI notes that trust in infrastructure and security “all lead back to the network”, reinforcing the company’s message that modern access switches need to be ready for AI-driven workloads as well as traditional office traffic.

Like any widely deployed infrastructure product, the Catalyst 9300 line also depends on continuous software maintenance to address vulnerabilities and keep security features current. Cisco regularly publishes advisories for IOS XE-based platforms and releases patched firmware images that network teams are expected to test and roll out across Catalyst fleets. Security agencies such as the U.S. Cybersecurity and Infrastructure Security Agency (CISA) increasingly flag exploited bugs in network management and SD-WAN tools, underlining the operational responsibility that comes with running critical Cisco infrastructure. An example is CISA’s recent addition of a Cisco Catalyst SD-WAN Manager flaw to its Known Exploited Vulnerabilities catalog, highlighting why keeping controller and access-layer systems updated is a priority for enterprise defenders. Security analysis around the CISA KEV entry stresses patching Cisco SD-WAN and campus gear promptly, a reminder that even flagship switches demand disciplined lifecycle management.

Within Cisco’s broader portfolio, the Catalyst 9300 Series anchors the enterprise access layer alongside higher-capacity campus core and data center lines, and its large installed base means feature updates and security advisories have material importance for existing customers. Cisco Systems Inc. is listed on NASDAQ under the symbol CSCO, and shares of Cisco Systems Inc. (US17275R1023) last traded on NASDAQ in USD, reflecting investor attention to both its hardware and recurring software and services revenue streams.

Cisco Catalyst 9300 Series in brief: key facts

• Product: Cisco Catalyst 9300 Series switches
• Manufacturer: Cisco Systems Inc.
• Category: Flagship/Bestseller enterprise access switch
• Launch date: First introduced in 2017, with ongoing updates
• MSRP / Price: Varies by configuration and license; typically in the mid four-figure USD range per switch
• Availability: Enterprise networking partners and resellers worldwide, including the US
• Target audience: Medium to large enterprises, campuses, and branches needing secure, scalable wired access
• Key differentiator / USP: Modular uplinks, high PoE density, and deep integration with Cisco DNA Center and security stack

This article was a.i.-assisted and editorially reviewed. Product information without warranty; prices and availability may change at short notice. Not investment advice and not a buy or sell recommendation. Trading involves risk up to and including the total loss of invested capital.