C9500-24Y4C-A - Cisco Catalyst 9500 24-Port 25G Switch

Cisco Catalyst 9500 Series 24-port 1/10/25G SFP28 switch with 4x40/100G QSFP28 uplinks, Network Advantage license, for enterprise core/aggregation.

The Cisco C9500-24Y4C-A is a member of the Catalyst 9500 Series, Cisco's flagship fixed core and aggregation switching platform for enterprise networks. It provides 24 fixed 1/10/25 Gigabit Ethernet SFP28 ports plus 4 fixed 40/100 Gigabit Ethernet QSFP28 uplink ports, delivering up to 2.0 Tbps of switching capacity and up to 1 Bpps forwarding rate. Built on an x86 CPU architecture with 16 GB DDR4 memory, the switch supports advanced programmability, security, segmentation, and cloud-ready operations. It ships with the Network Advantage software license, enabling advanced features such as Software-Defined Access (SD-Access), StackWise Virtual, and enhanced routing and security capabilities. Designed for high-density enterprise campus core and aggregation layers, this switch is well suited for data center edge, campus core deployments, and service provider aggregation environments requiring high throughput and scalable 25G/100G connectivity.

• Manufacturer: Cisco Systems, Inc.
• Product Family: Cisco Catalyst 9500 Series Switches
• Product Series: Catalyst 9500 High Performance
• Model: C9500-24Y4C-A
• Product Type: Fixed core/aggregation Layer 3 managed switch
• Software License: Network Advantage
• Fixed Ports: 24 x 1/10/25G SFP28
• Uplink Ports: 4 x 40/100G QSFP28
• Switching Capacity: Up to 2.0 Tbps
• Forwarding Rate: Up to 1 Bpps
• CPU: 4-core x86, 2.4 GHz
• Memory (DRAM): 16 GB DDR4
• Flash Storage: 16 GB
• MAC Address Table: Up to 82,000 entries
• Stacking: StackWise Virtual (SWV) supported
• Power Supply Options: C9K-PWR-650WAC-R or C9K-PWR-930WDC-R
• Power Supply Redundancy: Dual 1+1 redundant power supplies (AC or DC), ships with one by default
• Form Factor: 1 RU, rack-mountable
• Security: MACsec 256-bit encryption, Cisco Trustworthy Solutions, segmentation
• Management: Cisco DNA Center, SD-Access support
• Acoustic Noise: No greater than 71.5 LWAd dB
• RFID: Optional RFID tag (C9500-RFID) or opt-out (C9500-RFID-NONE)
• Optics Support: SFP/SFP+/SFP28 and QSFP+/QSFP28 modules
• ASIC: Cisco UADP ASIC

• 24 fixed 1/10/25 Gigabit Ethernet SFP28 ports for high-density access aggregation
• 4 fixed 40/100 Gigabit Ethernet QSFP28 uplink ports for scalable core connectivity
• Up to 2.0 Tbps non-blocking switching capacity
• x86-based 4-core 2.4 GHz CPU with 16 GB DDR4 memory for programmability
• Network Advantage license enabling SD-Access and advanced automation
• StackWise Virtual support for simplified high-availability topologies
• MACsec 256-bit encryption for line-rate data confidentiality
• Dual redundant AC/DC power supply support for resiliency
• Large-scale MAC/route/ACL table support for enterprise-grade networks
• Optional RFID tag selection for asset tracking at time of order
• Cisco DNA Center compatibility for centralized automation and assurance
• Built for security, IoT, and cloud-ready enterprise campus deployments

Designed for high-performance enterprise core and aggregation layer deployments requiring scalable 25G/100G connectivity.

• Enterprise campus core switch aggregating 25 GbE access layer uplinks
• Data center or campus aggregation layer with 100 GbE core uplinks
• Leaf-spine fabric spine node in cloud or hyperscale environments
• Service provider metro PoP aggregation for 5G O-RAN and MPLS links
• Software-Defined Access (SD-Access) fabric border or control node
• High-availability core deployment using StackWise Virtual
• Segmentation and policy enforcement point for zero-trust network architectures

• High-density 25G/100G connectivity in 1RU form factor
• Scalable switching up to 2.0 Tbps for growing networks
• Advanced automation via Cisco DNA Center integration
• Built-in MACsec encryption strengthens network security
• Redundant power options improve deployment resiliency
• Network Advantage license unlocks SD-Access capabilities

• Form Factor: 1 RU rack-mountable
• Acoustic Noise Level: No greater than 71.5 LWAd dB
• Power Supply: 650W AC or 930W DC options, dual redundant capable
• CPU Architecture: x86, 4-core, 2.4 GHz

Per available documentation, this product is validated for use within the Cisco Catalyst 9500 Series ecosystem, including:

• Cisco C9K-PWR-650WAC-R power supply
• Cisco C9K-PWR-930WDC-R power supply
• Cisco DNA Center management platform
• Cisco SD-Access (Software-Defined Access) fabric
• StackWise Virtual (SWV) high-availability configuration
• Cisco C9500-RFID / C9500-RFID-NONE optional RFID tag selection
• SFP, SFP+, and SFP28 optical transceiver modules
• QSFP+ and QSFP28 optical transceiver modules

Note: Optional network modules and uplink accessories vary by configuration; the RFID tag selection (opt-in or opt-out) must be made at time of order and cannot be changed afterward.

• Cisco Catalyst C9500-24Y4C-A switch unit
• One power supply (shipped by default; redundant supply sold separately)
• Rack-mount hardware (per Cisco installation documentation)

Q: What is the Cisco C9500-24Y4C-A switch used for?

A: It is a Catalyst 9500 Series switch designed for enterprise core and aggregation layers, offering 24x25G SFP28 access ports and 4x100G QSFP28 uplinks with the Network Advantage license.

Q: What is the switching capacity of the C9500-24Y4C-A?

A: According to Cisco and distributor documentation, the switch delivers up to 2.0 Tbps switching capacity and up to 1 Bpps forwarding rate.

Q: Does the C9500-24Y4C-A support stacking?

A: Yes, this switch supports StackWise Virtual (SWV) for high-availability, simplified logical topologies.

Q: What software license is included with this model?

A: The C9500-24Y4C-A ships with the Cisco Network Advantage license, which enables advanced features including SD-Access support.

Q: What power supply options are available for this switch?

A: The switch supports C9K-PWR-650WAC-R AC or C9K-PWR-930WDC-R DC power supplies, with dual redundant 1+1 configurations available; it ships with one power supply by default.

Q: How much memory and flash storage does the C9500-24Y4C-A have?

A: The switch is equipped with 16 GB of DDR4 DRAM and 16 GB of flash storage, based on the x86 4-core 2.4 GHz CPU platform.

Q: Is the RFID tag included with this switch?

A: The RFID tag is an optional selection for this model; customers must choose to opt in (C9500-RFID) or opt out (C9500-RFID-NONE) at the time of ordering, as it cannot be added later.

Q: What security features does the C9500-24Y4C-A support?

A: The switch supports MACsec 256-bit encryption and other Cisco Trustworthy Solutions features to reduce attack surface and enhance malware detection.