Every WhaleyComm unit is professionally tested, reset to factory defaults, and certified by our in-house engineers — the same standard trusted by 5,000+ organisations across 25 years. Not a refurb marketplace. A certified lifecycle partner.
Tested to factory specification. Backed by 25 years of enterprise trust.
The Cisco Catalyst C9500-24Y4C-A is a purpose-built enterprise core and aggregation switch from Cisco's flagship Catalyst 9500 Series. This refurbished unit delivers enterprise-grade performance at a significantly reduced cost, making it an ideal choice for organizations looking to scale their network infrastructure without compromising on capability.
Equipped with 24 x 25G SFP28 ports and 4 x 100G QSFP28 uplink ports, the C9500-24Y4C-A provides the density and speed needed for high-bandwidth applications, server aggregation, and spine-leaf data center architectures. The "-A" suffix designates the Cisco Catalyst 9500 Advantage license tier, which unlocks advanced feature sets including enhanced security, full programmability, and network analytics capabilities through Cisco DNA Center.
Built on Cisco IOS XE software, this switch supports model-driven programmability via NETCONF, RESTCONF, and gRPC — enabling seamless integration into modern intent-based networking environments. Hardware-based security features include MACsec 256-bit encryption, Cisco TrustSec, and advanced threat detection.
As a refurbished unit from WhaleyComm, every C9500-24Y4C-A undergoes thorough inspection and testing to ensure full operational readiness, delivering enterprise reliability at a fraction of new-unit pricing. This switch is ideal for data center deployments, campus core layers, and high-density server connectivity environments.
Technical Specifications
Part Number
C9500-24Y4C-A
Series
Cisco Catalyst 9500
100G QSFP28 Uplink Ports
4
Operating System
Cisco IOS XE
License Tier
Advantage (DNA Advantage)
MACsec Encryption
256-bit AES
Ideal Use Cases
Data Center Core / Spine Layer
The C9500-24Y4C-A is well-suited for spine-leaf data center architectures requiring high-density 25G server-facing ports and 100G uplinks to aggregation or spine switches. Its low-latency forwarding and deep buffer support handle east-west traffic patterns common in modern virtualized environments.
Enterprise Campus Core Aggregation
Deploy the C9500-24Y4C-A as the core aggregation layer in a large enterprise campus network, consolidating traffic from distribution switches across multiple buildings or floors. The Advantage license tier enables Cisco DNA Center integration for centralized policy management, automation, and assurance.
High-Density Server Connectivity
Organizations running high-performance compute clusters or dense server farms benefit from the switch's 24 x 25G ports, providing a cost-effective path to connect next-generation servers with 25G NICs. The 100G uplinks ensure sufficient bandwidth to upstream network layers without creating bottlenecks.
What's Included
✔ Cisco Catalyst C9500-24Y4C-A Refurbished Switch (1x)
✔ Power Supply Unit(s)
✔ Rack-mount hardware / ears
✔ IOS XE pre-installed
✔ WhaleyComm inspection and testing certification
Lifetime Warranty - No Time Limits. No Questions.
Every WhaleyComm unit ships with a Lifetime Warranty. If it fails under normal operating conditions at any point, we replace it. 25 years, 5,000+ customers.
🔌
Compatibility Details
Review supported optics, cables, software, management protocols, and environment-specific compatibility guidance.
The Cisco Catalyst C9500-24Y4C-A is compatible with the following platforms, software, and ecosystems
✓
Cisco DNA Center – Full support for intent-based networking, automation, and network assurance workflows
✓
Cisco IOS XE – Latest supported release train for Catalyst 9500 Series
✓
Cisco TrustSec – Software-defined segmentation and policy enforcement
✓
Cisco SD-Access – Supported as a core/border node within SD-Access fabric deployments
✓
25G SFP28 Transceivers – Compatible with Cisco-certified SFP28 optics (SR, LR, and DAC/AOC cables)
✓
100G QSFP28 Transceivers – Compatible with Cisco-certified QSFP28 optics (SR4, LR4, and DAC/AOC cables)
✓
Cisco Smart Licensing / Smart Licensing Using Policy (SLP) – License management via Cisco Smart Account
✓
NETCONF / RESTCONF / gRPC – Programmable interfaces for integration with third-party orchestration and DevOps toolchains
