The Cisco Catalyst C9500X-28C8D delivers enterprise core switching for demanding campus environments where very high bandwidth and growth headroom matter. With 100G and 400G connectivity plus StackWise Virtual, it supports cleaner aggregation and predictable performance for high-speed refresh projects.
As core traffic grows denser and change windows stay tight, infrastructure teams need aggregation that keeps high-volume workloads moving with room for future expansion.
Cisco Catalyst C9500X-28C8D is a fixed-core switch for demanding campus backbones and data-centre interconnects. It brings 28×QSFP28 100G and 8×QSFP-DD 400G connectivity into a compact core role.
With 12800 Gbps switching capacity, StackWise Virtual and IOS-XE, the platform supports cleaner uplink consolidation and clearer operational control. It suits environments where routing consistency and simplified core design matter.
That combination gives teams a practical path for high-speed refresh, while keeping storage, virtualisation and management traffic predictable. It also helps preserve headroom for 400G growth without moving immediately to a modular chassis.
Our team can help you assess Cisco Catalyst C9500X-28C8D against your core requirements and map it to your current and planned workloads.
Cisco Catalyst C9500X-28C8D is a high-capacity campus core and aggregation switch for enterprise networks that need dense 100G and 400G connectivity with a scalable switching platform.
Unified 100G and 400G Fabric
The switch combines 28 QSFP28 100G ports and 8 QSFP-DD 400G ports to support high-capacity aggregation and backbone designs.
Large Switching Capacity
Its 12800 Gbps switching capacity provides the throughput needed for demanding campus core and distribution traffic flows.
Aggregation Ready Design
The port mix supports consolidation of multiple high-speed uplinks into a single platform for streamlined network architecture.
High-Speed Uplink Scaling
The 400G interfaces provide headroom for future uplink growth while preserving compatibility with 100G connectivity where required.
StackWise Virtual Resilience
StackWise Virtual enables logical switch pairing to improve operational continuity and simplify the deployment of redundant core designs.
Consistent Control Plane
The platform supports a unified operating model across the virtual switch pair, helping maintain predictable network behavior during planned changes.
Core Network Standardization
A single switching architecture can be applied across core and aggregation layers to reduce operational complexity in enterprise environments.
If you are planning a high-speed campus core or aggregation refresh, our team can help align port mix, capacity, and virtualized resilience to your network design goals.
| Product Family | Cisco Catalyst |
|---|---|
| Product Series | 9500X |
| Deployment | Campus |
| Target Organisation Size | Enterprise |
| Primary Use Case | Core |
| Product Tier | Flagship |
| Network Architecture | Layer 3 |
| Access Ports | 28 |
| Access Port Architecture | QSFP28 |
| Uplink Ports | 8 |
| Uplink Architecture | QSFP-DD |
| Total Ports | 36 |
| Maximum Port Speed | 400G |
| Port Configuration | 28×QSFP28 + 8×QSFP-DD |
| PoE | No |
| Stacking | Supported |
| Operating System | |
| Power Redundancy | Hot-swappable PSUs |
| Maximum VLANs | 4094 |
| Routing Capability | Dynamic |
| Switching Capacity (Gbps) |
Cisco Catalyst C9500X-28C8D is a high-capacity core switch for campus and data-centre aggregation where 100G and 400G headroom is needed. It fits teams planning predictable uplinks, tighter fault isolation and a fixed-core refresh without moving straight to a modular chassis.
In enterprise server rooms and smaller data centres, this model supports dense virtualised and storage-heavy traffic that can quickly outgrow 100G-only cores. It gives infrastructure teams the bandwidth margin needed for smoother refresh cycles and cleaner interconnect planning.
Financial sites need a core that can carry regulated user traffic, voice, payments and surveillance without creating change risk. C9500X-28C8D helps teams keep segmentation and routing controlled while adding room for future 400G uplinks.
Software teams often push frequent environment changes, large build artefacts and shared lab traffic through the same core. This switch suits engineering campuses that need stable aggregation for CI/CD platforms, private cloud and virtualisation without constant capacity pressure.
At telecom operations sites, the core must handle management flows, monitoring tools, backhaul handoffs and multi-tenant traffic with minimal disruption. The C9500X-28C8D provides the headroom and predictable core path needed to keep services separated and responsive.
Media teams moving edit files, review content and live production traffic need high-throughput aggregation between storage and workrooms. This model fits facility cores where delays ripple across teams, making capacity planning and fault isolation especially important.
Our team can help design and deploy Cisco Catalyst C9500X-28C8D for campus cores, data-centre aggregation, regulated environments and high-throughput production networks with the right capacity and change plan.
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Below you’ll find alternative models, suitable software and services that pair with this solution – helping you to avoid compatibility issues, reduce support overhead and deploy with confidence.
Not all deployments fit standard configurations. If you’re weighing up options or want a second opinion on your setup, our team is here to help with honest, straightforward advice backed by decades of vendor knowledge.
