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C9500X-28C8D-A
Cisco C9500X-28C8D-A Catalyst 9500X 28-Port 100 Gigabit Ethe...
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C9500X-28C8D-A is a fixed Layer 3 enterprise core and aggregation switch with 28 native 100G QSFP28 ports and eight 400G QSFP-DD ports. The Cisco Catalyst 9500X combines high-speed fiber interfaces with a fixed-port architecture rather than removable uplink cards. Its 1U chassis includes Network Advantage, the perpetual network tier for advanced routing and segmentation. Within the Catalyst 9000 family, this configuration serves core and distribution connections rather than powered copper endpoints. C9500X-28C8D-E retains the same physical port arrangement but includes Network Essentials instead. Native interface speed, physical connector type and network license tier distinguish the configuration; breakout connections require their own port-mapping and compatibility checks.
C9500X-28C8D-A price is $44,911.65, a 50% saving from the Cisco list price of $89,823.30. C9500X-28C8D-A is in stock and available for free next-day delivery. (terms applied)
Request bulk order quote for C9500X-28C8D-A for additional pricing. Browse the full Cisco 9500X Catalyst Switches series or explore all Cisco products.
12000 Gbps switching capacity and 8000 Mpps forwarding rate define separate bandwidth and packet-processing ceilings. OSPFv2, OSPFv3, EIGRP, IS-ISv4 and BGPv4 support dynamic routing, while PIM-SM and PIM-SSM handle multicast. C9500X-28C8D-A carries 32 GB DRAM and 32 GB flash for control-plane operation and software storage. Resource ceilings reach 256000 MAC entries and 2000000 IPv4 routes, with allocation dependent on templates and prefix combinations. Cisco Silicon One Q200 handles forwarding. StackWise Virtual requires Cisco IOS XE 17.10.1 or later. An asymmetric IRB centralized gateway is not supported.
C9500X-28C8D-A is available new sealed or certified refurbished; refurbished units are inspected and bench-tested for power-on, POST, rated-speed port links, clean boot and optics bay recognition, then firmware verified and wiped to factory default. ORM warranties provide up to a 3-year extended warranty for new units and up to 1 year for refurbished units, with 30-day returns on every condition; terms apply. Cisco's separate Enhanced Limited Lifetime warranty covers the original owner, limited to 5 years after discontinuance is announced. Specify condition, quantity and accessories on the PO; enterprise and volume orders have PO acceptance, Net-30 for government and RMA with advance replacement across UK, EU, US and MEA.
| Key Specs | Key Spec Values |
|---|---|
Operating System | Cisco IOS XE. |
License Tier | Network Advantage. |
Port Configuration | 28 x 100G QSFP28 / 8 x 400G QSFP-DD. |
Cooling | 6 x C9500X-FAN-1U-R fans. |
C9500X-28C8D-A occupies the campus core and terminates 40G or 100G routed links from distribution blocks on 28 QSFP28 ports. Eight QSFP-DD ports carry 100G, 200G, or 400G connections toward peer cores, shared services, or upstream routing. Engineers apply Network Advantage routing, VRF segmentation, QoS, multicast, telemetry, and MACsec policies through Cisco IOS XE, then align optics and MTU settings across every handoff. The 1RU platform consolidates high-speed distribution traffic into a compact routed core while preserving clear policy and failure boundaries.
C9500X-28C8D-A sits at the aggregation tier between access distribution systems and centralized network services. Its QSFP28 interfaces collect 40G and 100G trunks or routed links, while QSFP-DD interfaces provide higher-capacity paths toward the core or service edge. Engineers use EtherChannel, BGP, OSPF, IS-IS, VLANs, and VRFs to separate failure domains and control route exchange. Supported breakout modes adapt selected ports to lower-speed handoffs where the cabling plan requires them. The resulting topology concentrates mixed high-speed connections without introducing a modular chassis.
Two C9500X-28C8D-A switches form a StackWise Virtual core pair with designated high-speed links and a separate dual-active detection path. Both chassis forward traffic while the active control plane manages Layer 2 and Layer 3 protocols across the virtual system. Engineers dual-home downstream distribution switches through multichassis EtherChannel, split upstream paths across both members, and match IOS XE releases, licenses, optics, airflow, and power feeds. Stateful Switchover preserves control-plane continuity during a member failure, leaving the network with redundant forwarding and one operational management domain.
When hardware is being staged before installation, console access can begin before a management address is configured. The console session uses 9600 baud with 8 data bits, 1 stop bit and no parity. Specify the console connection and staging access requirements on the purchase order before equipment arrives.
When a multi-site rollout requires asset scanning, RFID selection must be settled at purchase because a tag cannot be installed later after opting out. Specify C9500X-RFID for tagged units or C9500-RFID-NONE when tags are omitted, and keep the required selection consistent across the purchase order.
When a spare must serve sites with different power feeds, supported combinations include two AC supplies, two DC supplies or an AC/DC pair. C9K-PWR-1500WDC supplies enable the DC configuration. Specify the intended supply combination and matching site connections before ordering equipment intended for deployment or shared spares.
RJ-45 PoE endpoint connections
C9500X-28C8D-A has fiber data-port cages rather than RJ-45 access ports and cannot supply PoE to endpoints. Copper PoE endpoint connections require different switching hardware.
Meraki dashboard switch management
Catalyst 9500X does not support Meraki cloud management. The embedded WebUI and Cisco IOS XE CLI are local management paths, not Meraki dashboard substitutes.
Native 50G SFP56 aggregation
C9500X-28C8D-A lacks native SFP56 downlinks. C9500X-60L4D-A provides 60 native 10/25/50G SFP56 ports and four 400G ports, changing downlink density and the higher-speed port count.
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| C9500X-28C8D-A |  C9500X-28C8D-E |  C9500X-60L4D-E |  C9500X-60L4D-A | |
|---|---|---|---|---|
| Depth | 553.7 mm | 553.7 mm | 553.7 mm | 553.7 mm |
| Ethernet Technology | 100 Gigabit Ethernet | 100 Gigabit Ethernet | 400 Gigabit Ethernet | 50 Gigabit Ethernet |
| Form Factor | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U |
| Height | 43.9 mm | 43.9 mm | 43.9 mm | 43.9 mm |
| Manufacturer Part Number | C9500X-28C8D-A | C9500X-28C8D-E | C9500X-60L4D-E | C9500X-60L4D-A |
| Memory | 32 GB | 32 GB | 32 GB DRAM / 32 GB Flash | 32 GB |
| Switching Capacity | 12000 Gbps | 12000 Gbps | 9.2 Tbps | 9200 Gbps |
| Weight | 13.28 kg. | 13.28 kg | 12.75 kg | 12.75 kg. |
| Width | 444.5 mm | 444.5 mm | 444.5 mm | 444.5 mm |
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C9500X-28C8D-A identifies a Catalyst 9500X switch with Network Advantage. C9500X names the hardware family, 28C corresponds to 28 100G ports, 8D corresponds to eight 400G ports, and A selects Network Advantage. The suffix describes the included perpetual network tier, not a subscription term.
Catalyst 9500X is managed through the Cisco IOS XE CLI, WebUI and Cisco Catalyst Center. CLI access uses SSH, Telnet, RJ-45 console or USB-C console connections. SNMP, NETCONF, RESTCONF and gNMI support external management and automation. Meraki cloud management is not supported on Catalyst 9500X.
C9500X-28C8D-A includes perpetual Network Advantage and requires an Advantage-matched subscription for new hardware orders. Cisco DNA Essentials/Advantage and Cisco Catalyst Essentials/Advantage offer 3-, 5- and 7-year terms. Cisco Networking Subscription offers Cisco Switching Essentials and Cisco Switching Advantage with a 36-month minimum. Specify Smart Account entitlement handling.
C9500X-28C8D-A supports unified switching licensing with Cisco IOS XE 26.2.1, 17.18.5 or 26.1.3. Those releases enable the Cisco Networking Subscription licensing path. An eligible image is required when purchasing against Cisco Switching Advantage entitlements; an existing Cisco IOS XE installation does not automatically establish unified licensing support.
C9500X-28C8D-A includes Network Advantage, while C9500X-28C8D-E includes Network Essentials. Network Advantage adds advanced routing, segmentation, multicast, scale and security capabilities beyond the foundational tier. The A variant suits purchases requiring those network features; the E variant suits configurations limited to foundational switching and routing capabilities.
C9500X-28C8D-A provides 28 native 100G QSFP28 downlinks, while C9500X-60L4D-A provides 60 native 10/25/50G SFP56 downlinks. The former serves aggregation requiring native 100G connections; the latter suits denser lower-speed fiber aggregation. Physical interface type and required native link speeds distinguish the intended purchases for these configurations.
Yes, C9500X-28C8D-A supports breakout on odd-numbered QSFP28 ports and every QSFP-DD port. Even-numbered QSFP28 ports do not support breakout. Breakout therefore depends on the selected physical port rather than the presence of a QSFP cage alone; the intended interface mapping and cable compatibility must match the connection plan.
C9500X-28C8D-A ships with C9K-PWR-1500WAC and supports a second internal supply for redundancy. C9K-PWR-1500WDC supplies enable DC configurations, and AC/DC mixing is supported. With two supplies, redundant mode lets the remaining supply power the complete system if its partner fails; each supply connects to its own power source.
No, Catalyst 9500X uses six variable-speed C9500X-FAN-1U-R fans by default. C9500X-FAN-1U-F provides the alternative airflow direction, but mixed airflow types are not supported. A complete airflow change requires all six fan units to use the same model, followed by a manual power cycle of the switch.
Yes, Catalyst 9500X uses a full-width 1U rack chassis rather than a desktop enclosure. C9500X-28C8D-A measures 444.5 mm wide and 553.7 mm deep, including fan and tray handles. Its maximum listed chassis weight is 13.28 kg with two supplies and installed cooling, which matters when specifying rack support.
C9500X-28C8D-A supports PWR-CAB-AC-USA520 for a NEMA 5-20 connection or PWR-CAB-AC-USA for a NEMA L6-20P connection. Both use the C21 appliance connector required by this switch family. The correct cord depends on the site receptacle and supply voltage, not simply on the order being delivered in the United States.
C9500X-28C8D-A has no announced hardware end-of-sale date. Cisco has not announced an end-of-sale date for Catalyst 9500X. Hardware lifecycle milestones are separate from Cisco IOS XE release retirement, so software maintenance and support requirements should be specified independently when preparing a purchase order for the switch.
C9500X-28C8D-A is offered new sealed or certified refurbished by ORM Systems. New units receive up to a 3-year extended warranty; refurbished units receive up to 1 year. Returns cover 30 days on every condition; terms apply. Cisco's separate Enhanced Limited Lifetime warranty covers the original owner, limited to 5 years after discontinuance is announced.
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