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C9500-24Y4C-A – 24port 25G – 4port 100G uplink – core and aggregation switch
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C9500-24Y4C-A Description
Cisco C9500-24Y4C-A is a high-performance 25G/100G aggregation and core switch in the Cisco Catalyst 9500 Series.Featuring 24 × SFP28 downlinks and 4 × QSFP28 uplinks, the C9500-24Y4C-A delivers up to 2 Tbps of switching capacity and 1 Bpps forwarding rate with full line-rate performance. Built on Cisco UADP 3.0 programmable ASIC, it supports advanced Layer 3 features, hardware-based telemetry, and real-time analytics.The Network Advantage license unlocks advanced routing capabilities, including MPLS L3VPN, VRF-Lite, EVPN, and Segment Routing. It also enables full StackWise Virtual support with SSO and ISSU for seamless network availability. Running Cisco IOS XE, the switch integrates with Cisco Catalyst Center and Meraki Cloud Monitoring for automation, analytics, and secure enterprise fabric management.
Product Performance
Uplink Ports
Switching capacity
Forwarding rate
Key Features
Next-Generation 25G/100G Core Switching
Provides 24 × 25G SFP28 and 4 × 100G QSFP28 interfaces for non-blocking performance across enterprise cores and high-density aggregation networks.
Advanced Routing and Segmentation
Supports MPLS L3VPN, VRF-Lite, EVPN, and Segment Routing for scalable multi-tenant or hybrid-cloud deployments.
StackWise Virtual High Availability
Enables active-active redundancy and seamless stateful failover with SSO/ISSU for continuous operation.
Enhanced Security and Compliance
Incorporates Secure Boot, Trust Anchor Module, and 256-bit MACsec encryption for full data-plane protection.
Programmable UADP 3.0 ASIC
Offers hardware-based telemetry, QoS, and ACL handling with flexibility for automation and SDN integration.
Energy-Efficient Design
Compact 1RU chassis with dual PSUs and FRU fan trays ensures serviceability and reduced downtime in enterprise cores.
Applications Scenarios
Large Enterprise Campus Core
Aggregates multiple 25G access layers into 100G redundant backbones.
Data Center Edge / Fabric Border
Serves as a high-performance leaf or border switch in 25G/100G VXLAN or EVPN deployments.
Service Provider and Financial Networks
Provides carrier-grade routing and encryption for multi-tenant, latency-sensitive applications.
Product Comparison
|
Parameter |
C9500-24Y4C-A |
C9500-48Y4C-A | |
|---|---|---|---|
|
Downlink Ports |
24 × 1/10/25G SFP28 |
24 × 1/10/25G SFP28 |
48 × 1/10/25G SFP28 |
|
Uplink Ports |
4 × 40/100G QSFP28 |
4 × 40/100G QSFP28 |
4 × 40/100G QSFP28 |
|
ASIC |
UADP 3.0 |
UADP 3.0 |
UADP 3.0 |
|
Switching Capacity |
2 Tbps |
2 Tbps |
3.2 Tbps |
|
Forwarding Rate |
1 Bpps |
1 Bpps |
1 Bpps |
|
License Tier |
Network Advantage |
Network Essentials |
Network Advantage |
|
Advanced Routing |
MPLS, EVPN, VRF-Lite, SR |
Basic IPv4/IPv6 |
MPLS, EVPN, SR |
|
StackWise Virtual |
Supported |
Supported |
Supported |
|
Security |
MACsec-256, Trust Anchor |
MACsec-256, Trust Anchor |
MACsec-256 |
|
Power Supply |
Dual 650W AC |
Dual 650W AC |
Dual 650W AC |
|
Dimensions |
1.73 × 17.5 × 18.0 in |
1.73 × 17.5 × 18.0 in |
1.73 × 17.5 × 18.0 in |
|
Weight |
9.52 kg |
9.52 kg |
9.96 kg |
C9500-24Y4C-A Switch Front Panel
|
1 |
24 1G/10G/25G SFP28 ports |
5 |
USB mini Type B console port |
|
2 |
Uplink ports |
6 |
RFID (Optional) |
|
3 |
Ethernet management port |
7 |
Console port (RJ-45 Serial) |
|
4 |
Reset button |
8 |
USB 3.0 host port |
C9500-24Y4C-A Switch Rear Panel
The switch rear panel includes StackWise connectors, StackPower or XPS connectors, ports, fan modules, and power supply modules.
Components Delivered in the Shipping Box
The shipping box contains the model of the switch you ordered and other components needed for installation. Some components are optional, depending on your order.
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Model / License | C9500-24Y4C-A (Network Advantage) | Family | Catalyst 9500 High-Performance Series |
| Downlink Ports | 24 × 1G/10G/25G SFP28 | Uplink Ports | 4 × 40G/100G QSFP28 (fixed) |
| ASIC | Cisco UADP 3.0 programmable ASIC | Architecture | Line-rate non-blocking switching |
| Switching Capacity | 2 Tbps | Forwarding Rate | 1 Bpps (64-byte frames) |
| MAC Address Table | 64,000 entries | IPv4 / IPv6 Routes | 256,000 each (direct + indirect) |
| VLAN IDs | 4094 | Jumbo Frames | 9216 bytes |
| Routing Features | Full L3 stack: MPLS, EVPN, VRF-Lite, Segment Routing | Dynamic Protocols | BGP, OSPF, IS-IS, EIGRP |
| High Availability | StackWise Virtual, SSO, ISSU | Virtual Chassis | Two switches act as one logical unit |
| Security | Trust Anchor, Secure Boot, MACsec-256 | Compliance | UL/CSA, CE, FCC Class A |
| Automation | NETCONF, RESTCONF, gNMI, Model-driven Telemetry | Management | Catalyst Center / Meraki Cloud Monitoring |
| Operating System | Cisco IOS XE 16.8.1a or later | Licensing | Smart License (DNA / Network Advantage) |
| Power Supply | Dual 650W AC (C9K-PWR-650WAC-R) | Airflow | Front-to-Back (C9K-T1-FANTRAY × 4) |
| Fan Modules | Hot-swappable dual-stacked fans | MTBF | 336,780 hours (nominal) |
| Dimensions (H×W×D) | 1.73 × 17.5 × 18.0 in | Weight | 9.52 kg (with PSUs & fans) |
| Environment | 0°C–40°C, 10–95% RH (non-condensing) | Warranty | Enhanced Limited Lifetime (E-LLW) |
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