• Expansion Module (Optional)
• 8×10 GE SFP+/SFP – C4KX-NM-8SFP+
• Management Port
• 10/100/1000 Base-T
• USB Port
• Type A (storage and boot) up-to 4 GB
• Dual Power Supply
• Yes
• Field Replaceable Fans
• Yes (5 fans)
• Fan Redundancy
• No performance impact with single fan failure

• System Throughput
• Up to 800 Gbps
• IPv4 Routing in Hardware
• Up to 250 Mpps
• IPv6 Routing in Hardware
• Up to 125 Mpps
• L2 Bridging in Hardware
• Up to 250 Mpps
• Media Access Control (MAC) Entries
• 55K
• Flexible Netflow Entries
• 128K
• Switched Port Analyzer (SPAN), Remote Switched Port Analyzer (RSPAN)
• 8 line rate bidirectional sessions (ingress and egress)
• Total VLANs
• 4094
• Total Switched Virtual Interfaces (SVIs)
• 4094
• IGMP groups
• 32K
• Dynamic Host Configuration Protocol (DHCP) Snooping Entries
• 12K (DHCP snooping bindings)
• ARP Entries
• 47K
• Spanning Tree Protocol Instances
• 10K
• Jumbo Frame Support for Bridged and Routed Packets
• Up to 9216 bytes

• High Availability Solution
• Virtual Switching System (VSS)
• Number of stackable switches in VSS
• Up to 2
• VSS Throughput
• Up to 1.6 Tbps
• Virtual Switch Link
• 1GE or 10GE
• Max number of Virtual Switch Links
• 8
• In-Service Software Upgrade
• Across the switches
• Nonstop Forwarding with Stateful Switchover
• Across the switches

• Onboard Memory (SRAM DDR-II)
• 4 GB
• Port Buffers
• 32-MB Shared Memory
• CPU
• Dual Core 1.5 GHz
• NVRAM
• 2 GB
• Optional External Memory (SD Card)
• 2 GB

• Port Queues
• 8 Queues/Port
• CPU Queues
• 64
• QoS Entries
• 128K (64K ingress and 64K in egress) Shared with ACL
• Aggregate Rate-Limiting
• Ingress port or VLAN and egress VLAN or Layer 3 port
• Rate-Limiting Level Types
• Committed Information Rate (CIR), Peak Information Rate (PIR)
• Aggregate Traffic Rate-Limiting Policers (1K=1024)
• 16K
• Flow-Based Rate-Limiting Method; Number of Rates
• Supported using flow-records in the classification criteria and policing action
• Qos Policy Enforcement
• Per Port or Per Vlan or Per Port, Per VLAN Granularity
• Class of Service (CoS)
• Yes
• Differentiated Services Code Point (DSCP)
• Yes

• Port Security
• Yes
• IEEE 802.1x and 802.1x Extensions
• Yes
• VLAN, Router, and Port ACLs
• Yes
• Security ACL Entries (1K=1024)
• 128K (64K ingress and 64K in egress) Shared with QoS
• Unicast Reverse Path Forwarding (uRPF) Check in Hardware
• Yes
• CPU Rate Limiters (DoS Protection) Includes Control Plane Policing
• Yes
• Private VLANs
• Yes
• Micro Flow Policer
• Yes. Supported using flow records in the class-map
• CPU HW Rate Limiters by Packet Per Second (pps) and Bit Rate Policers (bps)
• Supported in hardware control-plane policing (CoPP)
• Control Plane Policing (CoPP) for Multicast
• Yes
• ACL Labels
• Yes
• Port ACL
• Yes
• Traffic Storm Control (formally known as Broadcast/Multicast Suppression)
• Yes
• Virtualization Features
• VRF-Lite Scalability
• 64
• Easy Virtual Network (EVN) Scalability
• 32

• Operating Temperature
• 0C to 40C (RH to 90%)
• Storage Temperature
• -40C to 70C (RH 93%)
• Operating Altitude
• 60m below sea level to 3000m above sea level
• Relative Humidity
• Nonoperating Humidity: 95% RH
• Acoustic Noise Measured per ISO 7779 and Declared per ISO 9296 Bystander Positions Operating to an Ambient Temperature of 25C
• Industrial Product: 65 dBA maximum
• RoHS
• Reduction of Hazardous Substances (ROHS) 5

• AC Power Max Rating
• 750W
• System Power Consumption
• 330W nominal/400W max
• Input-Voltage Range and Frequency
• AC 100 to 240 VAC 50-60 Hz/DC -72 VDC to -40 VDC
• DC Power Max Rating
• 750W
• AC to DC failover and vice versa
• Yes
• Total Output BTU (Note: 1000 BTU/hr = 293W)
• 1122 BTU/hr (330 W) nominal/1365 BTU/hr (400 W) max
• Input Current
• AC 11A  110VAC, 6 A  200VAC/DC 25A Max
• Output Ratings
• 12V  62A & 3.3V  3A
• Output Holdup Time
• AC = 16 ms; DC = 4 ms  maximum load
• Power-Supply Input Receptacles
• AC IEC 60320 C15/DC Custom detachable screw terminal (supplied)
• Power Cord Rating
• AC 15A/DC 25A

• WS-C4500X-24X-ES
• 209,330
• WS-C4500X-40X-ES
• 199,720
• WS-C4500X-F-16SFP+
• 209,330
• WS-C4500X-F-32SFP+
• 199,720
• C4KX-FAN-R L10 Life 
• 60,000 at 40C

• Regulatory Compliance
• CE marking
• EMI and EMC Compliance
• 47CFR Part 15 (CFR 47) Class A
• AS/NZS CISPR22 Class A
• CISPR22 Class A
• EN55022 Class A
• ICES003 Class A
• VCCI Class A
• EN61000-3-2
• EN61000-3-3
• KN22 Class A
• CNS13438 Class A
• EN55024
• CISPR24
• EN300386
• KN24
• Safety Certifications
• UL 60950-1 Second Edition
• CAN/CSA-C22.2 No. 60950-1 Second Edition
• EN 60950-1 Second Edition
• IEC 60950-1 Second Edition
• AS/NZS 60950-1
• Industry EMC, Safety, and Environmental Standards
• GR-63-Core Network Equipment Building Systems (NEBS) Level 3
• GR-1089-Core Level 3

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