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| Expansion Module (Optional) | 810 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 |
| Forwarding Entries | 1610 GE Port Base SKU: IPv4: 64K, IPv6: 32K |
| 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 |
| Multicast Routes | 1610 GE Port Base SKU: IPv4: 24K, IPv6: 12K |
| 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 |
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