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by Cisco
Product Line: Cisco Catalyst 6500 Series Switches
Product Type: Switching Module
Original price $0.00 - Original price $190.00
Original price
$0.00 - $190.00
Current price $190.00
Title: Used

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Product Description

The WS-X6716-10G-3C is equipped with 16 GbE ports, supporting X2 optics and a 40 Gbps switch fabric connection, designed for efficient network performance with a 4:1 oversubscription rate. It features a DFC3C forwarding engine, enhancing capabilities with up to 256,000 forwarding entries, and utilizes advanced queuing mechanisms with CoS and DSCP based queue mapping for optimized data traffic management. This module supports jumbo frames up to 9216 bytes, offers a high port density with up to 130 ports per chassis or 260 ports in a Virtual Switching System (VSS), and is compatible with Cisco Catalyst 6500 Series E-Series chassis, ensuring expansive network scalability and reliability.

Key Feature for the WSX671610G3C

  • What is the number of Gigabit Ethernet ports available on this switch?
    The switch has 16 Gigabit Ethernet (GbE) ports.
  • How is the switch fabric connection designed?
    The switch fabric connection is designed to support 40 Gbps.
  • Can you explain the oversubscription ratio for this device?
    The device features a 4:1 oversubscription ratio.
  • What technology enhances the forwarding capabilities of this switch?
    The forwarding engine is equipped with DFC3C for distributed forwarding.
  • How many forwarding entries does the switch support?
    The switch supports 256,000 forwarding entries.
  • What types of queue mapping does the device use?
    The device uses Class of Service (CoS) based and Differentiated Services Code Point (DSCP) based queue mapping.
  • Describe the scheduling mechanisms available on this switch.
    The switch utilizes DWRR, WRED (Oversubscription Mode), and DWRR, WRED, SRR at Egress (Performance Mode).
  • What is the port buffer size in both oversubscription and performance modes?
    In Oversubscription Mode, the port buffers are 90 MB per Port Group, and in Performance Mode, they are 200 MB per Port.
  • Does this switch support jumbo frames?
    Yes, the switch supports jumbo frames up to 9216 Bytes.
  • What are the power requirements for this switch?
    The power requirements for the switch are 457.8 W.

Product Review

The Cisco WS-X6716-10G-3C module offers 16 Gigabit Ethernet ports with X2 optics, supporting a high bandwidth capacity with a 40 Gbps switch fabric connection, suitable for environments requiring high-speed data transfer. However, its 4:1 oversubscription rate may limit performance under peak loads, which could be a drawback for networks with high traffic volumes. Additionally, it features a comprehensive queuing mechanism and supports up to 256,000 forwarding entries, providing efficient data handling and scalability for growing network demands.


The Cisco WS-X6716-10G-3C is a high-performance, 16-port 10 Gigabit Ethernet module designed for the Cisco Catalyst 6500 E-Series chassis and the Virtual Switching System (VSS). It is engineered to meet the demands of high-density, bandwidth-intensive network environments. This module features X2 optics and a switch fabric connection of 40 Gbps, ensuring efficient data flow and connectivity. The module's oversubscription rate is set at 4:1, balancing high-speed data transfer with cost-effectiveness. Equipped with the DFC3C Distributed Forwarding Engine, the Cisco WS-X6716-10G-3C enhances the processing of packets, allowing for a smoother and more reliable network experience. It supports up to 256,000 forwarding entries, enabling extensive network scalability and flexibility. The module's advanced queuing mechanism includes Class of Service (CoS) and Differentiated Services Code Point (DSCP) based queue mapping, which, along with its scheduling features—DWRR, WRED in oversubscription mode, and DWRR, WRED, SRR at egress in performance mode—ensures efficient traffic management and prioritization. Port buffers are another critical feature, with 90 MB available per port group in oversubscription mode and 200 MB per port in performance mode, facilitating smooth data transmission even under heavy loads. Jumbo frame support of up to 9216 bytes is also provided, allowing for the efficient handling of large data packets and reducing overhead.
  • Maximum port density per chassis reaches up to 130 ports in a 9-slot chassis and 260 ports per VSS, offering extensive scalability.
  • Compatible with Cisco Catalyst 6500 Series Virtual Switching Supervisor Engine 720 with 10GE uplinks or Supervisor Engine 720 with any PFC, this module ensures seamless integration and enhanced performance.
  • The module supports any Cisco Catalyst 6500 E-Series Chassis, offering flexibility in deployment and upgrades.
With 1 GB of onboard memory and dimensions of 1.2 x 14.4 x 16 inches, the module weighs 13 lbs and operates efficiently within a temperature range of 0 °C to 55 °C. Its storage temperature range is -40 °C to 75 °C, with a relative humidity tolerance of 10% to 90% (non-condensing), and it can operate at altitudes from –500 to 10000 ft. The module requires 457.8 W of power and features indicators for status and link monitoring, simplifying maintenance and troubleshooting. In conclusion, the Cisco WS-X6716-10G-3C module is a powerful solution for enterprises and service providers looking to expand their network's capacity and performance. Its comprehensive set of features ensures that it can meet the needs of demanding network environments, making it a valuable addition to any Cisco Catalyst 6500 E-Series chassis deployment.


Part Number and ManufacturerCisco WS-X6716-10G-3C
Port Quantity16 Gigabit Ethernet Ports
Optical InterfaceX2
Connection to Switch Fabric40 Gigabits per second
Rate of Oversubscription4-to-1
Distributed Forwarding CapabilityIncorporates DFC3C for Enhanced Forwarding
Forwarding Entries CapacitySupports up to 256,000 Entries
Queue ManagementQueue Mapping based on Class of Service and Differentiated Services Code Point
Packet SchedulingDWRR, WRED in Oversubscription; DWRR, WRED, SRR for Egress in Performance
Memory Allocation for Port Buffers90 MB per Group in Oversubscription, 200 MB per Port in Performance
Support for Large FramesSupports Frames up to 9216 Bytes
Peak Port Capacity per Enclosure130 Ports in a 9-Slot Enclosure
Max Ports within a VSS Configuration260 Ports
Compatible Supervisor EnginesCisco Catalyst 6500 Series with Virtual Switching Supervisors 720 with 10GE or any PFC
Compatible Chassis TypesAll Cisco Catalyst 6500 E-Series Enclosures
Memory Onboard1 Gigabyte
Physical Dimensions (Height x Width x Depth)1.2 x 14.4 x 16 inches
Unit Weight13 pounds
Operational Temperature Range32°F to 131°F
Temperature Range for Storage-40°F to 167°F
Humidity Tolerance (Non-Condensing)10% to 90%
Altitude Range for Operation-500 to 10,000 feet
Power Consumption457.8 Watts
Diagnostic IndicatorsStatus and Link Activity

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