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by Cisco
Product Line: Cisco 6500 Series
Product Type: Gigabit Ethernet Module
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Title: Surplus

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Product Description

The WS-X6704-10GE-3C is a 4-port 10GbE fiber module equipped with XENPAK optics and supports a switch fabric connection of 40 Gbps (80 Gbps full duplex), ensuring a 1:1 oversubscription rate. Each port features a 16 MB buffer and supports jumbo frames up to 9216 bytes, optimizing performance for high-demand applications. It offers a maximum port density of 34 ports per chassis and up to 68 ports per VSS, with onboard memory of 256 MB, upgradeable to 512 MB or 1 GB.

FAQs for the WS-X6704-10GE-3C

  • What is the port density per chassis for the 4-Port 10GbE Fiber Module?
    The maximum port density per chassis is 34 ports for a 9-slot chassis.
  • How does the 4-Port 10GbE Fiber Module connect to the switch fabric?
    It connects with a 40 Gbps (80 Gbps full duplex) switch fabric connection.
  • What type of optics does the module support?
    The module supports XENPAK optics.
  • What is the oversubscription rate of the 4-Port 10GbE Fiber Module?
    The oversubscription rate is 1:1.
  • How many queues are available for receive and transmit on the module?
    Receive: 8q8t, Transmit: 1p7q8t.
  • What is the maximum jumbo frame size supported by the module?
    The module supports jumbo frames up to 9216 bytes for bridged and routed packets.
  • How much onboard memory does the 4-Port 10GbE Fiber Module come with?
    It comes with 256 MB of default onboard memory, upgradable to 512 MB or 1 GB.
  • What is the port buffer size per port on the module?
    The port buffer size is 16 MB per port.
  • What is the maximum port density per Virtual Switching System (VSS) configuration?
    The maximum port density per VSS is 68 ports.
  • How many ports does the 4-Port 10GbE Fiber Module have?
    The module has 4 ports.

Product Review

The CISCO WS-X6704-10GE-3C module offers a high-density solution with four 10GbE ports, facilitating substantial throughput with a 40 Gbps switch fabric connection that supports full duplex operation for enhanced data flow. However, it utilizes XENPAK optics, which may limit flexibility compared to more modern interfaces. Additionally, while it provides a 1:1 oversubscription rate and extensive queue and buffer options for efficient traffic management, the initial onboard memory of 256 MB might require an upgrade for optimal performance in demanding network environments.


The CISCO WS-X6704-10GE-3C is a 4-Port 10GbE Fiber Module designed for high-speed network environments. It supports four 10 Gigabit Ethernet ports, ensuring high-bandwidth connectivity for data-intensive applications. This module is equipped with XENPAK optics, allowing for flexible network configurations and upgrades. The switch fabric connection of the module is rated at 40 Gbps, providing an 80 Gbps full-duplex capacity that ensures efficient data handling and transfer rates. A key feature of the CISCO WS-X6704-10GE-3C is its 1:1 oversubscription rate, which guarantees maximum bandwidth availability for each port, making it an ideal solution for networks where high throughput is a priority. The module supports comprehensive queuing mechanisms, with eight receive queues (8q8t) and a sophisticated transmit queue system (1p7q8t), optimizing the handling of network traffic and prioritizing critical data efficiently. Each port on the CISCO WS-X6704-10GE-3C is equipped with a 16 MB buffer, enhancing the module's capability to manage and process large volumes of data without performance degradation. This is particularly beneficial in scenarios where data burst handling is critical. The module also supports jumbo frames of up to 9216 bytes for both bridged and routed packets, enabling the transmission of large data packets across the network, which is essential for optimizing network performance and reducing overhead. The maximum port density per chassis is 34 ports for a 9-slot chassis, and when deployed in a Virtual Switching System (VSS), the port density doubles to 68 ports. This scalability feature allows for the expansion of network capacity as demands increase without the need for immediate hardware upgrades. Onboard memory for the CISCO WS-X6704-10GE-3C starts at 256 MB by default, with the option to upgrade to 512 MB or 1 GB. This flexibility in memory configuration ensures that the module can be optimized based on the specific needs and requirements of the network, enhancing its capability to handle complex routing tables and extensive data processing tasks.
  • Supports four 10 Gigabit Ethernet Ports with XENPAK optics for high-speed network connectivity.
  • 40 Gbps switch fabric connection provides 80 Gbps full-duplex capacity, optimizing data transfer rates.
  • Configurable onboard memory (256 MB default) with upgrade options to 512 MB or 1 GB, catering to varying network demands.
In summary, the CISCO WS-X6704-10GE-3C is a versatile and high-capacity network module designed for enterprises and data centers requiring high-speed, reliable connectivity. Its comprehensive feature set, including high port density, advanced queuing mechanisms, and support for jumbo frames, makes it a formidable choice for organizations looking to enhance their network infrastructure with a focus on performance and scalability.


Product Number CISCO WS-X6704-10GE-3C
Manufacturer CISCO
Module Type 10 Gigabit Ethernet Fiber Module with 4 Ports
Number of Ports 4
Optical Interface XENPAK
Bandwidth to Switch Fabric 40 Gbps bidirectional, 80 Gbps full duplex
Subscriptions Ratio Equally mapped 1:1
Queue Configuration Receive: 8 queues, 8 thresholds; Transmit: 1 priority queue, 7 queues, 8 thresholds
Memory per Port 16 MB dedicated buffer
Maximum Frame Size Supports frames up to 9216 bytes for routing and bridging
Ports per Chassis Maximum 34 ports in a 9-slot chassis
Ports per Virtual Switching System Up to 68 ports
Memory Starts at 256 MB, expandable to 512 MB or 1 GB

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