The QSFP-H40G-CU4M Cisco 4 Meter Passive DAC Network Cable is a high-speed, copper-based cable designed for use in data center networks. Here are some of the key features and benefits of this cable:
Features:
- High speed: The QSFP-H40G-CU4M cable supports data rates of up to 40 Gbps, making it suitable for high-speed data center networks.
- Copper-based: The cable uses copper conductors, which are less expensive than optical fibers and can transmit data over longer distances than traditional copper Ethernet cables.
- QSFP+ connectors: The cable has QSFP+ connectors on both ends, which are designed to fit into QSFP+ ports on network devices such as switches, routers, and servers.
- Passive design: The cable is a passive DAC (direct attach cable), meaning that it does not require external power to transmit data.
- 4-meter length: The cable is 4 meters (13.1 feet) in length, which is suitable for connecting devices that are located within a rack or data center row.
Benefits:
- Cost-effective: The QSFP-H40G-CU4M cable is less expensive than optical fibers and can provide comparable performance over short distances.
- High performance: The cable supports high-speed data transfer rates, making it suitable for data center applications that require high bandwidth.
- Easy to install: The cable has QSFP+ connectors that can be easily plugged into compatible network devices, making installation quick and easy.
- Flexible: The 4-meter length of the cable provides flexibility in network design and can be used to connect devices that are located within a rack or data center row.
- Reliable: The passive design of the cable eliminates the need for external power, which can reduce the risk of failure and increase overall reliability.
Installing and configuring the QSFP-H40G-CU4M Cisco 4 Meter Passive DAC Network Cable involves physically connecting the cable to the network devices and configuring the devices to recognize the cable. Here are the steps for installing and configuring this cable:
- Power off the network devices: Before connecting the cable, power off the network devices that will be connected.
- Identify the ports: Identify the QSFP+ ports on the network devices that will be used to connect the cable.
- Connect the cable: Connect one end of the QSFP-H40G-CU4M cable to the QSFP+ port on one network device and the other end to the QSFP+ port on the other network device. Ensure that the connectors are securely fastened.
- Power on the network devices: Once the cable is connected, power on the network devices.
- Configure the devices: The network devices will automatically detect the cable and configure themselves to use it. However, you may need to configure the devices manually to ensure that they recognize the cable. This typically involves configuring the ports to operate at the correct speed and with the correct duplex mode.
- Verify the connection: Once the devices are configured, verify that they are communicating with each other through the cable. This can be done by checking the port status, interface statistics, and system logs.
There are several key differences between the QSFP-H40G-CU4M Cisco 4 Meter Passive DAC Network Cable and other types of network cables. Here are some of the main differences:
- Speed: The QSFP-H40G-CU4M cable supports data rates of up to 40 Gbps, making it suitable for high-speed data center networks. This is much faster than traditional copper Ethernet cables, which typically support data rates of up to 10 Gbps.
- Length: The QSFP-H40G-CU4M cable is 4 meters (13.1 feet) in length, which is suitable for connecting devices that are located within a rack or data center row. Other types of cables, such as fiber optic cables, may be able to transmit data over longer distances.
- Connector type: The QSFP-H40G-CU4M cable has QSFP+ connectors on both ends, which are designed to fit into QSFP+ ports on network devices such as switches, routers, and servers. Other types of cables may have different connector types, such as RJ45 connectors for Ethernet cables.
- Passive design: The QSFP-H40G-CU4M cable is a passive DAC (direct attach cable), meaning that it does not require external power to transmit data. Other types of cables, such as active optical cables, may require external power.
- Compatibility: The QSFP-H40G-CU4M cable is designed to be compatible with specific types of network devices, such as those with QSFP+ ports. Other types of cables may be designed for different types of devices or may be compatible with a wider range of devices.
- Manufacturer: Cisco Systems, Inc
- Manufacturer Part Number: QSFP-H40G-CU4M
- Brand Name: Cisco
- Product Name: 40GBASE-CR4 QSFP Direct-Attach Copper Cable, 4-Meter, Passive
- Product Type: Network Cable
- Cable Type Twinaxial
- Cable Length 13.12 ft
- Connector on First End: 1 x QSFP Network
- Connector on Second End: 1 x QSFP Network
- Features: Passive
- Device Supported: Network Device
- Data Transfer Rate: 40 Gbit/s
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