S6750-H36C Switch

CloudEngine S6750-H36C is a next-generation enterprise-class core switch with 32 × 40/100 GE QSFP28, 4 x 40/100 GE QSFP28 ports, 1+1 power backup. It offers Forwarding performance: 1200 Mpps and Switching capacity: 7.2Tbps/ 8Tbps. The switch provides high performance, high reliability, cloud management, and intelligent operations and maintenance (O&M). They build on an industry-leading software and hardware platform and are purpose-built with security, IoT, and cloud in mind. With these traits, S6750-H can be widely used in enterprise campuses, colleges/universities and other scenarios.

What's more, S6750-H series 100GE switches support free mobility, enables consistent user experience no matter the user location or IP address, fully meeting enterprises' demands for mobile offices. The product also supports VXLAN to implement network virtualization, achieving multi-purpose networks and multi-network convergence for greatly improved network capacity and utilization. As such, CloudEngine S6750-H series 100GE switches are an ideal choice for building next-generation IoT converged networks in terms of cost, flexibility, and scalability.

What is a Switch?
A switch is a device that enables communication between two or more IT devices, such as computers, servers, printers, and more. It helps devices within a network share resources, including printers, file storage, internet access, and application processing. In simple terms, a switch acts as a "traffic hub" in a network.

Key Characteristics:

• Intelligent Forwarding: Unlike a basic hub, a switch intelligently directs data packets only to the intended recipient device based on MAC addresses.

• Efficient Communication: This targeted data transmission reduces unnecessary traffic, enhances network performance, and improves security within the local network.

• Scalability: Switches come in various sizes, from small desktop models for home/office use to large modular switches for enterprise data centers.

Common Applications:

• Connecting devices within a Local Area Network (LAN)

• Building enterprise networks, data centers, or home networks

• Supporting resource sharing and collaborative workflows

In summary, a switch is a fundamental networking device that efficiently manages and directs data flow, ensuring smooth and reliable communication between connected devices.

Core Functions of a Switch
The primary functions of a switch include:

1. VLAN Segmentation – Enhances network security by isolating traffic into separate virtual networks.

2. Targeted Forwarding – Improves network performance by accurately identifying and forwarding data only to the intended destination device.

3. Traffic Control – Optimizes network reliability and stability through mechanisms like Quality of Service (QoS) and loop prevention (e.g., Spanning Tree Protocol).

4. Link Aggregation – Increases bandwidth and provides redundancy by combining multiple physical links into a single logical channel.

   Working Principle of a Switch
   A switch operates at either the Data Link Layer (Layer 2) or the Network Layer (Layer 3) of the OSI model:

   • Layer 2 Switch: Forwards data based on MAC addresses.

   • Layer 3 Switch: Forwards data based on IP addresses.

   A switch continuously learns the MAC addresses of connected devices and records them in its MAC address table.
   The core processes include:

   1. Learning: Records the source MAC address and its corresponding port.

   2. Forwarding: Precisely forwards frames to the destination port based on the target MAC address.

   3. Flooding: If the target MAC address is not found in the table, the switch broadcasts the frame to all ports (except the source port).

   4. Update: Periodically refreshes the MAC address table to ensure accuracy and remove stale entries.