Bridge

Bridges are devices that are used to connect two or more networks together, allowing them to communicate with each other and share resources. They operate at the data link layer (layer 2) of the OSI model and are used to connect networks that use the same protocol, such as Ethernet or Wi-Fi.

There are several different types of bridges, including:

  1. Local area network (LAN) bridges: These are used to connect two or more LANs together, allowing devices on different LANs to communicate with each other.
  2. Wireless bridges: These are used to connect two or more wireless networks together, allowing devices on different wireless networks to communicate with each other.
  3. Wide area network (WAN) bridges: These are used to connect two or more WANs together, allowing devices on different WANs to communicate with each other.
  4. Network segmentation bridges: These are used to divide a single network into two or more smaller networks, allowing for better traffic management and security.

Bridges operate by filtering traffic between segments based on Media Access Control (MAC) addresses. Bridges act as filters, forwarding traffic between networks only when necessary, and helping to prevent unnecessary traffic from clogging up the network.

Bridges also help to improve network security by limiting the flow of traffic between networks and can be used to segment networks for better traffic management and security.


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