Linux brctl Command: Network Bridge Setup

brctl is a command-line tool in Linux system for managing network bridge devices in the Linux kernel. It offers a simple and effective way to create, configure, and manage network bridges to connect multiple network interfaces together.

Here are common uses of the brctl command in a Linux system:

1. Create and configure network bridges: Use the “brctl addbr” command to create a new network bridge, and add physical or virtual network interfaces to the bridge using the “brctl addif” command.
2. Display information about the running network bridges: You can use the command “brctl show” to view the network bridges that currently exist in the system and their related information.
3. Delete network bridge: Use the command brctl delbr to remove the specified network bridge.
4. Change the properties of network bridging: You can modify the parameters of network bridging by using commands like brctl setageing, brctl setfd, and brctl sethello.

Overall, the brctl command is very useful for managing network bridge devices in Linux systems, especially when building complex network topologies or implementing network isolation.