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What is bridge0 interface?
Summary. The bridge interface is a function that accommodates multiple interfaces in one virtual interface and bridges those interfaces. Each accommodated interface connected to a physical segment is handled as one segment.
What is the main purpose of creating an ethernet bridge?
An Ethernet network bridge is a device which connects two different local area networks together. Both networks must connect using the same Ethernet protocol. Bridges can also be used to add remote computers to a LAN. Many bridges can connect multiple computers or other compatible devices with or without wires.
What is true for bridged ethernet?
The rule says simply, that a bridge / switch /hub must not be connected to form a tree or a ring. That is, there must be only one path between any two Ethernet Interfaces. If more than one parallel path were to exist, a loop would be formed, resulting in endless circulation of frames over the loop.
Is Brctl deprecated?
Note: The use of brctl is deprecated and is considered obsolete.
Why do you assign an IP adress to a bridge device?
Assigning an IP adress to the bridge device (which, again, is actually a virtual NIC connected to the virtual bridge) allows your host device to route packets to the subnet created by the bridge and all of the devices attached to it. Neat!
When do you not need an IP address?
If the bridge is not required for ip routing, then it doesn’t need an ip address. Examples of this situation include: When the bridge is being used to create a private network of devices with no external connectivity, or with external connectivity provided through a device other than the bridge.
Can a device be connected to a wireless bridge?
Everything works fine except for a device that is connected to a wireless bridge. The device will not get an ip address from the DHCP.
Why do I need a MAC address for a Linux bridge?
Because a bridge is an ethernet device it needs a MAC address. A linux bridge can originate things like spanning-tree protocol frames, and traffic like that needs an origin MAC address. A bridge does not require an ip address.