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Does a bridge have a MAC address?
The bridge is a layer 2 device in the OSI model, meaning that it uses the MAC address information to make decisions regarding forwarding data packets.
What is bridging in TCP IP?
A network bridge is a computer networking device that creates a single, aggregate network from multiple communication networks or network segments. This function is called network bridging. Bridging is distinct from routing. In the OSI model, bridging is performed in the data link layer (layer 2).
Do you need an IP address for a bridge?
You do not need to have an IP configured for a bridge, the same way you do not need to have an IP configured for an ethernet device, on any machine (be it host/guest or whatever). However, if you have a device/bridge that has no IP address, you cannot expect it to be usable by the party that has it not properly configured (be it host or guest).
Do you need an IP for a bridge in Linux?
You do not need to assign an IP to a Linux bridge. Here is an example of what it looks like in /etc/network/interfaces. br0 is the bridge, which is connected to the eth0 interface: Thanks for contributing an answer to Ask Ubuntu! Please be sure to answer the question.
Can a network interface have no IP address?
If all you need is to do bring an interface up without assigning it an IP address then you don’t need to do any more. However, I wanted to be able to use this interface with SIMH or QEMU so I also needed to created a virtual device and bridge it to the physical interface.
How can I Bridge two interfaces with IP / iproute2?
Using a fix cost and disabling the processing of BPDUs and enabling root_block is somehow simmilar to a guard-root feature from switches. Other features like vepa, veb and hairpin mode can be found on bridge link sub-command list. The vlan object from the bridge command will allow you to create ingress/egress filters on bridges.