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How do bridges and switches handle broadcast frames?
Bridges forward a broadcast frame to all connected ports, except the port on which the frame was received. The normal action for forwarding a multicast frame is to treat them the same as a broadcast frame.
How can a bridge know whether to forward frames?
A bridge reads a frame’s destination address and decides to either forward or filter. If the bridge determines that the destination host is on another segment on the network, it forwards the frame to that segment.
Is bridge and switch same?
A Bridge is a device that connects two LANs and controls data flow between them. A Switch is a networking device that learns which machine is connected to its port by using the device’s IP Address. Bridges divide collision domain into two parts. Switches are used to connect the work stations or computer systems.
How is a packet forwarded to a bridge domain interface?
During a packet flow from a Layer 2 network to a Layer 3 network, if the destination MAC address of the incoming packet matches the bridge domain interface MAC address, or if the destination MAC address is a multicast address, the packet or a copy of the packet is forwarded to the bridge domain interface.
What’s the difference between BVI and bridge virtual interface?
This concept is very similar to BVI but for devices running IOS-XE. Below are some of the common terminologies used : Bridge domain represents a Layer 2 broadcast domain. Bridge domain interface is a logical interface that allows bidirectional flow of traffic between a Layer-2 bridged network and a Layer-3 routed network.
How does frame processing start in Linux bridge?
Frame processing starts with device-independent network code, in __netif_receive_skbwhich calls the rx_handlerof the interface, that was set to br_handle_frameat the time of adding the interface to bridge.
Can a firewall allow traffic between bridged interfaces?
To allow traffic between bridged interfaces, you must create a firewall rule allowing traffic between the zones assigned to the interfaces. For example, for bridged interfaces configured with LAN zones, create a firewall rule to allow traffic from LAN to LAN. Bridge over physical interfaces, such as ports and RED devices.