Do switches forward frames or packets?
Switches receive a frame from the source device and quickly forward it toward the destination device.
Do switches route packets?
They look into the IP packet header searching for the destination IP address (Source and destination IP are included in the packet header) and based on local routing table, route the packet to the next hop towards the destination.
How much of the frame exactly does a cut through switch have to store process before it sends the frame on its way?
Fragment free will hold the frame until the first 64 bytes are read from the source to detect a collision before forwarding.
What does a switch do with the frames it recieves?
When the switch receives this packet, it will check its CAM table to see if it has an entry for the MAC Address from which the packet came and the port on which it arrived. If it does not it will create the entry. The switch will then check its CAM table again to see if it has an entry for the destination MAC address.
How does a switch forward a frame from a port?
When PC-B replied to PC-A, the destination address (1111.1111.1111) was known to the switch. So, the switch, instead of flooding it from all ports, forwarded the frame only from the port which is connected with the destination address. Switch floods a unicast frame only if the destination address of the frame is not known to the switch.
Where does the switch find the frame address?
The switch reads the destination address of the frame and finds it in the CAM table. Since the CAM table has no entry for this destination address, the switch floods this frame from all ports except the port F0. Besides forwarding the frame, the switch also stores the source address in the CAM table.
How does cut-through switching work in a switch?
Cut-through switching was developed to reduce the delay in the switch processing frames as they arrive at the switch and are forwarded on to the destination switch port. The switch pulls the frame header into its port buffer.