Forwarding
Problem: Finding which output port packet needs to go to
- Trivial in the case of a dual-port node.
- Eg: Repeaters or ring topologies
- Simple pt-to-pt transfer if destination directly-connected
- Flooding if destination logically connected on a bus.
- Multi-stage switching by matching address bit-by-bit
- Table-lookup otherwise. Why ?
- Destination address does not have any other coded information.