Forwarding, routing, and switching n Routing: the process by which nodes exchange topological information to build correct forwarding tables 口R。 Uting protocols(○ SPF BGP|S-|S,etc) n Forwarding: the operation of deciding the next-hop address to forward to a Forwarding table vs routing table a Switching: the operation of moving a packet from an input port to an output port. a IP router: one that forwards iP packets for othersForwarding, routing, and switching 6  Routing: the process by which nodes exchange topological information to build correct forwarding tables.  Routing protocols (OSPF, BGP, IS-IS, etc)  Forwarding: the operation of deciding the next-hop address to forward to.  Forwarding table vs routing table  Switching: the operation of moving a packet from an input port to an output port.  IP router: one that forwards IP packets for others