How is a frame/packet processed when it gets to a router?

Question

Explain how a frame/packet is processed when it gets to the router.

Answer 1

The router inspects the packet header and compares the destination address to the routing table. If the router has the destination network in its routing table it forwards the packet to the appropriate interface. If it does not have the destination network in its routing table it discards the packet.

Routers operate at layer 3 and could care less about MAC addresses.

Answer 2

Say a file is being copied from one machine to another, something must keep track of all the packets so that the file can be reassembled. If many machines are talking to the same machine at once, that machine must somehow keep track of which packets it sends to or receives from each of the other PCs.

If one of the machines in the network has its network card replaced, the only way to distinguish one machine from another is the MAC address. One machine keeps a list of all the MAC addresses on the network and the names of the machines so that packets and names can be correlated. If a PC's network card is replaced, the network, after queries, can update the list to associate the name of the PC with its new network card's MAC address.

Bottom line: it reassembles the packets to the correct MAC address.

Answer 3

Basics
http://www.gardenwatcher.com/Ibasics.htm

Answer 4

to know about that we need to know about the seven layers on a packet . the ISO OSI layer. when a packet it gets to a router. it will check the ip address and the mac address on the packet and it will forward the packet to the destination computer or the router which is connected to that computer..

and if u need to know more about the packet processing u need to study the seven layers on the ISO OSI model and this is not depended on the routers.