Summary of the entire process of packet transfer from Source to Destination when both of these devices are in different networks:

References

• Routing (L3)
• ARP

Steps Involved

Variables:

Source IP: No Change Destination IP: No Change Source MAC: Source At every Iteration Destination MAC: Destination At every Iteration

Iteration(Happens at every hop)

1. [Broadcast ARP] request and find device that has some co-relation with Destination IP
2. When device found like this, send [ARP Reply] to source MAC
3. Load [Packet to Frame and forward] from Source MAC -> Dest. MAC
4. Unload [Frame to Packet] when it has reached the destination device.

Success: Iterate until the device with Destination IP has received the packet. Fail: If Destination IP is nowhere to be found, drop the packet