Other Models


How routers process incoming packets (NAT process)

When a router receives a packet:

 

 

How routers process outgoing packets (NAT process)

When a router wants to send a packet out a port:

 

 

How devices use ARP to send IP packets

When a device sends an IP packet (flowchart here):

 

 

How devices send ARP requests

When a device wants to send an ARP request (flowchart here):

 

 

How devices process incoming ARP packets

When a device receives an ARP packet (flowchart here):

 

 

How routers process ARP requests

When a router receives an ARP packet (continuing from "How devices process incoming ARP packets"):

 

 

How an ACL works

When a router receives a packet on an interface:

 

When a router sends a packet on an interface: