Hi, I was wondering in what order technologies process packets on an interface as they come in or go out. For instance, when a packet comes in an interface it is processed by route maps, buffers, QoS, NBAR, access-lists, NAT, MPLS, Zone Based Firewalls, CIF, routing, and numerous other technologies if they are configured. Is there something on Cisco’s web site (or elsewhere) that describes this? I am hoping to see something as detailed as possible. Also, does this apply to both routers and switches when processing packets.
For example, when troubleshooting I would like to look at this list and imagine a packet as it comes in an interface, is buffered, is processed by QoS, passes though NAT, is allowed to pass from one zone to another via a ZBF, and is processed going out a an interface to its destination host. This might be helpful in figuring out at what point a certain technology is causing the problem. Thanks for your help.
