Order that packets are processed coming into an interface
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.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...