Having spent my entire career with Cisco (working with IOS and NX-OS), until recently, I never realized there was a difference between the state of a system and the configuration applied to it.
Now that I spend my days in Linux I see there is a difference between the two.
We know every ethernet frame has a source and destination MAC address, but most of us probably don’t think about the third field in the header, the ethertype. In frame or packet headers every field (usually) has a reason for being, the ethertype’s purpose is a surprisingly important one.
The ASR 1000 is based on four main components: ESP (Embedded Services Processor), RP (Routing Processor), SIP (SPA Interface Processor) and SPA (Shared Port Adapter).
Each component has a varying level of intelligence when it comes to packet processing and QoS.