The Network Layer: Data Plane

one of network layer protocols in every Internet device

• internet

• routers

• algorithms

• sender

In transport segment from sending to receiving host, encapsulates segments into datagrams, passes to link layer...

(a)  

one of two control-plane approaches...

• software-defined networking (SDN)

• modern routing algorithms

• network-wide

• local

what is the decentralized switching

• forward based only on destination IP address (traditional)

• forwarding rate into switch fabric

• complete input port processing at ‘line speed’

• forward based on any set of header field values

TCAMs definition...

(a)  

queued datagram at front of queue prevents others in queue from moving forward...

• Input port queuing

• Output port queuing

• Buffering

• Head-of-the-Line (HOL) blocking

Required when datagrams arrive from fabric faster than link transmission rate

• buffer management

• Scheduling discipline

• Buffering

• Cisco CRS router

IP belongs to

(a)  

device interfaces that can physically reach each other without passing through an intervening router

• receiver

• subnet

• host

• sender

CIDR belongs to...

(a)