Which statement is true regarding the forwarding plane?
A.
The forwarding plane is contained within the Routing Engine (RE).
B.
The forwarding plane processes and evaluates exception traffic.
C.
The forwarding plane contains the Packet Forwarding Engine (PFE).
D.
The forwarding plane is not present on all platforms running the Junos OS.
Explanation:
The primary functions of the control plane are to maintain routing intelligence, control and monitor the chassis, and manage the PFE. The
primary functions of the forwarding plane are to forward packets and to implement advanced services.
The PFE is the central processing component of the forwarding plane. The PFE systematically forwards traffic based on its local
copy of the forwarding table. The PFE’s forwarding table is a synchronized copy of the information created on and provided by
the RE. Storing and using a local copy of the forwarding table allows the PFE to forward traffic more efficiently and eliminates
the need to consult the RE each time a packet needs to be processed. Using this local copy of the forwarding table also allows
platforms running the Junos OS to continue forwarding traffic during control plane instabilities.