How does the PFE determine how to forward transit traffic?

The correct answer is C. The PFE uses the forwarding table provided by the RE. The PFE receives the forwarding table (FT) from the RE by means of an internal link. FT updates are a high priority for the Junos OS kernel and are performed incrementally.

Junos OS Fundamentals

Question

Options

AThe PFE performs a destination lookup based on its own routing table.
BThe PFE determines network destinations itself based on the RE's routing table.
CThe PFE uses the forwarding table provided by the RE.
DThe PFE uses the routing table provided by the RE.

How the community answered

(51 responses)

A
2% (1)
B
6% (3)
C
82% (42)
D
10% (5)

Explanation

The PFE receives the forwarding table (FT) from the RE by means of an internal link. FT updates are a high priority for the Junos OS kernel and are performed incrementally.

Topics

#PFE#forwarding table#Routing Engine#RE/PFE architecture

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