PFE: Packet Forwarding Engine
Question
Which statement describes the PFE?
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D.B
In Juniper Networks routers and switches, Packet Forwarding Engine (PFE) is a specialized hardware chip that performs packet forwarding and processing functions. It's responsible for forwarding data packets between interfaces at high speeds and with low latency.
Answer A is incorrect because the PFE doesn't control the Routing Engine (RE) by providing Layer 2 and Layer 3 forwarding tables. Instead, the PFE has its own forwarding table that it uses to make forwarding decisions.
Answer B is partially correct because the PFE does implement advanced services such as policing, stateless firewall filtering, and class of service, but it also performs basic forwarding functions like routing and switching.
Answer C is correct because the PFE performs packet forwarding in hardware and sends traffic to the RE for higher-level processing, such as policy evaluation or routing updates.
Answer D is incorrect because the RE is responsible for monitoring hardware and environmental status, not the PFE.
Therefore, the correct answer is C: The PFE sends traffic to the RE for systematic packet forwarding.
