What happens if the packet shown in the exhibit is received by a device running Junos OS?

Click the Exhibit button.

Click the Exhibit button.

What happens if the packet shown in the exhibit is received by a device running Junos OS?
A . The packet is received by the RE first and then redirected to the PFE.
B. The packet is received by the PFE first and then redirected to the RE.
C. The packet is handled by the PFE alone.
D. The packet is handled by the RE alone.

View Answer

Answer: B

Explanation:

IP options are exception traffic

Packets addressed to the chassis, such as routing protocol updates, Telnet sessions, pings, traceroutes, and replies to traffic sourced from the RE;

• IP packets with the IP options field (options in the packet’s IP header are rarely seen, but the PFE was purposely designed not to handle IP options; packets with IP options must be sent to the RE for processing); and

• Traffic that requires the generation of Internet Control Message Protocol (ICMP) messages.