JN0-102 · Question #36
What are two examples of RE exception traffic? (Choose two.)
The correct answer is B. OSPF hello packets that are sent from a remote router and are destined for the local router. C. Telnet traffic that is sent from a remote host and is destined for the local router. RE exception traffic includes packets destined for the local router's control plane, such as OSPF hello packets and Telnet sessions.
Question
What are two examples of RE exception traffic? (Choose two.)
Options
- ABGP updates that travel through the local router and are destined for a remote router.
- BOSPF hello packets that are sent from a remote router and are destined for the local router.
- CTelnet traffic that is sent from a remote host and is destined for the local router.
- DTelnet traffic that travels through the local router and is destined for a remote end host.
How the community answered
(43 responses)- A5% (2)
- B81% (35)
- D14% (6)
Why each option
RE exception traffic includes packets destined for the local router's control plane, such as OSPF hello packets and Telnet sessions.
BGP updates traveling through the local router to a remote router are transit traffic, processed by the PFE, not exception traffic for the local RE.
OSPF hello packets are control plane traffic sent from a remote router and are destined for the local router's Routing Engine to establish and maintain adjacencies.
Telnet traffic sent from a remote host and destined for the local router is management traffic intended for the device's control plane (RE) to allow remote administration.
Telnet traffic traveling through the local router to a remote end host is transit traffic, handled by the PFE based on the forwarding table, not exception traffic.
Concept tested: Routing Engine exception traffic examples
Source: https://www.juniper.net/documentation/us/en/software/junos/junos-os-fundamentals/topics/topic-map/junos-os-fundamentals-architecture.html
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