How do you route traffic through a GRE tunnel on Junos OS?

By configuring the tunnel to automatically learn routes from the remote end

By setting the tunnel source as the next hop

By enabling the tunnel interface as the default gateway

By configuring a static route that uses the tunnel interface as the next hop

A network engineer is configuring a GRE tunnel between two Junos devices. The tunnel must carry traffic between two loopback addresses that are not directly reachable. The engineer has already configured the tunnel interfaces with IP addresses and set the tunnel source and destination. What additional configuration is required to ensure traffic is routed through the tunnel?

Set the tunnel interface as passive in OSPF to advertise the tunnel network.

Configure the tunnel as a next-hop for the default route on both devices.

Add a static route on both devices pointing to the remote loopback via the tunnel interface.

Enable OSPF on the tunnel interfaces only, without any other configuration.

A company uses a GRE tunnel to connect two remote sites. The tunnel is up, but the engineer wants to ensure that traffic between the two sites is always sent through the tunnel, even if a direct path exists. What is the best way to achieve this?

Use a routing protocol to advertise the tunnel as a better path.

Disable the direct physical interface.

Configure a static route with a higher preference than the direct route.

Set the tunnel interface as the preferred next-hop for all traffic.

Juniper NetworksCertified Specialist, Enterprise Routing and Switching (JNCIS-ENT)

Domain 8Objective 2

Generic Routing Encapsulation JN0-352 Practice Questions (Page 3)

Part of the Tunnels domain, which makes up ~7% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~2–4 in this domain), expect 1–1 from this objective — we provide 17 practice questions to prepare you well beyond it. (estimate)

17questions here

4free pages

6concepts

Questions 11–15

11foundation · easy
How do you route traffic through a GRE tunnel on Junos OS?
Select an answer first
12application · medium
A network engineer is configuring a GRE tunnel between two Junos devices. The tunnel must carry traffic between two loopback addresses that are not directly reachable. The engineer has already configured the tunnel interfaces with IP addresses and set the tunnel source and destination. What additional configuration is required to ensure traffic is routed through the tunnel?
Select an answer first
13application · medium
A company uses a GRE tunnel to connect two remote sites. The tunnel is up, but the engineer wants to ensure that traffic between the two sites is always sent through the tunnel, even if a direct path exists. What is the best way to achieve this?
Select an answer first
14foundation · easy
Which field in the GRE header indicates the protocol of the encapsulated payload?
Select an answer first
15application · medium
A network engineer is troubleshooting an MTU issue on a GRE tunnel. The physical interface MTU is 1500 bytes. What is the maximum MTU that should be set on the GRE tunnel interface to avoid fragmentation?
Select an answer first

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Generic Routing Encapsulation JN0-352 Practice Questions (Page 3)

Questions 11–15

How do you route traffic through a GRE tunnel on Junos OS?

A company uses a GRE tunnel to connect two remote sites. The tunnel is up, but the engineer wants to ensure that traffic between the two sites is always sent through the tunnel, even if a direct path exists. What is the best way to achieve this?

Which field in the GRE header indicates the protocol of the encapsulated payload?

A network engineer is troubleshooting an MTU issue on a GRE tunnel. The physical interface MTU is 1500 bytes. What is the maximum MTU that should be set on the GRE tunnel interface to avoid fragmentation?

Keep studying — Tunnels