A network engineer is troubleshooting a GRE tunnel that is passing traffic intermittently. The engineer runs 'show interfaces gr-0/0/0' and sees that the interface is 'Up'. The engineer also runs 'show krt queue' and notices that the GRE tunnel's next-hop is in the 'hold' queue. What does this indicate?

The tunnel's underlying route is being withdrawn and re-added frequently.

The tunnel's MTU is too large for the underlying transport.

The tunnel is experiencing packet loss due to a faulty physical link.

The tunnel is configured with a GRE key that is not matching.

A network operator is troubleshooting a GRE tunnel that is up but not passing traffic. The operator runs 'show interfaces gr-0/0/0 extensive' and sees that the output packet count is increasing, but the input packet count is zero. The physical interface shows no errors. What is the most likely cause of this issue?

The tunnel is experiencing a routing loop.

The tunnel's MTU is too large, causing the physical interface to drop packets.

The remote router is not sending any traffic back through the tunnel.

The tunnel is configured with a GRE key that is not matching.

A GRE tunnel is configured but the interface shows 'down'. What is a common cause for this?

The tunnel destination is a multicast address

The tunnel source address is not reachable from the destination

The tunnel interface has no IP address configured

The GRE encapsulation type is not explicitly configured

Which troubleshooting step is most appropriate when a GRE tunnel is up but traffic is not passing through it?

Check the routing table to ensure traffic is being routed into the tunnel

Confirm the tunnel destination is configured correctly

Check the MTU size on the tunnel interface

Verify the tunnel source address is reachable

Juniper NetworksCertified Specialist, Service Provider Routing and Switching (JNCIS-SP)

Domain 9Objective 3

Configure, Monitor, or Troubleshoot GRE JN0-364 Practice Questions (Page 3)

Part of the Tunnels domain, which makes up ~4% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~1–2 in this domain), expect 1–1 from this objective — we provide 14 practice questions to prepare you well beyond it. (estimate)

14questions here

3free pages

3concepts

Questions 11–14

11application · medium
A network engineer is troubleshooting a GRE tunnel that is passing traffic intermittently. The engineer runs 'show interfaces gr-0/0/0' and sees that the interface is 'Up'. The engineer also runs 'show krt queue' and notices that the GRE tunnel's next-hop is in the 'hold' queue. What does this indicate?
Select an answer first
12expert · medium
A network operator is troubleshooting a GRE tunnel that is up but not passing traffic. The operator runs 'show interfaces gr-0/0/0 extensive' and sees that the output packet count is increasing, but the input packet count is zero. The physical interface shows no errors. What is the most likely cause of this issue?
Select an answer first
13foundation · medium
A GRE tunnel is configured but the interface shows 'down'. What is a common cause for this?
Select an answer first
14foundation · medium
Which troubleshooting step is most appropriate when a GRE tunnel is up but traffic is not passing through it?
Select an answer first

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Configure, Monitor, or Troubleshoot GRE JN0-364 Practice Questions (Page 3)

Questions 11–14

A GRE tunnel is configured but the interface shows 'down'. What is a common cause for this?

Which troubleshooting step is most appropriate when a GRE tunnel is up but traffic is not passing through it?

Keep studying — Tunnels