JN0-410: SDN and Automation, Specialist (JNCIS-SDNA)Demo

By Juniper · Question Mode

QuestionQ48

Network Virtualization

You are troubleshooting traffic flows in a Contrail environment and need to examine traffic entering and leaving an interface for a specified instance.

Which three tasks accomplish this objective?

Choose three
  • A Determine the tap interface through which the traffic flows.
  • B Perform a TCP dump on the identified interface.
  • C Determine the vhost0 interface through which the traffic flows.
  • D Identify the compute node hosting the instance.
  • E Identify the control node peering with the instance.
Explanation

Instance packet inspection is performed on the compute node hosting the instance. The instance’s tap interface is the relevant virtual-machine interface, and running tcpdump on that tap interface captures the traffic entering and leaving it. vhost0 is the host-side vRouter interface for tunnel encapsulation and decapsulation, not the instance interface being inspected.

Learn more

Community Discussion

No comments yet. Be the first to start the discussion!