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Troubleshooting Questions

May 4th, 2020 Go to comments

Question 1

Explanation

To disable the logging of syslog messages to the local disk, use the “no system logging disk enable” command.

Reference: https://sdwan-docs.cisco.com/Product_Documentation/Software_Features/SD-WAN_Release_16.3/02System_and_Interfaces/08Configuring_System_Logging

Question 2

Question 3

Explanation

When a data plane tunnel in the overlay network is established, a Bidirectional Forwarding Detection (BFD) session automatically starts on the tunnel. In the overlay network, each tunnel is identified with a color that identifies a specific link between a local TLOC and a remote TLOC. The BFD session monitors the liveness of the tunnel by periodically sending Hello packets to detect whether the link is operational.

BFD periodically polls all the tunnels on the vEdge router to collect packet latency, loss, jitter, and other statistics for use by application-aware routing. At each poll interval, application-aware routing calculates the average loss, latency, and jitter for each tunnel, and then calculates or recalculates each tunnel’s SLA.

Reference: https://sdwan-docs.cisco.com/Product_Documentation/Software_Features/SD-WAN_Release_16.3/02System_and_Interfaces/07Network_Interface_Configuration_Examples

Question 4

Comments
  1. sam
    June 2nd, 2020

    Which pathway under Monitor > Network > Select Device is used to verify service insertion configuration?
    A. System Status
    B. Troubleshooting
    C. Real Time
    D. Events

    Answer: C

  2. J2
    July 13th, 2020

    @certprepare

    Q4, there is no choice for Troubleshooting. I just cleared the exam. But i forgot the other choices. I just choose Real Time.

  3. isa
    July 14th, 2020

    Just as @J2 says, there is no option for Troubleshooting in Q4, instead is the “ACL Logs”option, I chose Real Time too.

  4. certprepare
    July 31st, 2020

    @sam, J2, isa: Thanks for your detection, we have just fixed Q.4.

  5. @eduardo.4raujo_at_g.m.a.i.l
    August 6th, 2020

    Hello where i get this questions?

  6. syedsaleh28
    September 15th, 2020

    Real time is correct answer ?

  7. magdccsar
    September 20th, 2020

    Which pathway under Monitor > Network > Select Device is used to verify service insertion configuration?
    A. System Status
    B. Troubleshooting
    C. Real Time
    D. Events

    Question 4. It seems to me that the correct answer is B….

    https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/policies/ios-xe-17/policies-book-xe/service-chaining.html

  8. maybe
    September 21st, 2020

    @Magdccsar in the reference you provided their is 2 options for monitoring the Service Insertion. As below it depends on if your looking at the hub or the spokes. On the hub you look at the OMP Services via real time and the spokes you use traceroute.

    Currently Q4 does not have Troubleshooting as an option so you would have to assume that there is only 1 option left being real time. Great pick up however and I’ve learnt some thing from the feedback.

    On a hub device, view the configured services.

    Using Cisco vManage:
    View the configured services on the Real Time monitoring page (Monitor > Network > hub-device > Real Time). For Device Options, select OMP Services.

    On a spoke device, view the details of the service chain path.

    Using Cisco vManage:
    View the service chain path on the Traceroute page (Monitor > Network > spoke-device > Troubleshooting > Connectivity > Trace Route). Enter the destination IP, VPN, and source interface for the desired path.

    Using the CLI:
    Use the traceroute command. For information, see the Cisco SD-WAN Command Reference.

  9. Anonymous
    February 22nd, 2021

    @certprepare: Is there any new questions after September 10th, 2020 ?

  10. Anonymous
    April 23rd, 2021

    I think, Real Time is a correct answer.

    On a hub device, view the configured services.

    Using Cisco vManage:

    View the configured services on the Real Time monitoring page (Monitor > Network > hub-device > Real Time). For Device Options, select OMP Services.

    On a spoke device, view the details of the service chain path.

    Using Cisco vManage:

    View the service chain path on the Traceroute page (Monitor > Network > spoke-device > Troubleshooting > Connectivity > Trace Route). Enter the destination IP, VPN, and source interface for the desired path

  11. thabs
    December 17th, 2021

    hi all

    we can i get practical labs for sdwan

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