Home > Ticket 1 – OSPF Authentication

Ticket 1 – OSPF Authentication

May 6th, 2018 in TSHOOT v2 Go to comments

1.Client is unable to ping R1’s serial interface from the client.

Problem was disable authentication on R1, check where authentication is not given under router ospf of R1. (use ipv4 Layer 3)

Configuration of R1:

interface Serial0/0/0
 description Link to R2
 ip address
 ip nat inside
 encapsulation frame-relay
 ip ospf message-digest-key 1 md5 TSHOOT
 ip ospf network point-to-point
router ospf 1
 network area 12
 network area 12
 default-information originate always

Configuration of R2:
interface Serial0/0/0.12 point-to-point
 ip address
 ip ospf authentication message-digest
 ip ospf message-digest-key 1 md5 TSHOOT

Answer: on R1 need command ip ospf authentication message-digest”

Ans1) R1
Ans2) IPv4 OSPF Routing
Ans3) Enable OSPF authentication on the s0/0/0 interface using the “ip ospf authentication message-digest” command.


There are two ways of configuring OSPF authentication:

interface Serial0/0/0
  ip ospf message-digest-key 1 md5 TSH00T
router ospf 1
  area 12 authentication message-digest


interface Serial0/0/0
  ip ospf authentication message-digest
  ip ospf message-digest-key 1 md5 TSH00T

So you have to check carefully in both interface mode and “router ospf 1”. If none of them has authentication then it is a fault.

Comments (21) Comments
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  1. Ken
    July 12th, 2018

    Today I have been rejected (810). I’m disappointed, guys there are new questions that are not there in the Dump. I hope they will update the Dump. I have thrown the money.

  2. louis
    July 12th, 2018

    ken, what did u study

  3. @Ken
    July 13th, 2018


    Sorry for you , did you used the premium material or something else ?
    Also, the new question are the related to tickets or MCQ ?
    your feed back us important !

  4. Nushi
    July 13th, 2018

    I failed as well. 12 tickets, 1 bgp simlet, 1 HSRP scenario and 8 MCQ which never seen before. :(

  5. louis
    July 13th, 2018

    Hi Nushi,

    Did u study the from Premium Membership?

  6. transmission
    July 14th, 2018

    is the answer correct for ticket 1? because there is no network command for the serial interface how is it participating in OSFP!

  7. $foo
    July 17th, 2018

    Does the Tickets in the Exam appears in the same Order as numbered here?

  8. DSL
    July 18th, 2018

    Hi team, anyone with idea which easier exam to do just to re-certify ccnp. I would appreciate if you can provide latest valid dumps for the exam.

  9. RF
    July 19th, 2018

    Can 9tut please update the MCQ so that more people don’t fail

  10. Moon
    July 27th, 2018

    My question is when I open a ticket let say 1 can I jump directly to option 3 and then 2 and 1.

  11. Anonymous
    August 3rd, 2018

    TIP :

    Client 1 : can ping DSW1, R1 SUB Interface ( and R2
    cannot ping R1 s0/0/0 ( ) and web server

    DSW1 : can ping Client 1, R1 SUB Interface,
    cannot ping R1 s0/0/0 and web server
    traceroute to web server is NOT Complete

    R1: sh run and check s0/0/0 lack of ” ip ospf auth message-digest ( this is the issue )
    R2: sh run and check s0/0/0.12 and compare with R1.

    Hope this help someone

  12. Bob
    September 11th, 2018

    I failed today as well ! There was several MCQ which I haven’t seen before either! There was also an strange Ticket question! The access port on ASW1 connected to the Client 1 was shut down administratively and I could see the “shut down” command in the ASW1 under the interface configuration but there was no option to point this issue !

  13. Anonymous
    September 16th, 2018

    OSPF Authentication is already enabled on R1 s0/0/0 interface…shouldn’t the correct answer be enable ospf authentication on R4?

  14. Ricky Bobby
    September 16th, 2018

    OSPF Authentication is already enabled on R1 s0/0/0 interface…shouldn’t the correct answer be enable ospf authentication on R4?

  15. Sleeping
    September 17th, 2018

    All my buddies who used the premium dump passed the test last week. It looks like the premium is still valid. I am not so sure about the free dump.
    I am planning to take the test this week. Wish me luck guys!!

  16. Anonymous
    September 17th, 2018

    Good luck Sleeping! Please let us know -planning on taking it at the end of Oct to re certify.

  17. bono
    September 24th, 2018

    Hi all,

    I had two questions last week which look new or same issue on different device.

    1- passive interface configured under eigrp router on DSW1 instead of R4
    2- there was no OSPF neighbor relationship between R1 and R2 but the issue was not auth under sub-int on R1

    Could you please kindly assist if anyone has any idea what these issues are regarding to as I booked another exam in two days?

    Your guidance is much appreciated.


  18. Anonymous
    September 30th, 2018

    @bono did you pass?

  19. KOKO
    October 1st, 2018

    Hi bono did you pass ?

  20. tshoot01
    October 2nd, 2018


    This website has any update recently ? new questions ?

    new labs ?

  21. Anonymous
    October 4th, 2018

    Basically the fastest way to get this is to go straight to R1. Confirm that there are not issues pinging the WEB server, NAT is a likely issue. Then work your way back to the next router and make sure it can ping the webserver. If R2 can’t and there is no entry in the routing table for the webserver then there is an routing issue. Confirm that ospf works between R1 and R2. Route redistrabution is working, default-information originate (default route) etc. Confirm that ospf is working between R1-R2. This is a very easy lab, R4 does not have a route, same with R3 and R2.

    Can be solved by a CCNA level person. Just remove the commands you don’t understand but at ccnp you can copy the missing command from one router interface to the next. Reachabliity first then is NAT working. If there is no route to R2 then pinging wont work and NAT will never happen because traffic will never reach R1. Make sure routing works first.

    This logically is simple, issue is finding the problem very quickly. CCNA 10-13 mins (you will start an client and work your way forward), ccnp about <5 mins (see above why).

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