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IPv6 OSPF Sim

September 14th, 2017 Go to comments

Question

All routers are running IPv6 OSPF with process ID 100. The loopback0 IPv4 address is the OSPF router ID of each router.

On HQ router, a provider link is provided and you have to configure an IPv6 default route on HQ and make sure this route is advertised in IPv6 OSPF process. Also troubleshoot why HQ is not forming IPv6 OSPF neighbor with BR.

Requirements:

1. Configure IPv6 default route on HQ router with default gateway of 2001:DB8:B:B1B2::1
2. Verify by pinging provider test IPv6 address 2001:DB8:0:1111::1 after configuring default route on HQ
3. Make sure that the default route is advertised in IPv6 OSPF router HQ. This default route should be advertised only when HQ has a default route in its routing table
4. Router HQ is not forming IPv6 OSPF neighbor with BR. Troubleshoot and solve the problem

Special Note: To gain the maximum number of points, you must complete the necessary configurations and fix IPv6 OSPF neighbor issue with router BR. IPv6 OSPFv3 must be configured without using address families. Do not change the IPv6 OSPF process ID.

IPv6_OSPF_Topology.jpg

Solution

1. Configure IPv6 default route on HQ router with default gateway of 2001:DB8:B:B1B2::1:

HQ(config)#ipv6 unicast-routing
HQ(config)#ipv6 route ::/0 2001:DB8:B:B1B2::1

First we have to enable IPv6 routing with the “ipv6 unicast-routing” command then we configure a default route on HQ router.

2. Verify by pinging provider test IPv6 address 2001:DB8:0:1111::1 after configuring default route on HQ:

HQ#ping ipv6 2001:DB8:0:1111::1

Issue the ping test to see if the default route works. The ping must be successful.

3. Make sure that the default route is advertised in IPv6 OSPF router HQ. This default route should be advertised only when HQ has a default route in its routing table:

HQ(config)# ipv6 router ospf 100
HQ(config-rtr)#default-information originate

The command “default-information originate” will generate a default route and send to all other routers in the OSPF domain, provided that the local router has a default route configured.

4. Router HQ is not forming IPv6 OSPF neighbor with BR. Troubleshoot and solve the problem

Maybe interface S1/0 of HQ was not enabled with IPv6 OSPF (verify by the “show run” or “show ipv6 ospf interface” command) so we have to enable it.

HQ(config)#interface s1/0
HQ(config-if)#ipv6 ospf 100 area 0

After configuration use the “show ipv6 ospf neighbor” on HQ to see if BR is listed in the output.

Comments (30) Comments
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  1. beachuppy2
    December 7th, 2019

    The simulator does not function for me as well. I receive the “all statements are correct” display at the bottom but there are Xs on the pictures next to each statement and the ping ipv6 2001:DB8:0:1111::1 fails every time. I get the following from the show ipv6 commands:

    border-routers This command is not supported on this device
    database (empty)
    flood-list This command is not supported on this device
    interface (empty)
    neighbor (empty)
    request-list This command is not supported on this device
    retransmission-list This command is not supported on this device
    summary-prefix This command is not supported on this device
    traffic This command is not supported on this device
    virtual-links This command is not supported on this device

    Please assist or clarify if I’m were doing something wrong. My answers are below:

    ipv6 unicast-routing
    ipv6 route ::/0 2001:DB8:B:B1B2::1
    ipv6 router ospf 100
    default-information originate
    int s1/0
    ipv6 ospf 100 area 0

  2. TiV
    December 9th, 2019

    I just pass with 950/1000. I have ….

  3. umar
    December 9th, 2019

    #no ip v6 ospf 100 area 2

    you are missing this command

  4. Blanchard blinyoloekangu at gmail.com
    December 12th, 2019

    Hi umar

    Please send email me CCNA 200-125 lab I am currently preparing to write before the end of this month.

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    December 14th, 2019

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  6. hoodie
    December 14th, 2019

    both access list and eigrp was on the exam. A lot of drag and drop. Questions mostly consisted of details about protocols. Failed 770.

  7. Mimi
    December 15th, 2019

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    December 17th, 2019

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    December 25th, 2019

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    December 25th, 2019

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    December 27th, 2019
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    January 10th, 2020

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    January 13th, 2020

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    January 14th, 2020

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  15. Anonymous
    January 18th, 2020

    Hello
    I’m going to have CCNA 200-125 exam on January 24. I would be glad if you share with me the latest questions. Thanks in advance.
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  16. saeid
    January 19th, 2020

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  17. Anonymous
    January 19th, 2020

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    Preparing for my exam, soon, and need help with SIM Question.
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  18. Simon
    January 23rd, 2020

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  19. Fix sim pls
    January 23rd, 2020

    Ping is broken

  20. Lou
    February 2nd, 2020

    What is the purpose of these lines:

    HQ(config)# ipv6 router ospf 100
    HQ(config-rtr)#default-information originate

    And, how to check if the lines above worked?

    Thanks in advance.

  21. Lizzy
    February 3rd, 2020

    @Osman,

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    My exam is in few days

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    February 3rd, 2020

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    February 3rd, 2020

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  24. Mohamed Taher
    February 8th, 2020

    Please upload the this Simulation

  25. Ariel
    February 9th, 2020

    Hi 9tut,

    The IPv6 OSPF simulator does not work for me, it makes me that all the commands are fine, but I cannot ping or show the neighbor relationship. Any ideas. Thank you.

  26. BatmanAnd Robin
    February 9th, 2020

    Hello I cannot find the dwnload for this sim can anybody help?

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    February 9th, 2020

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    February 12th, 2020

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  29. Ali
    February 14th, 2020

    Dont forget to save the configuration for sure

  30. Amin
    February 16th, 2020

    I have exam in a few days. would anyone please send me lates dumps at dreamoody at yahoo dot com. thanks in advance

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