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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

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 (5) Comments
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  1. Nos of simulation questions and total sub question in them
    February 10th, 2018

    Can anyone tell me number of simulation questions they have asked and how many of them are for configuring and how many of them for troubleshooting. Also can you please let me know total number of questions you people got in exam and number of sub-questions under each simulation question and troubleshooting question suing show commands ?

    M going to write on 14th feb so please if anyone could let me know exact number of sim questions as earlier they used to ask 2 to 3 simulations only and there used to be 2 to 3 sub questions in that. so its kind of confusing when other people have told that they got 8simulation questions.

  2. help
    February 14th, 2018

    where can i find sims that will be on the ICND 1?

  3. NBA
    February 15th, 2018

    @Nos of simulation questions and total sub question in them—– How was the exam? no of simulation you received for config,and for troubleshooting??? Ans on which points??

  4. EMMY
    February 15th, 2018

    I never knew a site like this is available. I am so much in love with this site.

  5. Bouya
    February 22nd, 2018

    beware guys. i’ve passed my exam today. there are new question for multiple question and drag&drop. the simlets and labs are the old ones. i used 1.23v as a reviewer

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