You work as a network engineer for SASCOM Network Ltd company. On router HQ, a provider link has been enabled and you must configure an IPv6 default route on HQ and make sure that this route is advertised in IPv6 OSPF process. Also, you must troubleshoot another issue. The router HQ is not forming an IPv6 OSPF neighbor relationship with router BR.
Topology Details
Two routers HQ and BR are connected via serial links.
Router HQ has interface Ethernet0/1 connected to the provider cloud and interface Ethernet0/0 connected to RA1.
IPv6 Routing Details
All routers are running IPv6 OSPF routing with process ID number 100. Refer to the topology diagram for information about the OSPF areas. The Loopback 0 IPv4 access is the OSPF router ID on each router.
Configuration requirements
(1) – Configure IPv6 default route on router HQ with default gateway as 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 on 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. You must troubleshoot and resolve this issue.
Special Note: To gain the maximum numbers 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
Explanation/Reference:
Requirement (1): Configure IPv6 default route on router HQ with default gateway as 2001:DB8:B:B1B2::1.
HQ >enable HQ #conf t HQ (config)#ipv6 unicast-routing HQ (config)#ipv6 route ::/0 2001:DB8:B:B1B2::1 HQ (config)#end
Requirement (2): Verify by pinging provider test IPv6 address 2001:DB8:0:1111::1 after configuring default route on HQ.
HQ #ping 2001:DB8:0:1111::1 !!!!!
Requirement (3): Make sure that the default route is advertised in IPv6 router HQ. This default route should be advertised only when HQ has a default route in its routing table.
|Here you must advertise the default route in IPv6 OSPF on HQ|
HQ #conf t HQ (config) #ipv6 router ospf 100 HQ (config-rtr) # default-information originate HQ (config) # end
Requirement (4): Router HQ is not forming IPv6 OSPF neighbor with BR. You must troubleshoot and resolve this issue.
1. Verify the OSPFv3 advertise on Serial 1/0 using the show run command:
HQ #show run ! interface serial1/0 !
Note: Interface Serial 1/0 missing OSPFv3 advertise
2. Advertise the OSPFv3 on Serial 1/0:
HQ #conf t HQ (config)#interface s1/0 HQ (config-if)#ipv6 ospf 100 area 0 HQ (config-if)#end
3. Verify after OSPFv3 advertise:
HQ #show run !interface serial1/0 IPV6 OSPF 100 area 0 !
Finally: Save the configuration
HQ# copy running-config startup-config
Hi,
I cant ping the address 2001:DB8:0:1111::1,
i have a request timeout.
Are you sure the configurations are correct??
And i have tried the command below but it doesn’t apply when i click enter :
default-information originate always
U need to wrrite ping ipv6 2001:DB8:0:1111::1
based on the request ” Make sure that the default route is advertised in IPv6 router HQ. This default route should be advertised only when HQ has a default route in its routing table” we need to use
– default-information originate – default gateway must be configured.
default-information originate always – advertised default gateway even if the default gateway is not configured.
Confirmed! Thanks you!
I think we dont need an always keyword in “default-information originate always” command in this case.
“If you add the always keyword it will advertise the default route even if you don’t have it in the routing table” and
we are told that “this default route should be advertised only when HQ has a default route in its routing table.”
ok, thanks you so much!
why you didn’t redistribute the static default route in eigrp ?
how other routers will know that ?
Please remove the question i supposed to ask it in another lab
https://itexamanswers.net/ccna-certification-eigrp-configuration-lab-simulation.html
CLI on Packet tracer is locked? How to practice LAB on packet tracer? Please help!
You must access the HQ router using the console port from the PC-PT
Click “PC-PT (Console)” –> “Desktop” tab –> “Terminal” –> “OK”