[Ipv6] Conflict with EIGRPv3 and OSPFv3

[melve]

Hello people, I've been having trouble making OSPF and EIGRP work in the same topology. I managed to make EIGRP work between Laptop0 and R2, but once I configured OSPF between PC0 and R2, EIGRP stopped working. Here is a screenshot of the topology and the configuration I did in the 3 routers:

R1(config)#ipv6 router eigrp 1
R1(config-rtr)#eigrp router-id 1.1.1.1
R1(config-rtr)#no shutdown
R1(config-rtr)#exit
R1(config)#int s0/0/0
R1(config-if)#ipv6 eigrp 1
R1(config-if)#int g0/0
R1(config-if)#ipv6 eigrp 1
R1(config-if)#exit

-----------------------------------

R2(config)#ipv6 router eigrp 1
R2(config-rtr)#eigrp router-id 2.2.2.2
R2(config-rtr)#no shutdown
R2(config-rtr)#exit
R2(config)#int s0/0/0
R2(config-if)#ipv6 eigrp 1
R2(config-if)#exit

R2(config)#ipv6 router ospf 1
R2(config-rtr)#router-id 2.2.2.2
R2(config-rtr)#exit
R2(config)#int s0/0/1
R2(config-if)#ipv6 ospf 1 area 0
R2(config-if)#exit

-----------------------------------

R3(config)#ipv6 router ospf 1
R3(config-rtr)#router-id 1.1.1.1
R3(config-rtr)#exit
R3(config)#int s0/0/1
R3(config-if)#ipv6 ospf 1 area 0
R3(config-if)#int g0/0
R3(config-if)#ipv6 ospf 1 area 0
R3(config-if)#exit

Thanks in advance, and excuse my poor english!

EDIT: File attached.

[Deepak Kumar]

Hi,

can you share your LAB in an attachment?

Regards,

Deepak Kumar

[melve]

Yes! Here it is :)

[Deepak Kumar · Accepted solution]

Hi,

I found that you forget to redistribution routes between EIGRP and OSPF.  Route redistribution allows a network that uses one routing protocol to route traffic dynamically based on information learned from another routing protocol.

Second issue found with IPv6 Subnetting:

Here is the missing configuration on R2:

ipv6 router ospf 1
router-id 2.2.2.2
redistribute eigrp 1 metric 1000 
!
ipv6 router eigrp 1
redistribute ospf 1 metric 100000 10 255 1 1500

Issue Second: Subnetting issue on R1 to Laptop0 and R3 to PC0. Those subnets are overlapping.

R1 Subnet on Gig0/0: FEC0:AC8::/108

Range: fec0:ac8:0:0:0:0:0:0
            fec0:ac8:0:0:0:0:f:ffff

R3 subnet on Gig0/0:: FEC0:AC8::1:0/111

Range: fec0:ac8:0:0:0:0:0:0
          fec0:ac8:0:0:0:0:1:ffff

So I changed IP subnet on the R1 as below:

interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
ipv6 address FEC0:AC8::1:0:1/108
ipv6 eigrp 1
ipv6 enable

Regards,

Deepak Kumar

[melve]

---

@Deepak Kumar wrote:

Issue Second: Subnetting issue on R1 to Laptop0 and R3 to PC0. Those subnets are overlapping.

R1 Subnet on Gig0/0: FEC0:AC8::/108

Range: fec0:ac8:0:0:0:0:0:0
            fec0:ac8:0:0:0:0:f:ffff

R3 subnet on Gig0/0:: FEC0:AC8::1:0/111

Range: fec0:ac8:0:0:0:0:0:0
          fec0:ac8:0:0:0:0:1:ffff

---

Indeed! That was the issue! Thank you very much! :D