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David-2018
Beginner

EIGRP with IPV4 & IPV6

I have this very basic ipv4 network in packet tracer using EIGRP with 3 routers & switches

 

ipv4 is setup and working correctly. with this on all 3 routers:

router eigrp 1

no auto

passive g0/1

EIGRP router-id 1.1.1.1

network 10.2.2.1 0.0.0.3

network x.x.x.x x.x.x.x 

network x.x.x.x x.x.x.x 

 

My goal is to take one link between 2 of the routers and make that IPV6. Then disable an interface on the 3rd router to force packets through the ipv6 link.

 

I am IPV6 illiterate so need some help.

 

1: I removed the IPV4 add's on both router interfaces that I want to make IPV6.

2: ipv6 unicat-routing enabled on both routers

3: ipv6 enable enabled on both serial interfaces

 

I found this list on the Cisco site but still can;t get it working.

 

        enable 

2.    configure terminal 

3.    ipv6 unicast-routing 

4.    interface type number 

5.    no shut 

6.    ipv6 enable 

7.    ipv6 eigrp as-number 

8.    ipv6 router eigrp as-number 

9.    router-id ip-address 

10.    exit 

11.    show ipv6 eigrp [as-numberinterfaces [type number] [detail

 

What is needed to change one link to an IPV6 address?

 

Any help will be greratly appreciated.

 

Thanks

 

 

 

1 ACCEPTED SOLUTION

Accepted Solutions

Thanks for the help everyone.

 

I managed to get it working. I had to do a shut, no shut on the interfaces then it worked. (both interfaces were green in PT) but did the shut and no shut and bingo.

 

Thanks again.

View solution in original post

4 REPLIES 4
Harold Ritter
Cisco Employee

Hi David,

 

First of all, you do not need to disable IPv4 on an interface to configure IPv6. IPv4 and IPv6 traffic can both flow on the same interface in parallel.

 

The configuration you posted looks like what is needed. What do you see when you do a "show ipv6 eigrp neighbor"?

 

Regards,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
Kevin SAS
Beginner

Hello

 

As Harold said, you can have both IPV4 IPV6 on your interface.

Start with IPV4 :

 

int fa 0/0
  ip add 192.168.1.2 255.255.255.0
router eigrp 1
  EIGRP router-id 2.2.2.2
  network 192.168.1.2 0.0.0.0

Then add IPV6 configuration :

 

ipv6 unicast-routing
int fa 0/0
  ipv6 address 2001:DB8:0::2/48
  ipv6 eigrp 2
ipv6 router eigrp 2
  eigrp router-id 6.6.6.2

Neighbors should be up after that :

R1#sho ipv6 eigrp neighbors
EIGRP-IPv6 Neighbors for AS(2)
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 Link-local address: Fa0/0 10 00:59:47 55 330 0 4
FE80::C802:EFF:FECC:8

Note that neighbors are using link local add and not global unicast configured to enable adjacency

 

Hope this helps

 

Thanks for the help everyone.

 

I managed to get it working. I had to do a shut, no shut on the interfaces then it worked. (both interfaces were green in PT) but did the shut and no shut and bingo.

 

Thanks again.

View solution in original post

Hi,
so please mark this post as answered to help others people