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Beginner

IPv4 DMVPN over IPv6 WAN - Configuration

Hello everyone,

I'm struggeling to get a DMVPN to work over an IPv6 WAN Network.

I have testet IPv6 connectivity from the Spoke (2001:2:2:2::1/64) to the Hub (2001:1:1:1::1/64) which is successful, there is also an IPv6 default route to my "ISP", I also have an crypto isakmp key for IPv6 addresses and my Tunnel Configuration looks like this:

Did anyone configure a scenario like this and could point me in the right direction ? :-)

Thanks in advance

Greetings,

Thomas

### HUB Configuration ###

interface Tunnel1

description ** DMVPN Intranet **

bandwidth 1000

ip vrf forwarding VPN

ip address 10.0.10.1 255.255.255.0

no ip redirects

ip mtu 1416

no ip next-hop-self eigrp 65351

no ip split-horizon eigrp 65351

ip pim sparse-mode

ip nhrp map multicast dynamic

ip nhrp network-id 1

ip nhrp holdtime 360

ip nhrp shortcut

ip nhrp redirect

ip tcp adjust-mss 1360

load-interval 30

ipv6 nhrp map multicast dynamic

ipv6 nhrp network-id 1

ipv6 nhrp holdtime 360

ipv6 nhrp shortcut

ipv6 nhrp redirect

keepalive 10 3

tunnel source GigabitEthernet0

tunnel mode gre multipoint

tunnel key 1

tunnel protection ipsec profile My-Profile shared

### Spoke Configuration ###

interface Tunnel1

description ** DMVPN Intranet **

ip vrf forwarding VPN

ip address 10.0.10.2 255.255.255.0

ip mtu 1416

ip pim sparse-mode

ip nhrp map 10.0.10.1 2001:1:1:1::1

ip nhrp map multicast 2001:1:1:1::1

ip nhrp network-id 1

ip nhrp holdtime 360

ip nhrp nhs 10.0.10.1

ip nhrp shortcut

ip tcp adjust-mss 1360

delay 1000

tunnel source GigabitEthernet0

tunnel mode gre multipoint

tunnel key 1

tunnel protection ipsec profile My-Profile shared

Everyone's tags (3)
2 REPLIES 2
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Beginner

DMVPN Tunnel Configuration with IPv6 WAN IP's ?

Hi,

I got a solution for this.

My configuration is as follows, I missed the keyword "tunnel mode gre multipoint ipv6"

### Hub ###

interface Tunnel1

description ** DMVPN Intranet **

bandwidth 1000

ip vrf forwarding VPN

ip address 10.0.10.1 255.255.255.0

ip mtu 1416

no ip next-hop-self eigrp 65351

no ip split-horizon eigrp 65351

ip pim sparse-mode

ip nhrp map multicast dynamic

ip nhrp network-id 1

ip nhrp holdtime 360

ip nhrp shortcut

ip nhrp redirect

ip tcp adjust-mss 1360

load-interval 30

keepalive 10 3

tunnel source GigabitEthernet0

tunnel mode gre multipoint ipv6

tunnel key 1

tunnel protection ipsec profile My-Profile shared

### Spoke ###


interface Tunnel1

description ** DMVPN Intranet **

ip vrf forwarding VPN

ip address 10.0.10.2 255.255.255.0

ip mtu 1416

ip pim sparse-mode

ip nhrp map 10.0.10.1 2001:1:1:1::1

ip nhrp map multicast 2001:1:1:1::1

ip nhrp network-id 1

ip nhrp holdtime 360

ip nhrp nhs 10.0.10.1

ip nhrp shortcut

ip tcp adjust-mss 1360

delay 1000

tunnel source GigabitEthernet0

tunnel mode gre multipoint ipv6

tunnel key 1

tunnel protection ipsec profile My-Profile shared

end

Greetings

Thomas

Highlighted
lap Explorer
Explorer

IPv4 DMVPN over IPv6 WAN - Configuration

Hi Thomas,

Thanks for providing your solution. I am also looking for a similar solution as it is har to get IPv4 PI prefix.

Could you describe a bit more your DMVPN design? Are you using IPV6 prefixes because it was hard to get an IPv6 PI prefix? Are you bgp multihomed?

Best Regards,

Laurent