04-10-2013 05:58 AM - edited 02-21-2020 06:48 PM
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
04-11-2013 01:22 AM
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
05-16-2013 08:00 AM
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
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