my problem with GRE IPv6 Tunnel

[Abood Khoeld]

Hello Everyone , i have a problem when i try to make the GRE Tunnel between 2 routers

i want to make a GRE IPv6 tunnel between 2 routers " router1 and router3" And there will also be a router3 in the middle between the 2 router , the real IP Address of router1 is 4.4.4.1/24 and the real IP Address of router3 is 2001:1111:11aa:aa11::1/64 , and the IP Address the directly connected interface with router1 in router 2 is 4.4.4.2/24 , and the IP Address the directly connected interface with router3 in router 2 is 2001:1111:11aa:aa11::2/64.

i want to make a GRE Tunnel between router1 and router3 and i want to make the the IP Addresses of the tunnel interfaces in router1 and router3 IPv6 

the real problem is that the command " tunnel destinaton <IP> " dosent support IPv6 , just IPv4 .

so can anyone help me ?   

[MHM Cisco World]

tunnel mode gre ipv6 <<- this need under the tunnel config 

ipv6 unicast-routing <<- this need in global mode

[Abood Khoeld]

Thanks for your reply, I appreciate it
I already did

But the real problem is that the command " tunnel destination <IP> " does not accept IPv6 addresses

[MHM Cisco World]

do you run ipv6 unicast-routing ?

[Abood Khoeld]

yes , im sure about that

[MHM Cisco World]

R1(config-if)#tunnel mode ipv6 <<- this first 
R1(config-if)#tu
R1(config-if)#tunnel de
R1(config-if)#tunnel destination ?
Hostname or A.B.C.D ip address or host name
X:X:X:X::X IPv6 address <<- IPv6 appear under the tunnel 

R1(config-if)#tunnel destination

[Abood Khoeld]

so that is impossible to make the real destination IP Address from IPv6 

thank you again for your replies  

[MHM Cisco World]

just give me 5 min 
I found something interest I want to check 

[MHM Cisco World]

you are correc the router not accept the command even after I add tunnel mode ipv6 
the issue is with ipv6 you use it not correct can you share the IPv6 you use in both router 

[Abood Khoeld]

ahhh , im using cisco packet tracer so that the resson why i didnt found X:X:X::X after pressing " ? "

and in this command you cant use the prefix lenght

im using 2001:AD4:1:1::/64 in the router 3 

and 199.132.1.1/24 in the router 1

and 199.132.1.2/24 & 2001:AD4:1:1::2/64 in the router 2 "the middle router between router1 and router3"

[MHM Cisco World]

IPv6 Static Tunnel GRE | Tom G CCIE Blog (wordpress.com)

this IP is not correct, I have little experience in IPv6
I try using 2001:AD4:1:1::1 <<- and it success 
you also can use IP in above lab if there is no ping between interface 

[Abood Khoeld]

thank you very much for your answer , you helped me a lot  

[MHM Cisco World]

You are so so welcome friend