About the tunnel mode of IP over IPv6

[chttlyjchu]

I am trying to set up an IPv4 over IPv6  tunnel without GRE on ASR 1002. I find there are two options:

tunnel mode gre ipv6

tunnel mode ipv6

However, it seems that the two commands have the same result- using GRE IPv6 tunnnel

I do not want GRE, just plain IPv4 over iPv6 tunnel, Is it possible? 

Thanks

Twinkle

[Deepak Kumar]

Hi,

I think this will help you. https://community.cisco.com/t5/networking-documents/ipv6-6to4-tunneling-configuration-example/ta-p/3139227  

[chttlyjchu]

6to4 is IPv6-over-IPv4 tunnel but what I want is IPv4-over-IPv6 tunnel....

[Seb Rupik]

Hi there,

To tunnel, you need some form of encapsulation. GRE is the most lightweight option.

cheers,

Seb.