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IPV6 over IPV4 Tunneling Notes

IPv6 over IPv4 Tunneling 


 – Source:

 – Destination:


 – Source:

 – Destination:

Static tunnel

 – point-to-point tunnel

 – IPv6IP

     -> IPv6 payload only

     -> Smaller header

     -> IP protocol 41


     -> Multiprotocol support

     -> Larger header

     -> IP protocol 47

During the troubleshooting section of the R&S lab, there may be an ACL blocking IP protocol 41 or 47

R1(config)# int tu0

 ip add 2001::1/64

 tunnel source

 tunnel destination

 tunnel mode ipv6ip

     -> The tunnel mode will be GRE, by default, if the tunnel mode is not specified

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