I need some clarity on this type of GRE configuration
Configuration of R3:
no ip address
ipv6 address 2026::34:1/122
ipv6 ospf 6 area 34
tunnel source Serial0/0/0.34
tunnel destination 10.1.1.10
tunnel mode ipv6
1. What type of tunnel is this? is it plain old tunnel, and in that case is in that case is is still necessary to have
tunnel mode ipv6 ?
2. Is it an ipv6 tunnel and the tunnel mode needs to be #tunnel mode ipv6 ?
3. Is it always mandatory to have a tunnel mode ?
4. what is the difference between #tunnel mode gre ipv6
& #tunnel mode ipv6 ?
Thanks in Advance