[c-nsp] ipv6 tunnels and static routes

[Bernhard Schmidt]

On 2005-03-31, Pierfrancesco Caci <p.caci at seabone.net> wrote:

[6PE Setup]

> Pings and traceroutes done on the GSR where the tunnel is defined work properly:
[...]
> ...while from another router:
>
> R_7206A-MI_MM_19#ping 2001:41A8:604::1  
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 2001:41A8:604::1, timeout is 2 seconds:
> .....
> Success rate is 0 percent (0/5)
>
> R_7206A-MI_MM_19#trace 2001:41A8:604::1  
>
> Type escape sequence to abort.
> Tracing the route to 2001:41A8:604::1
>
>   1 2001:41A8:600::1E 12 msec 8 msec 12 msec
>   2  *  *  * 

I have never used 6PE so I'm not really sure, but I guess it could be
connected with the source address selection of your second cisco. Cisco
chooses the IPv6 address of the egress interface as source address for
your trace and ping. If the egress interface has no IPv6 address it
might become confused and use something like mapped addresses and would
break.

When you enter traceroute without options it will ask you for a source
address, try using a local address to R_7206A-MI_MM_19 there.

As said, I never used 6PE, but I guess this could be the case here.

Bernhard