Hi John,
I have looked at the logs and they list only information about the IPSec tunnels(which typically work) and nothing about the GRE.
That's mainly because GRE tunnels, without key/seq, are basically stateless (nothing is negotiated, if there are transmit errors you'd see that only in the link/tunnel stats, if at all).
The main issue is the IPSec tunnels come up fine but the GRE tunnels cannot send data. Either one or both GRE tunnels cannot send data.
You should check the traffic stats for the IPsec tunnels and GRE interfaces (`ip -s ...`) to see what exactly is sent/received, if possible also on the other end.
The debug logs from the Cisco end show that the tunnels come up and are torn down by the strongswan end.
Due to DPD? Or what's the reason they are torn down?
The dropped packets all happen at the RUT-950 end
How did you determine that? Regards, Tobias
