What is bytes xmt?

Each site connects to the other four sites, and I see only one leg between two sites that's being persistently reset. Each time, there is a Reason: Lost Service event on one side, usually in conjunction with a Reason: IKE Delete event on the other side. But during these time windows, no other sites lose VPN connectivity to the endpoint. Only the one connection between these two particular sites. So it's not like the Internet connectivity is totally broken across the board for the endpoint.

All site VPN's are configured with identical parameters and all have functioned well for years now. So I suspect that these resets are occurring quickly and then the tunnel is coming back up again. These two sites have the same ISP for dedicated fiber. The other sites don't have this particular ISP. I'm wondering if it's perhaps some internal routing issue on the ISP's end or something.

I'll paste a snippet from the syslogs below. The two endpoints are 69.135.82.90 and 74.143.200.234. If anyone has any suggestions on how to best determine which side is the likely culprit I'd appreciate it. That way I have some details to provide the ISP.

Thanks!

In that disconnect event, it has "Bytes xmt & Bytes rcv.