On 17 Dec 2000, Sean Donelan wrote: > Most network providers ping their routers for network status. Several > providers even track RTT to detect changes. But very few customers > connect to routers. I'd disagree with this, at least from what I've observed of our customers... I see a fairly steady stream of ICMP directed to the loopback and tail-circuit interfaces of our core and tail-circuit routers from customer address space, and if I were to guess, I'd say that 10%-15% of our customers were using some sort of ICMP-based uptime-monitoring packages which are looking at their Internet connection, among other things. From talking with them, I think most of them are using them to monitor WAN and VPN link uptime, and that they just throw our router into the list as an afterthought. -Bill