Our Main Metric is Ping
“Universally available”, easy to understand
- no software for clients to install
Provides loss, response time, reachability, unpredictability
select hosts carefully, concerns over routers, loaded hosts etc. (provide guidelines)
Notes:
Avoid routers, they drop pings to the router if busy.
Prefer lightly loaded or consistently loaded hosts, e.g. name server, mail gateway.