the bespoke part is "what is your definition of down?". is it 10% packet loss? is it physical loss of link? is it something else? is it a combination? is it 15

the bespoke part is "what is your definition of down?". is it 10% packet loss? is it physical loss of link? is it something else? is it a combination? is it 15 seconds of $X or a full minute?