What is the preferred way to monitor/count the maximum number of concurrent TCP connections across a router over a set interval?
Is there a MIB one can poll? Does one need to look to Netflow? Is there something one can report from a SHOW command? How about a 3rd party tool?
Packetshaper contains a variable peak-tcp-conns that pretty much describes what I'm looking for if I had one of their appliances: "Highest number of simultaneous TCP connections recorded for the interval".