While at Cisco Live today, I was struck by the traffic patterns on the show floor. Wherever there was a traffic jam, it seemed as though it was caused by a few people walking slower than everyone else, or by a momentary obstruction that halted traffic. Enterprise networks share many of the same attributes (and problems) that show floors do in that respect. The part that makes it worse for enterprise networks (vs. show floors) is that there are mission-critical applications that run on top of these networks. When networks have performance issues (even momentary ones), the impact on these applications can be catastrophic.
In the world of application delivery and performance management, it’s not easy on the applications or networking operations side to troubleshoot and resolve end-to-end issues. I‘m sure you have heard of Mean Time To Resolution (MTTR); frequently used for measuring how long it takes to resolve a particular problem from the time a trouble ticket is open to when the problem is resolved (i.e. when the ticket is closed). Have you heard of Mean Time To Innocence (MTTI), which is basically the metric for how long it takes to prove the issue wasn’t your responsibility?