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Detailed historical performance/monitoring.
My boss asked me a question the other day, or more correctly expressed a desire to be able to do something pretty specific. He’s tired of being told in casual conversation or in meetings that network performance was (usually) bad at a specific time (now), or more likely at a specific time 2 days ago. He, of course, asked me if there was any way we could determine this kind of issue across our whole network.
Our network is probably small compared to some of the campuses I’ve seen but still pretty sizeable (couple hundred switches). So I wondered what other Network Managers do when this question is asked. Typically if it is asked in an immediate time frame, we scramble and send someone over to the location and by the time we get there, everything is working just fine. Even for the person originally reporting the problem. I know the typical answers to these situations.
But I’ve been wondering if there is some way to keep data about performance on a wide scale (and here’s the hard part) without breaking the bank for storage or processing (or software). Is there anything that approaches what I am looking for? (and I’m sorry I can only describe it in such hand-wavy terms)
I have heard about NetFlow but am not familiar with it. I plan to investigate it though. I was wondering if there was anything else capable of doing something that approximates what I’ve been asked to do? (which seems pretty much impossible to me right now)
CIS Security Director
St. Louis, MO 63131