There’s that one thing that customers usually ask, and that question is if I would be able to help diagnosing a problem on the network. My answer has two parts:
- If we can capture the problem situation in packets, I will find it
- When I find it, I’ll tell you if it’s a network problem (which, in my experience of over 10 years, is the case in only about 20%)
The trouble is: there are some problems where it’s not easy to capture packets, and that’s when you don’t know the correct capture location (usually meaning “there’s too many possible locations”) or the exact time for the packets with the symptoms to be recorded – or both.