We have a small, local ISP that is having some networking issues and I'm trying to understand the cause to better communicate with their network guys. I work with a number of companies with different network/router configurations using their service (dsl).
We have a range of issues but the most repeatable one is that packets are dropped when using a large amount of bandwidth. For example, when I run a speed test and I have a couple pings running at the same time, I see packet loss go to 50 percent and latency go to 10 times what it was. This happens regardless of the customer's configuration.
I've seen the same thing happen when someone is, for example, uploading an album to facebook. All other wan traffic becomes unstable, with high latency and lots of dropped packets. Even when we are not using much bandwidth, however, we still see intermittent packet loss and often unexpectadly high latency's for customers on their network.
- For a novice network admin trying to understand the issue, is the most likely culprit here a problem with the DSL equipment or an insufficient router to handle their traffic?
- How can I test to better understand what is going on?
- What would be the best way to demonstrate the problem to them (and that it is happening for all their customers), so as to provide their networking guy with the necessary info to resolve the problem?