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#2990 - 01/02/17 04:58 PM New to Network Analysis
Asa001 Offline

Registered: 01/02/17
Posts: 1
Loc: Toronto, ON, Canada
Hi There,
Any light to shed on this> would be helpful. When MacOS (10.11.6) computer on GigE network is plugged directly to modem/router (SmartRG , Gentek with latest firmware) to ISP download and upload are consistent between 25Mbs Down and 7Mbs down. When network switch is plugged into Modem/Router download lags between 600Bps and 4Mbs down and 1.2Mbs and 4.5Mbs up. No idea what is going on, on the network. This issue just seemed to spontaneously start about a month ago. ISP will not do anything as they say speed is consistent from Router/Modem to first hop so not their issue. Great tool BY THE WAY! If I can get a handle on interpreting results will definitely purchase and recommend!

#2991 - 01/03/17 03:24 PM Re: New to Network Analysis [Re: Asa001]
Gary Offline
PingPlotter Staff

Registered: 10/30/13
Posts: 185
Hi Asa,

Thanks for getting in touch - and thank you for trying out PingPlotter!

There are a few things that stood out in the results that you've provided here: first being that there are some patterns of latency occurring at hop #1 (some mild "spikes") that seem to be carrying through your entire route. There's also some packet loss occurring at hop #2 that seems to be continuing through the rest of your route. Both of these occurrences imply that something pretty "close to home" may be causing you issues (something between the machine running PingPlotter, and hop #2).

We're assuming this trace was preformed with the network switch you mentioned plugged in - is that correct? If so, does removing the switch and plugging your computer directly into your modem produce better results in PingPlotter (it sounds like it does, but we just want to be sure).

If bypassing the switch and connecting directly to the modem produces better results (and a better experience with your network), the switch itself *may* be the culprit here. At this point, it'd be worthwhile to test this theory a bit further (run some tests with the switch plugged in, and removed - and compare results) to see if you can further prove (or disprove) this theory.

We've got a great guide that goes over using PingPlotter to locate (and solve) network issues like this one, which may prove helpful to you here:

If you should find yourself with any questions, or needing any further guidance - please don't hesitate to reach out!

Best wishes,



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