Matt, You might look at setting up netflow or sflow to see what protocols are going though your network and how much bandwidth they are consuming. If you are looking to figure out if you are having latency problems setup smokeping. http://people.ee.ethz.ch/~oetiker/webtools/smokeping/
On 3/14/06, Matthew Jarvis <[EMAIL PROTECTED]> wrote: > larry price wrote: > > Larry's Rough Diagnostic Checklist > > for slow internet. AKA "The Internet is slow, fix it." > > > > 1. is it DNS? > > > > Hints or links on diagnosing DNS problems? > > > > > 2. is it the LAN? > > Could be... Things were looking totally bogged down (something like > 1750ms between hops) so I reset the firewall and things improved - > perhaps just coincidentally. Now around 150ms or so... "Fast" seems to > be in the 0-60 ms range. > > The route to www.bikefriday.com was really slow, the route from there > back to me was relatively fast... hmmmmm... > > > > > 3. is something eating up all the bandwidth on the last hop? > > (people doing stupid things like bittorrent with no rate limits, > > and LimeWire, etc. can saturate a connection without even knowing, > > check traffic stats on your router, or just look at the activity > > light, compared to normal) > > Unknown - still trying to get a tool in place to monitor that > > > > > 4. Is there something physically wrong with your connection? > > You can diagnose this using traceroute, ping -S , etc. but don't > > forget to take a look at the equipment and wiring on your end, Hanging > > the telephone wire near a Halogen light, or an electric motor can be a > > source of noise, that will cause a higher error rate resulting in > > packet retransmission resulting in less bandwidth. > > > > Not sure if this would explain the Fast then all of a sudden Slow, but > there may be some lightswitch somewhere I'm not aware of.... > > > > 5. if it's your service provider pick up the phone, the more > > information you can give them (along the lines of "I'm seeing 3% > > packet loss between my router and the far end gateway and my router is > > reporting far-end CRC errors") the better. > > I'm saving traceroute output to text files on the assumption that I can > give them to someone that can interpret them properly. > > > Matthew S. Jarvis > IT Manager > Bike Friday - "Performance that Packs." > www.bikefriday.com > 541/687-0487 x140 > [EMAIL PROTECTED] > _______________________________________________ > EUGLUG mailing list > [email protected] > http://www.euglug.org/mailman/listinfo/euglug > _______________________________________________ EUGLUG mailing list [email protected] http://www.euglug.org/mailman/listinfo/euglug
