Network Mystery

[CubanCorona]

Ok, so now it seems to be working again, and when I ping google, there's only about a 7% loss (which is still horrible). The router pings fine, with no loss at all ~ 5ms. Next time it goes bad again, I will try pinging the router and see what happens. I susupect it will still be fine.

So it has something to do with what is happening on the network. Could be a bandwidth hog? Could be a worm ? (Although I've scanned the network personally and with SNORT and not found anything suspicious.) Could be that when there is a lot of traffic the hubs absolutely choke.

It's not a problem with the DSL connection itself because, like I said, when I unhook everyone else from the internet and plug into the router it works beautifully.

 

[spidey07]

if while the problem is occuring pings to the routers internal address are 100%, but pings to internet sites are sporadic then

1) router is having trouble
2) your DSL line is full and somebody is downloading a lot

hope that helps.

 

[gunrunnerjohn]

I'd be looking for poor connections between the router and DSL modem, and from the DSL modem to the phone company entry block. It's not at all normal to have any measurable packet loss if everything's working properly. I just fired off 50 pings to yahoo.com two times, no packet loss. This is normal operation here, unless something's broken.

 

[Genx87]

Ok so it appears the internal network is ok. I would suggest having the lines looked at. I had this exact same issue with my DSL and Cable modems. Both times the lines were recieving too strong a signal and it was causing interference.

 

[CubanCorona]

So we replaced the hubs with switches and things are looking much better... so far. *Fingers crossed*

There were a couple of people on the network with unreasonable amounts of outbound traffic (file sharing.) They have been disconnected and they will be talked with.

I'll let everyone know how it turns out!

 

[tjmaxz]

Maybe check the NAT table on the router also. It might be the NAT table is full and causing the packets drop in the connections. Like you said, file-sharing programs definitely would affect the number of entries in the NAT table.