Hi all,
My network is like this,
first line connected to modem from modem to direct LAN (Switchs).

Now my problem is internet is coming and going frequently
and also very very slowwwww.

If i connect line modem to laptop directly its working fine,(without switch).
when ever i connect to LAN then the problem is occuring..

Please solve my problem i did lot of things, all my employes are ideal without work.

Do you mean the Cable or DSL modem is connected to the switch?


Some Cable or DSL modems and switches allow you access to status information and or log files either from a browser, via SNMP, SSH or even telnet. If yours does you could monitor status and logs for anomalies. Usually anything between the ISP's head-end and the Cable or DSL modem should be solved using your ISP's service desk. After all that is what you pay them for.


If you have ever used a 56K modem then you know speed is relative ;-p Anyway, troubleshooting IMHO should start with verifying hardware is properly connected, network configuration is done correctly and all required services are running. If it is then you start diagnosing connectivity problems looking at dmesg (does the host show any anomalies or clues?), interface status (is it still configured OK?), DHCP log if any (has the machine got a lease?), dig (can it resolve any host name?), ping (can the gateway, modem, first hop router and your choice of remote hosts be reached using ICMP?), tcptraceroute or lft (same but more realistically using TCP). Logging all of that at regular intervals makes it easier to get clues about where problems occur.


No information was posted to corroborate it but that sure sounds like flaky configuration to me...

typical ip conflict issue - I may be wrong but this is the first I would have checked.

Thanks for ur replay
actually the problem with speed of internet
I tested all system connecting one by one then i find out it
Iam using 2Mbps speed net for nealy 30 pc's, so the speed is not enough for it

Thanks
Suresh