Intermitent internet

isitcomputers
isitcomputers used Ask the Experts™
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I have been handed this one and have no idea where to go next.
In a nutshell...I will add more later...have to run to the site now....
Business with about 10 stations, 1 W2K server(basically used as a data server), none domain.  One wireless router and one wireless ISP connection. Internet was intermitent so I have replaced the original ISP (DSL) and router with a new router and the wireless ISP connection.  Worked great for about a day or two then dropping again.  I updated the firmware on the router and it reset to factory defaults and away we went!  It did change their subnet from 192.168.2.0 to 192.168.0.0 but I changed the static printers and all was well.
I get a call this morning that the internet is down again!  I check and see that the stations have all got a local ip address on the 192.168.0.0 network and the router has a WAN address from the ISP.  The ISP wireless router has all the lights on it....yet I cannot access the internet from a station.
Suggestions?
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Commented:
can you ping anything?

is there an MTU option in the router? if there is change it to 1500

Author

Commented:
mtu is set for 1500.
I went into the router config and added my laptop in the dmz to see if I could get on the internet and to read your comments! lol
anyways, I added my address and the router reboots....my laptop works great!  Out of curiosity, I check the workstations...and they all work!  Keep in mind this was the 3rd time the router had been reset.  

It is working for now...will update later.

Author

Commented:
Did a firmware upgrade on router...seemed to be stable after that.
Thanks for your help.

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