Link to home
Create AccountLog in
Avatar of Tech_Dept
Tech_DeptFlag for Canada

asked on

Wireless Can't Ping Gateway That Was Assigned By DHCP

Hello Experts;

I have a client who has a small business network.  The network is connected as follows:

ISP -> Router -> Switch -> 4 wired clients
                                      -> Wireless Router in bridge mode (DHCP off) ASUS N66U

The wireless router has 3 devices connected by wire and 2 computers that connect through wireless.

All wired connections off the switch and wireless router work fine.  The problem we're having is with the computer connecting wirelessly across the street.  The computer is equipped with the ASUS USB N-66.  The computer can see the wireless network and strength is 4/5 bars.  The computer connects almost instantly and receives its IP, Gateway, Mask, and DNS server info from the router at 192.168.1.1.

After a few seconds there is an exclamation mark on the wireless tray icon saying "No Internet" and sure enough no webpages can be displayed.

I pull up a command prompt and ping the wireless router (192.168.1.103).  I get a few responses but over 80% loss.  This to me would indicate that the signal is just too weak so I check out the software utility for the USB receiver.  The three antennas show a signal strength of 50%, 65%, and 80%.  Seems like it should be enough.

The client has a laptop so I take it over the office with the computer having trouble.  The laptop has a weaker wireless receiver built in but it can connect and get on the web no problem.  Like the desktop computer, it has 4/5 bars but can ping the router and wireless router with 0% loss.  Webpages display fine.

The laptop is as far away from the wireless as the computer, has a weaker card, and the same number of bars as the desktop.  But the desktop can't get on the web.  I also tried removing the ASUS receiver and using the desktop's built-in wireless but I get the same problem: Connects to the network just fine, receives DHCP info, but can't actually ping back to the router or wireless router.  

I also tried manually assigning an IP to the desktop and setting up a reservation on the router but this did not help.

I could get a wireless bridge/repeater to place between the wireless router and struggling desktop but if the laptop works the desktop should work too.

All clients run Windows 7.

What am I missing?
Avatar of SolracM
SolracM

did you try uncheck the  
"allow the computer to turn off this device to save power" this is in DEVICE MANAGER for the wireless network adapter. This is always a problem with USB wireless adapters.
Avatar of Tech_Dept

ASKER

Yes.  I know from past experience that's almost the first thing to do when installing a network card :)
I'm sorry is this a CARD as in PCI(E) or a USB device?
The ASUS USB N-66 is a USB device and power management has been disabled on it.
can you get a reading on the RSSI from the router to the adapter at the time of connection?
is this a 1x1, 2x2 or 3x3  N connection N150 N1300 N450 N600?
can you check yo see if on the router and adpater is it at a 20G or 40G connection?
I am just wondering if the adapter can support both connection type and maybe it drops
the 40 or the 20. I had the same problem with dual channel , dual bandwidth connection it turns out that I had to stay at N150 to support ALL  of my  G-adapters(20G) (that were dropping)  by setting the router to 20G Or----- get a wireless N adapter set the router to DUAL BAND at 40G AES,now this can be costly since now;   to get N300 I had to replace all adpaters to N adapters. (with backward compatibility to G's) Sorry if it sounds confusing. I know you check it but are you SUREEEEE the right USB port(s) have power management disabled? (sorry)
ASKER CERTIFIED SOLUTION
Avatar of Tech_Dept
Tech_Dept
Flag of Canada image

Link to home
membership
Create a free account to see this answer
Signing up is free and takes 30 seconds. No credit card required.
See answer
Experts' comments did not aid in determining the solution.