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Wireless Network Problem

We have a client who is having recurring problems maintaining a solid connection to a wireless network. The network consists of twenty-four hard-wired users on a LAN, of which eight also connect to the internet via a wireless router. The hard-wired lan is in place to run a proprietary software package and has no need for internet connectivity. The hard-wired NICS are therefore LAN only. The eight users who are on the wireless network are using the wireless for internet because in order to give them hard-wire access to the internet everyone in the building would have to have it, and management doesn't want this since most need only the proprietary software. The eight, therefore, are the only ones who have both a hard-wire and a wireless connection.

The problem is that IE seems to have trouble connecting to the wireless network whenever the LAN is present. If we disconnect the LAN line from each pc, the wireless adapter connects beautifully with no problems. When we reconnect the LAN line so that the proprietary software is available, the wireless connection is continually dropped (about 50% of the time)

How can we get the wireless and wired adapters to work together smoothly?
2 Solutions
Irwin SantosComputer Integration SpecialistCommented:
disable the wireless access to the adapter.. like turn on when not connected, and turn off when connected.
Irwin SantosComputer Integration SpecialistCommented:
If the 8 are connected to the wired LAN there is no need for WIFI.  The trouble they are having when both are connected is that the workstation is requesting another IP address via DHCP, therefore conflict/disconnect.
Irwin's pretty much stated everything... you're essentially trying to have two simulatenous connections to the same network.... you're always going to have an IP conflict that way when in the DHCP world. You'd be better off trying to have a single network, but having some type of filtering running.

Why not just have a workstation or two available for internet connectivity that can be shared? This eliminates the need for trying to do two simulatenous connections.
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LimozineAuthor Commented:
Another problem I failed to mention is that whenever everyone is connected to the wired lan with the proprietary system and uses this connection to access the internet, everything slows to a crawl. The cable ISP says the service isn't sufficient for all the users, and management didn't want to upgrade, so they removed the bulk of employees from the internet and isolated them to the proprietary system. The problem is that the remaining eight employees can't reliably connect via wireless because it is conflicting with the wired system they also need.
Do they ever need both simultaneously? Your ideal solution might actually be to have two subnets: one for everyone who uses the internet, and the other for everyone else. So the way it should work out, the people who mainly use that software should generally have their traffic pounding away in their own subnet, while sometimes getting traffic from the subnet with other users who might need it.

Question: what network hardware do you have in place right now, so we can try to come up with ideas that management can live with.
Irwin SantosComputer Integration SpecialistCommented:
after reading this.. seems like management wants to put a round ball in a square hole.

you got 32 users on the network?  Upgrade the service..why put stress on the poor IT person?  If you're paying 32 employees..what's another $50-$100 for a better quality service?

Try this... speak management's language.... monetary justification. So essentially you're going to ask them to spend a certain amount of money more. However, you're also going to get major savings based on time and productivity over time, which should balance out the initial investment AND help to bring in more money.
Irwin SantosComputer Integration SpecialistCommented:
@masnrock...well said.
@irwin - thanks.. btw, got a laugh out of the bit of your site i saw. think i can get a free hotel when i travel? after all you are superman :)


By placing in a given amount of money (which you'll figure out by checking with vendors), you will be able to cut out a certain amount of extra time trying to stay within current constraints while also reducing the amount of time wasted by employees switching between multiple networks. Come up with theoretical numbers that sound good... remember, while you're making it look like you're saving a ton of money, you also want to make sure you keep your job.

Here are some variables that you can fill in when you have ballpark figures:

CC - company cost
TT - tech time
TH - tech rate (your hourly pay)
ET - emp. time (average it out)
AER - avg. emp. rate (average employee's hourly pay)
PT - payoff time

Quick note about time: I recommend you use the number of hours per week spent on this.

But here is the formula management will be curious about:
CC = PT * ((TT * TH) + (ET * AER))

This will tell at what point the savings equal the investment. You'll be able to fill in all numbers except PT, which you can calculate by transforming your formula to the following:
CC / ((TT*TH) + (ET * AER)) = PT

Now that you know how long it'll take to pay off the investment put in by management, you'll most likely be able to get what you want. Make sure you calculate savings for a year. Upper managers love that.

Make sense?
Irwin SantosComputer Integration SpecialistCommented:
@masnrock..."@irwin - thanks.. btw, got a laugh out of the bit of your site i saw. think i can get a free hotel when i travel? after all you are superman :)"

Sure thing....we have them portable grass shacks!  :-)
This might be extremely obvious, but do the wireless and wired networks both have distinct different IP address ranges???  If they are both using 192.168.1.x for example you will have a problem.  Make sure they are both different..

ie for the wired for the wireless

Will the wired systems running the proprietary software support protocols other than TCP/IP?  If so, set them up on another protocol, then turn off the TCP/IP on the wired adapters, including the ones on the laptops.  That leaves the TCP/IP exclusively for the use of the wireless adapters on the laptops, while freeing any interference on the wired net.
I agree with 'whatbox'. Both type of networks should be on different subnets.
your problem is gateway, you cannot have 2 gateways on computers, you need to make sure the config does not have a default gateway set on both computer at the same time.

HAve your wireless internet connection have a a default gateway, and remove from LAN interface NIC 'coz there u have no need for gateway, right?

hope to help


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