Solved

Trying to configure a wireless router onto a pre-existing wired network

Posted on 2006-06-30
7
196 Views
Last Modified: 2010-03-18
I inherited a network that has 4 servers (exchange, f/p, ISA/proxy, and terminal).  The IP Address scope is 10.x.x.x with a subnet of 255.0.0.0.  The customer is wanting to add wireless capability for the laptop users in the office.  They've purchased a Linksys WRT54GR to do this.  Like all Linksys wireless routers, this device comes with the IP Address 192.168.1.1.  This office has a T1 line, which runs into a switch, which then runs into two other switches and the servers.  All desktops in the office are then connected to one of the aforementioned switches.  I have connected a Cat5 cable from one of the switches to the Internet port on the Linksys, and then from the Linksys to my laptop.  ipconfig /all on my laptop shows an IP Address of 192.168.1.100, subnet mask 255.255.255.0, and def. gateway 192.168.1.1.  I am unable, however, to get on the internet with this setup.  When I plug my laptop straight into the switch, I can get on the internet fine.

The Linksys config page doesn't allow me to change the subnet mask to 255.0.0.0 to match the LAN's subnet mask.  I can change the IP address of the Linksys, but I don't think that is much help to me, if I can't change the subnet mask.  

How can I get this router to work in this office?  Should I just try using a WAP instead of the router?  Thanks!
0
Comment
Question by:dwd4243
  • 4
  • 3
7 Comments
 
LVL 48

Accepted Solution

by:
Jay_Jay70 earned 250 total points
ID: 17017742
take the cat53 cable out of the internet jack and put it straight into one of the ethernet ports! configure the router to allow DHCP passthrough or relay so that DHCP comes from your router - make sure no other device has the 192.168.1.1 address and change the wireless IP if it does - away you go!
0
 

Author Comment

by:dwd4243
ID: 17018240
so the wireless router should work even though it's IP is not in line with the subnet mask of the other IP's on the network?
0
 
LVL 48

Expert Comment

by:Jay_Jay70
ID: 17022035
no, you will need to change the IP of the wireless box to match that of the current network
0
Portable, direct connect server access

The ATEN CV211 connects a laptop directly to any server allowing you instant access to perform data maintenance and local operations, for quick troubleshooting, updating, service and repair.

 

Author Comment

by:dwd4243
ID: 17041894
that is what i tried to do before, but the wireless router wouldn't allow me to change the subnet mask to the 255.0.0.0, which is what is configured for the LAN.  It only gives me a choice of 255.255.255.0,.128,.192,...etc.  

Wouldn't the subnet mask need to be the same as that of the other network devices?
0
 
LVL 48

Expert Comment

by:Jay_Jay70
ID: 17087012
really.....i havent seen that before - but yes, your subnet mask must be the same....can you change the lan range?
0
 

Author Comment

by:dwd4243
ID: 17090580
Solution:  I figured out how to do this.   Since I could not change the subnet mask on the wireless router to reflect the 255.0.0.0 subnet mask of the LAN, I left it as 255.255.255.0, and I made the IP Address of the router 10.10.1.10.  Since the IP Address scope of the LAN is 10.x.x.x, with a subnet of 255.0.0.0, then the first octet of the IP Address is really all that has to remain a constant.  I assigned the wireless adapters in the laptops with static IP Addresses of 10.10.1.xxx, and made sure that they reflected the LAN's gateway and DNS addresses, and it worked.

Thanks for your help
0
 
LVL 48

Expert Comment

by:Jay_Jay70
ID: 17095342
well done mate, you did most of this yourself :)
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

A brief overview to explain gateways, default gateways and static routes OR NO - you CANNOT have two default gateways on the same server, PC or other Windows-based network device. In simple terms a gateway is formed when a computer such as a serv…
Greetings, Experts! First let me state that this website is top notch. I thoroughly enjoy the community that is shared here; those seeking help and those willing to sacrifice their time to help. It is fantastic. I am writing this article at th…
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

860 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question