On Thursday 19 January 2006 02:18, Barry Yu wrote: > In the office there is already an existing LAN with 6 desktop machine 1 dns > server / dhcp server / gateway, ip address range 10.1.10.110 ~ 10.1.10.240, > connection of entire LAN is by cable with a switch box, every machine is > working fine. Now I want to add a Linksys router WRT54G in the office to > enable 2 more laptops ( or more than 2) equipped with built-in wireless > network card for the network, how ever, these laptops can only go to the > Internet and communicate with other wireless laptop in the same wireless > group (Same ssid), but can't communicate with those wired desktops, the way > I connect the wireless router is : With a cat 5 cable one end connects from > the Internet port of router and the other end goes to one of the port in > the switch box ( Where all desktops are connected). I would imagin that > unless all of the desktop each adds a wireless network card to enable them > to join the wireless network group, otherwise 2 different network segments > can't communicate at all - Can anyone give some ideas how to make the > wireless group to join the wired group? Question: Are you using a "switch box" or a "multi-port switch"? What I know as a "switch box" is for switching things like printers or serial modems. A "multi-port switch" is a router, able to work across different subnets. There's also a "hub" whose function is similar to the switch except it won't work over different subnets. Suggestion: google for "WRT54G" That will bring up MANY sites with info regarding this router. Making an assumption that you're using a "multi-port switch", you should be able to connect the WRT54G via cat5 cable to the switch without problem. NOTE: The info above may not be accurate. It's been several years since I was able to work on commercial networks and I'm having some dementia (memory) problems. If someone finds errors, please let me know. Tom -- Tom Taylor Linux user #263467 Federal Way, WA