Multiple router question

[imported_GLO]

Here are the complete details,so i hopei dont confuse anyone to early in the piece.

So here is the complete details.

Old set up: Nortel CM115 Cable Modem > Dlink DI-714P+ wireless router with print server.
The DI-714P+ 802.11b wifi +4 ports switch + print server + i fitted a 7db gain antenna.

Since the Nortel would power up but wouldnt pass any data, it was time to replace it.

PART 1.
NEW Set up:
Motorola SURFboard® SBG900 Wireless 802.11g Cable Modem Gateway > Dlink DI-714P+
The Motorola SBG900 has a single ethernet port, a USB port and the 802.11g wifi.
Note: both the SBG900 as well as the DI-714P+ have built in login clients. Naturally only one is needed.

Now since the SBG900 is a wireless router and cable modem in one unit, i would normally have been able to do with out the Dlink wireless router, however the Dlink has a built in print server and more importantly i have fitted a 7db gain pigtail antenna booster to it. The SBG900 does not allow you to connect any other antenna boosters at all.

The SBG900 doesnt have a simple setting to switch between the 2 modes although Motorola have confirmed that its capable of both modes.

So i was trying to set up the SBG900 to work in "bridged mode" instead of "router mode" via the ethernet port. And then i would connect it to the WAN port on the DLink and have the DLink handle the 4port switch and 802.11b wifi.

The SBG900 is accessed by 192.168.100.1 (or 192.168.0.1) and the Dlink used to be accessed by 192.168.0.1, but i had to change it to 192.168.1.1 so there are no conflicts.

I wish to use them both as routers.

Currently the SBG900 has Wifi, NAT and DHCP all disabled, and the DI-714P+ has its Wifi and DHCP enabled. The SBG900 ethernet port is hardwired to the WAN port on the DI-714P+ using the cable from the old Nortel modem (dont know if its crossover or not) So far so good, but as i said this is basic or 'limp' mode for me as i am still looking to streamline this set up as currently none of these 2 units are automatically loging in, i have had to resort to using the software login client on one of the PCs. In short im getting by for now.

Eventually i would like to use the auto-login feature on the SBG900 as it is less likely to fail since its an ISP supplied modem (with the login client as standard) and have the DI-714P+ route all the wired and wifi traffic.

Here is a link to the Dlink DI-714P+ emulator
Check out the configuration options.

After Part 1 is running smoothly, i would like to go to the next step.

PART 2:
Once i correct the auto-login feature for my basic set up i would like to 'step
up' the configuration. The primary wifi access point
(DI-714P+) is 802.11b and feeds 4 pcs for internet access only. The DI-714P+
also is wired to 3 other PCs via the LAN ports. (Have a look at the DI-714P+ emulator. Link above)

Actually I would even like to enable the 802.11g on the SBG900 and have that running in stealth mode as a 2nd Wifi Access point for 54mb/s file transfer on the rare occasion from the HTPC.

All help is kindly appreciated!

 

[JackMDS]

I do not really understand what is your final functional goal?

You can use the Motorola as the main unit and attach the D-Link as a Switch with an Access Point and Printer server.

Instructions here: Using a Wireless Cable/DSL Router as a Switch with an Access Point

Or you can attach the D-Link through the WAN port and get double Routing if you would like to segregate the Motorola Wireless: Network Segregation - Adding security to Wireless Network (or to any peer to peer Network).

:sun:

 

[imported_GLO]

The final function goal would be to have the Motorola SBG900 handle the auto login (modem function) plus 1x ethernet port (hardwired to the DLink DI714P+) and on rare occasions use the 802.11g for the HTPCn for file transfer.(utilising the Motorola's 54Mbs wifi.

The DLink DI-714P+ would be responsible for all other PCs using both the LAN ports and wifi 802.11b and also sharing the print server which is part ofthe Dlink.

Do you think this is still possible?

 

[JackMDS]

Ok, that means that my answer above is valid.

If you want sometimes to use the Wireless functions of the Motorola, it needs to be on DHCP and Routing. Therefore, your Motorola has to be set as a Router with DHCP On.

The D-Link can be set as a Switch with Access Point and Printer Server if you want to be able to Exchange files with the Motorola Wireless using file Sharing.

You can also set the D-Link as a second Router and use VNC or Remote Desktop to exchange files with the first segment of the system.

:sun:

 

[imported_GLO]

i understand that i will use the WAN port on the Dlink if i want to use it as a router. And if i use it as a switch then i have to use an LAN port. Is this correct.

Apart from loosing a LAN port on the Dlink, what is the difference between switch mode or router mode?

 

[JackMDS]

If it used as a switch the whole system would yield one cohesive Network.

If used as a Router you would have two independent Networks.

:sun:

 

[imported_GLO]

2 independant networks is ok.

The first network really is only supplying the Internet to the Dlink and on rare occassions the HTPC ( i can use remote desktop)

The 2nd network is the hardworking network with all the PCs on it.

So i presume that DHCP can run on both units? What about NAT???

 

[JackMDS]

NAT is the Routing. If you use the WAN port it is NAT. If you connect to a regular port No NAT.

Link to: Cable/DSL Routers - NAT, Ports, SPI.

:sun:

 

[imported_GLO]

Ok, i have read all the links and suggestions.

Now, if i set up the SBG900 to enable NAT, DHCP, i cant make a connection. I presume that it is because some of the settings in the DI-714P+ are not correct.

Could anyone have a look at the Dlink DI-714P+ Emulator and make the suggestions for which settings i should use on the WAN tab? ( as i want to use it as a router.

Thanks

 

[imported_GLO]

Here is a Network Diagram that i drew up so that its easier to understand.

Credit to Ezlan.net for the orginal layout.