Two subnets

[MJoshi]

Hi,

I have an ADSL router which is on a 192.168.0.x subnet that is connected to a Gigabyte wireless access point (B49G) via the WAN connection with a subnet of 192.168.1.x

One problem is that the Gigabyte AP does not pick up the DNS of the ADSL router and so I have to manually enter them?

The other problem I have is administering the ADSL router as I cannot access the gateway on the 192.168.0.x subnet?

 

[Atheus]

Plug the access point into the LAN interface, give it an IP on the 0.x subnet, and turn off it's NAT function if it has one.

 

[Goosemaster]

See if the AP came with software that can discover the AP or if a default IP adress is listed. If that address lies out of your subnet, you have to configure one of your wireless clients on that subnet so you can access the AP and change it's subnet info to the one you are using. That or you can just change your subnet setting on yoru router and have the AP immediately accessible with configuring it.

Of course this does not affect users' ability to use the AP to get on your network. It is only intended to make the AP accessible, so, basically, don't worry about screwing thigns up.

 

[MJoshi]

O.K, maybe I didn't explain this with enough detail:

ADSL router (LAN Port) --> (WAN Port) Wireless AP

Using the SmartSetup utility on the AP it automatically picks up the WAN connection but for some reason, the DNS servers are not passed through?

Meaning, I can look up a website by the IP address but not by the host name.

That is why I have had to manually enter DNS servers - I would have thought this should have worked automatically via DHCP?

Is there no way I can access the ADSL router configuration without changing the subnet on the AP to 192.168.0.x?

 

[Atheus]

Originally posted by: MJoshi
O.K, maybe I didn't explain this with enough detail:

ADSL router (LAN Port) --> (WAN Port) Wireless AP

Ah...

"I have an ADSL router which is on a 192.168.0.x subnet that is connected to a Gigabyte wireless access point (B49G) via the WAN connection"

That sounded like the AP was on the WAN of the router.

Using the SmartSetup utility on the AP it automatically picks up the WAN connection but for some reason, the DNS servers are not passed through?

Meaning, I can look up a website by the IP address but not by the host name.

That is why I have had to manually enter DNS servers - I would have thought this should have worked automatically via DHCP?

You are not using DHCP on the AP are you?.. It's not even on the same subnet as the ADSL router, so it can't get IPs and DNS servers from it.

Is there no way I can access the ADSL router configuration without changing the subnet on the AP to 192.168.0.x?

You should have both devices on the same subnet. ADSL router LAN (192.168.0.1) running NAT and DHCP server. AP with DHCP client on and NAT off (recieves 192.168.0.x, x>1) acts as a switch.

 

[MJoshi]

The AP is running a DHCP server and NAT for computers on the LAN side.

It picks up an IP address from the LAN side of the ADSL router for the WAN side of the AP (192.168.0.79)

It also picks up the correct gateway 192.168.0.1 automatically.

 

[JackMDS]

Access Points do not have WAN port. Which let me to think that you have a Wireless Cable/DSL Router and you would like to use it as an Access Point.

Link to: Using a Wireless Cable/DSL Router as a Switch with an Access Point

:sun:

 

[MJoshi]

Yep that is correct, I have a Wireless Cable/DSL router.

So how do network admins of large networks access the configuration of a router/routers on different subnets separated by a bridge etc?

 

[skyking]

they forward the appropriate ports through each hop.
In your case, this is the best advice.....
originally posted by atheus

Plug the access point into the LAN interface, give it an IP on the 0.x subnet, and turn off it's NAT function if it has one

 

[RebateMonger]

Originally posted by: MJoshi
So how do network admins of large networks access the configuration of a router/routers on different subnets separated by a bridge etc?

They do it with industrial-level routers or use servers as routers. Those routers are designed for easily configuring and maintaining routes. Home-level routers aren't.

Do yourself a big favor and put a piece of tape over the WAN port on that second router. Turn off it's DHCP function and just use it as a switch and wireless access point.

 

[Atheus]

Originally posted by: MJoshi
Yep that is correct, I have a Wireless Cable/DSL router.

*headslap*

So how do network admins of large networks access the configuration of a router/routers on different subnets separated by a bridge etc?

OK, say we have this config:

ISP --PPPoE--> Wired router WAN side (x.x.x.x) --routing--> Wired router LAN side (192.168.0.1) --Ethernet--> Wireless router WAN side (192.168.0.2) --routing--> Wireless router LAN side (192.168.1.1) --802.11g--> Wireless PCs (192.168.1.x, x>1)

Everywhere I have labeled 'routing' is where your different subnets are connected. Everything will be routed through, unless your firewall rules specifically prevent it. So 192.168.1.1 will get you the wireless router and 192.168.0.1 will get you the wired router.

 

[Goosemaster]

Originally posted by: Atheus

Originally posted by: MJoshi
Yep that is correct, I have a Wireless Cable/DSL router.

*headslap*.

ditto

 

[MJoshi]

Everywhere I have labeled 'routing' is where your different subnets are connected. Everything will be routed through, unless your firewall rules specifically prevent it. So 192.168.1.1 will get you the wireless router and 192.168.0.1 will get you the wired router.

So based on the above, there must be some routing between the ADSL router and the Cable/DSL Wireless router to allow me to access the Internet by entering manual DNS servers?

Why is it if I type in 192.168.0.1, I cannot access the wired router configuration page, as indicated in the quote above?

 

[Atheus]

Originally posted by: MJoshi

Everywhere I have labeled 'routing' is where your different subnets are connected. Everything will be routed through, unless your firewall rules specifically prevent it. So 192.168.1.1 will get you the wireless router and 192.168.0.1 will get you the wired router.

So based on the above, there must be some routing between the ADSL router and the Cable/DSL Wireless router to allow me to access the Internet by entering manual DNS servers?

Correct.

Why is it if I type in 192.168.0.1, I cannot access the wired router configuration page, as indicated in the quote above?

Hmmm... Is your IP config as I described above? Are you sure?

Also, what is the make/model of the wired router?