How to correctly bridge a router / modem?

[Briandajew]

I have searched and searched on this topic on how to put a modem or router into full bridge mode, but it seems most topics are devoted to bridging wirelessly.

All I want to do is to use my router / modem as a pure ADSL modem, no DHCP, nothing, just a straight bridge to my new wireless router.

I have 2 old router / modems, an old Billion 5210s that came with the original TOT ADSL package and a Belkin F6D4630 - V4 that I bought a few years back (it has wireless and connects to ADSL)

I bought a new Cisco EA6500 that I want to use as the controlling router for the home network, and set up either the Belkin or the Billion as purely an interface between the ADSL and the network.

When I try to connect the Billion I get nothing, set in bridge mode set in whatever, it simply will not connect, so maybe it is duff?

The Belkin works as an ADSL connection and all 4 ports and wireless work as a stand alone, however, when trying to set it into bridge mode, I can actually connect with the Cisco, but the Belkin orange internet light is constantly trying to connect.

All I want to do is get either one of these to work as a simple modem, then let the Cisco handle DHCP PPOE password and log on etc. Is it really this difficult?

The Belkin has 2 apparent bridging modes, one is complete bridge which I have set up, this should not look for PPOE log on or even try to connect to the internet, but this connection is the one with the constantly flashing orange internet trying to connect.

There is a second mode - LLC Bridge 1483 - which I believe uses the Belkin to authourise the connection to the ISP, any ideas where I am going wrong here?

I set the Belkin up on its own in full bridge and it did not look for an internet connection, only showed network and power LED's, but once I connect the Cisco behind it, it reverts to lighting up everything except the wireless LED - I.E, you get power, network, ADSL etc.

Any help would be appreciated!

[keeniau96]

The Cisco/Linksys routers usually come with a CD showing very clear instructions for several installation types, including bridging. The connections and the time-sequence of making the connections is very important. If you don't have such a CD check with the Cisco support. Also look at this topic string: http://community.linksys.com/t5/Wireless-Routers/EA6500-Bridge-Mode/td-p/565496

[johng]

Are your Modem and Router ip addresses set on the same subnet ie 192.168.1.1 and 192.168.2 ?

they should be on different subnets ie 192.168.1.1 and 192.168.2.1

[wolf5370]

Are you sure the light is still "I'm trying to connect" indicator when in Bridge Mode? Could it just be handshaking/traffic signal in Bridge Mode?

Can I also clarify what you want.

Belkin -> CIsco

(full bridge) (Router/DNS)

yes? And other than the light, what is the problem you are having? If you log into the Belkin, is it connected to the Cisco (presume wireless? - otherwise what's the point other than to extend the range of the Cisco) - what does the diags say? Have you set up the default gateway on the Belkin and the DNS Server to be the Cisco router's IP address? Are you using WDS - and if so, have you set up the connection properties for the Cisico (SSID/Encryption/Passkey/etc)? Is the Cisco set up to filter out the Belkin in some way (IP filter/MAC filter)? Are they on the same sub domain?

I have a similar set up at home, different boxes (Buffalo/D-Link) - and it works fine. I always start by getting up the router (D-Link in my case) and getting that working, then set up the bridge router and get it to connect. Then set up wireless connectivity so I can connect to either router (depending which floor I am on - they have separate SSIDs).

[cacruden]

Are your Modem and Router ip addresses set on the same subnet ie 192.168.1.1 and 192.168.2 ?

they should be on different subnets ie 192.168.1.1 and 192.168.2.1

Incorrect information.

In bridge mode, your modem is acting solely as a modem. Your router is initiating the dialing and solely sending data across the modem. Your WAN (outside) network port that is connected to the modem will be assigned your public ip address assigned by the ISP, your internal LAN port on your router will have to be assigned an internal address (192.x.y.z). All devices connected to that LAN port would have the same addresses on that subnet (i.e. 192.x.y.n1, 192.x.y.n2).

[cacruden]

Are your Modem and Router ip addresses set on the same subnet ie 192.168.1.1 and 192.168.2 ?

they should be on different subnets ie 192.168.1.1 and 192.168.2.1

Incorrect information.

In bridge mode, your modem is acting solely as a modem. Your router is initiating the dialing and solely sending data across the modem. Your WAN (outside) network port that is connected to the modem will be assigned your public ip address assigned by the ISP, your internal LAN port on your router will have to be assigned an internal address (192.x.y.z). All devices connected to that LAN port would have the same addresses on that subnet (i.e. 192.x.y.n1, 192.x.y.n2).

s/b

Incorrect information.

In bridge mode, your modem is acting solely as a modem. Your router is initiating the dialing and solely sending data across the modem. Your WAN (outside) network port on the router that is connected to the modem will be assigned your public ip address assigned by the ISP, your internal LAN port on your router will have to be assigned an internal address (192.x.y.z). All devices connected to that LAN port would have the same addresses on that subnet (i.e. 192.x.y.n1, 192.x.y.n2).

[johng]

cacruden it would seem you are correct

the subnets dont have to be different unless you want to access the bridged modems interface ( setup page ) through the router.