How to use TP LINK 8817 in bridge mode?

prateekS

prateekS

Guide
blr_p said:
Ability to connect with USB port in addition to ethernet.

If you just want a simple modem why not look at the TD-8616 , check the docs to see if it supports bridge mode.
Click to expand...

vivek.krishnan said:
Would suggest to get the free modem (in bridge mode) from them and use any router of your choice in PPPoE mode. Keep a spare modem if you can just in case.
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How to use TP LINK 8817 in bridge mode?
My friend received it today,he is using it in PPPOE mode currently !

He has a TP LINK WR841 router to use along with it, which is DDWRT capable.....
 
prateekS said:
How to use TP LINK 8817 in bridge mode?
My friend received it today,he is using it in PPPOE mode currently !

He has a TP LINK WR841 router to use along with it, which is DDWRT capable.....
Click to expand...

You have to manually set which mode do you want to use in setting..
Most modem setting can be open through 192.168.1.1
 
Yeah i tried , i set the 8817 modem to bridge mode , and then entered id-password in router ..but no internet access !

Ok got the router to work in bridge mode !

Any advantages?

Also , i cant acces the modem anymore , so how do i reboot it now ?
 
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Power switch. Should not need to reboot the modem though.

Advantage if you can call it that is this is the way you operate an individual modem & router. Its the way wifi router only units will work with seperate modems. its what the router vendors recommend, otherwise you end up with a double NAT situation which can be tricky to configure.

See, this is why i recommended the 8616 which is a modem only, the added features (ie router) of the 8817 are redundant in this configuration.
 
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8817 is modem only mate !

WR841 is the router to be used !

After bridge mode , the router , i.e. 8817 cannot be accessed by 192.168.1.1 , which was earlier accessible in PPPOE mode !
 
prateekS said:
Nope after reading a lot on the internet, realised that the modem cannot be accessed anymore..
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That's the way it is. Otherwise you end up with a double nat which will be difficult to configure in stock.

Since the 8817 also allows a USB connection, you can access it directly. Thing is how to route requests to the modem ip address directly and everything else to go through the wifi router. Static routes might allow it. this is theory am not sure how to do it in practice.
 
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@blr_p

correction : you cannot access the modem simultaneously... with usb and eth interfaces.

also, once bridged, the modem does not have an IP address per se...
 
ok, simultaenous usb & ethernet will not work. Lets take ethernet only then.

Modem is in bridge mode and you connect it directly to your pc via ethernet.

You can certainly access the modem's admin page. So modem does have an ip address.

I spent quite a bit of time fiddling around with this some time back and gave up. Always felt it was possible but did not know the right way. Was not sure where the problem was.

The router has a wan port that is connected to the modem. So its the router that prevents you from accessing the modem.

Connect the modem to a lan port on the router turns the router into a hub and you can access the modem again, but then you cannot log on to the internet.

I think you have to be able to get into the routers console and configure something. It wont be doable using the web interface.
 
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blr_p said:
ok, simultaenous usb & ethernet will not work. Lets take ethernet only then.

Modem is in bridge mode and you connect it directly to your pc via ethernet.

You can certainly access the modem's admin page. So modem does have an ip address.

I spent quite a bit of time fiddling around with this some time back and gave up. Always felt it was possible but did not know the right way. Was not sure where the problem was.

The router has a wan port that is connected to the modem. So its the router that prevents you from accessing the modem.
Click to expand...

some corrections :

the router does not prevent you from accessing the modem - the modem does not have an IP address since bridging is at the layer2 level, where IP addresses do not really exist.
of course if you plugin the modem to the desktop - and assign IP addresses on your lap/desk top, you can access the modem.. but at this point you are not really bridging it, till you use PPPoE dialin on the computer - thats when the bridging kicks in!

so post bridging no access is possible.
 
ok, so the only way you access the modem is the modem cannot be set in bridge mode, which means a double nat situation.
 
I think the router does have a role in preventing us from accessing the modem. The router is designed to give different ip range to its wan port and LAN ports for nat to be effective.
If you look at router Web console, there should be some table listing routing that is in place. All traffic from modem is terminated to router. Then it is again rerouted to new IP range on LAN side.
I was actually trying to figure this out myself by adding new routes in my linksys router, but didn't succeed. The router didn't allow same subnet and IP range for Wan and LAN Ports.
 
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