how to browse the modem config webpage?

[chraso]

Hello everyone,

I have a modem(wireless connexon) and a static ip(connection type=IPoE).

The router and modem is a bit far from my office and I want to chk the wireless signal quality and other stuff for the maintenance. I want to manually reboot it sometimes when signal drops.
I do know the device ips.

My router is TP-Link W8968 but don't know what type of wireless modem it is.

I did put the modem's ip in the browser address but it doesn't connect.

Is there a way I can brower my modem except plugging the modem directly into my laptop/pc?

 

[anotherdrew]

Probably ... It depends on if your public static IP address is on your router's WAN port or the modem. If it's on the WAN port of the router, then the modem is probably running in a transparent or bridge mode (meaning it only passes data, it doesn't look at it). If your modem is in this mode, it is unlikely that you will be able to log into it unless you are directly connected. Having a model number would help, so I could look at the user manual.

If the WAN port of the router has a private IP address (ones starting with 10, 192.168, or 172.16-172.31), then it should also have a gateway with a private IP address. This address should be the IP address of the LAN side of the modem and you should be able to access the modem by putting that IP address into your browser.

Now, that all sounds confusing, but it is the best way to determine how it is setup. There is a simpler way to try, but it doesn't always work.
1. Open a command prompt.
2. type "tracert google.com". This will give you the hops from you to google. The ones to look at are the first 2. The first should be your router (192.168.1.1 or something similar). If the 2nd IP address is also a private IP address (192.168.x.x or 10.x.x.x), then that is your modem. Use that IP address to access your modem. If the 2nd IP address is a public IP address, then it is less likely you can connect to it without being directly connected. The problem is that some devices will not show their IP address on a tracert request and so it doesn't always work.

If you are not sure, feel free to list your tracert, but ONLY LIST PRIVATE IP ADDRESSES.

 

[chraso]

I know the 2nd IP, but the page doesn't open in browser if I'm connecting through router.

If I connect the modem directly I can browse the modem config page!

 

[anotherdrew]

Knowing the 2nd IP is a good first step, but you also have to know how the network is setup. Maybe this page will help a bit:
https://github.com/RMerl/asuswrt-merlin/wiki/Access-modem-Web-UI-on-WAN-port-(no-script)

If your setup is similar to the one in the picture, then you should be able to access the modem. If instead the router's WAN port is getting your public IP address, then you will not be able to access the modem.

 

[Beezy]

Your modem and router are probably on different subnets. The modem could be 192.168.0.1 but the router might be 192.168.1.1, anything connected to the router will not see anything 'behind'(like the modem). You'd need to restructure your network settings a bit to achieve your goal of maintaining the modem wirelessly. You want your router to stop routing and act as an access point instead.

 

[chraso]

Yes, router's WAN port is getting public IP. The wireless modem itself has diff dynamic IP from ISP i think.
My network setup is simple as 123.
Wireless Modem > Router > Switches.
though its IPoE as I bought a static IP, I wonder y the modem has diff IP?
And is there any way we can browse a subnet? (or say upnet) cos I know the exact IP.

Also it was my ISP's gateway which was having problem which I found via this trick by Geofrancis http://

 

[anotherdrew]

If your router's WAN port is getting a public IP, then the modem is probably in passthrough mode. In passthrough mode, the modem does not have an IP address (well, maybe, but not one can access without being directly connected .. if it did have a routable address, then it would have to be a public address and with the shortage of IPv4 addresses I don't see your ISP giving you 2 just so you can talk to the modem). It just takes the data from your ISP, converts the data from your format (Ethernet) to your ISP format and vica versa (not much conversion since your IPoE ... maybe fiber to Ethernet or something).

So, accessing your modem from inside your network would be impossible with your current setup. How could you possibly do it? A 2nd connection. Your modem probably still has a private IP address. If you were to add a hub (not a switch) between your modem and router and then run a cable (or Wifi) to a 2nd Ethernet adapter you could access the modem. The 2nd Ethernet adapter would have to be manually configured. Security wise this should be ok because the line that bypasses your router (normally a bad idea) should not carry any of your internet traffic. There are a lot of assumptions here and I can't promise that after you spend all the money for a 2nd connection that it would even work. I think the best thing for now would if you had a laptop and could walk over to the modem and connect to it directly ... but maybe it's not an issue anymore since you found your lag issue.

 

[chraso]

If your router's WAN port is getting a public IP, then the modem is probably in passthrough mode. In passthrough mode, the modem does not have an IP address (well, maybe, but not one can access without being directly connected .. if it did have a routable address, then it would have to be a public address and with the shortage of IPv4 addresses I don't see your ISP giving you 2 just so you can talk to the modem). It just takes the data from your ISP, converts the data from your format (Ethernet) to your ISP format and vica versa (not much conversion since your IPoE ... maybe fiber to Ethernet or something).

So, accessing your modem from inside your network would be impossible with your current setup. How could you possibly do it? A 2nd connection. Your modem probably still has a private IP address. If you were to add a hub (not a switch) between your modem and router and then run a cable (or Wifi) to a 2nd Ethernet adapter you could access the modem. The 2nd Ethernet adapter would have to be manually configured. Security wise this should be ok because the line that bypasses your router (normally a bad idea) should not carry any of your internet traffic. There are a lot of assumptions here and I can't promise that after you spend all the money for a 2nd connection that it would even work. I think the best thing for now would if you had a laptop and could walk over to the modem and connect to it directly ... but maybe it's not an issue anymore since you found your lag issue.

Thnks anotherdrew for ur replies.

I did found the problem, but the ISP is declining to give me the username and password to login to modem page.
I think they don't want to see me their settings. My ping issue is resolved for now but still 1 problem is there.
I'm not getting the full 8MBPS speed.
And I'm pretty sure that its their gateway that has bottleneck.
When I tracert to 8.8.8.8(public google dns), its displays 20 hops, of which 11 is * valued.

 

[anotherdrew]

ISPs promise up to a certain speed ... if your paying for 8 Mbps, then hopefully your getting close (7?), but you may never get the full 8.

It is normal to get some hops on a tracert that are all stars.