Prev: Net Neutrality -- the wolves are circling
Next: SpeedTouch 585(i) v6: Allow New Devices?
From: Mike Easter on 16 Apr 2010 21:41
laredotornado wrote:
> Mike Easter
>> laredotornadowrote:
>>> I have a little bit of an older setup -- Win XP and a D-Link 802.11g
>>> wirelessrouter, with cable Internet being provided by a company named
>>> RCN. Everything works great when I am connected directly to the
>>> modem. However, when I connect through the router, despite the fact
>>> my LAN andwirelessconnection icons tell me I'm connected, I
>>> repeatedly get errors when trying to resolve hosts, like google.com.
>>> I have restarted everything (modem, router, PC). Do you have any
>>> additional ideas for troubleshooting the setup?

>> You also didn't say whether or not you could access the dlink's
>> configuration page at 192.168.0.1 and then login with admin password
>> blank - or your password configuration.

> To simplify, things, I disabled my wireless connection to see if I
> could get anything from the router. Per Mike's points, here is what I
> found out:
>
> I can access the router and log in to the admin page.

Good.


> IP Address. . . . . . . . . . . . : 192.168.0.100

> One interesting thing, when I unplug the modem (Arris:, Model#: TM402G/
> 110), the power lights are all still on. Not sure if it charges
> itself and retains power for a while or what, but I wanted to bring it
> to the group's attention for your input and feedback, which was much
> appreciated,

Ah, so.

The Arris TM402G is a modem for cable internet and VoIP telephony which
has a battery, but according to my information, most of the lights
should be off when the AC power plug is pulled.

The docs I have say that with AC pulled, the power light flashes, the
DS, US, Online, and Link lights are off, the telephone lights are
unchanged, and the battery light is on if the battery is good. DS/US
down/upstreams.

With that battery in there, the network building from the ground up is a
little different because you would need to use the reset button in the
pin hole in the back of the unit to reset the modem.

So, the 'full' network rebuild would be powerdown everything but the
modem, which modem is reset by using a pointy thing (I use a thick
straightened paper clip) into the reset button hole. Manuals advise
nonmetallic, but I don't have anything around here like that, (with the
possible exception of a wooden pointy shishkebab thing).

Then, I think the sequence after reset would be everything flashing,
then the powerlight on, then the DS flashing and then acquisition on,
then the US flashing and then acquisition on, then the online flashing
and acquisition on. I'm not sure where the telephony light sequence is
in that, but our focus is on the internet.

So, now you have good cable lights and it internally has an IP address
and it is looking for something to give an address to.

So you plugin/powerup the router. You also watch its lights, because
these lighting sequences are worthwhile for troubleshooting. I don't
have your router's manual in front of me right now, but you should

Now you are powering up the computer which you have ethernetted to the
router. You said that you could see the admin page, so you can see the
WAN IP address in there and you can make sure that you are configured
the way you want to be about your nameservice and your wireless security.

If resetting the modem and the router solved your problems, fine. If
not report any problems which you experience in this ethernet mode.


--
Mike Easter
From: Bob K on 16 Apr 2010 21:42
On 4/16/2010 7:37 PM, laredotornado wrote:
> On Apr 15, 10:19 pm, Mike Easter<Mi...(a)ster.invalid> wrote:
>> laredotornadowrote:
>>> I have a little bit of an older setup -- Win XP and a D-Link 802.11g
>>> wirelessrouter, with cable Internet being provided by a company named
>>> RCN. Everything works great when I am connected directly to the
>>> modem. However, when I connect through the router, despite the fact
>>> my LAN andwirelessconnection icons tell me I'm connected, I
>>> repeatedly get errors when trying to resolve hosts, like google.com.
>>
>>> I have restarted everything (modem, router, PC). Do you have any
>>> additional ideas for troubleshooting the setup?
>>
>> By 'restarted everything' I assume that means: physically connect by
>> ethernet all of the following: modem, router, PC in a shutdown
>> condition. Then powerup sequentially modem, watching lights, router,
>> watching lights, and then PC assessing ipconfig on your windows machine.
>>
>> Nothing related to troubleshooting should be done by wifi at this time.
>>
>> You didn't say what ipconfig said, whether it got a translated address
>> from the router ie 192.168.x.xx. That is, run/ cmd/ ipconfig
>>
>> You also didn't say whether or not you could access the dlink's
>> configuration page at 192.168.0.1 and then login with admin password
>> blank - or your password configuration.
>>
>> That is; from a troubleshooting perspective, you need to poweron the
>> network in sequential order, then you need to be getting a translated
>> address from the router, then you need to be able to access the router's
>> configuration page at its address and login.
>>
>> Then you know you are hooked up to the router because it gave you an
>> address. Thewirelessbusiness should only follow good ethernet
>> connectivity. Your troubleshooting info here has not described the good
>> vs the bad parts yet.
>>
>> Only after you know you have a translated address from the router can
>> you look at the router's webpage and find if it is connected to the
>> internet with a WAN IP address from the modem.
>>
>> --
>> Mike Easter
>
> To simplify, things, I disabled my wireless connection to see if I
> could get anything from the router. Per Mike's points, here is what I
> found out:
>
> I can access the router and log in to the admin page.
>
> "ipconfig" generates this ...
>
> C:\Documents and Settings\D Alvarado>ipconfig
>
> Windows IP Configuration
>
>
> Ethernet adapter Local Area Connection:
>
> Connection-specific DNS Suffix . :
> IP Address. . . . . . . . . . . . : 192.168.0.100
> Subnet Mask . . . . . . . . . . . : 255.255.255.0
> Default Gateway . . . . . . . . . : 192.168.0.1
>
> Ethernet adapter Wireless Network Connection:
>
> Media State . . . . . . . . . . . : Media disconnected
>
>
> One interesting thing, when I unplug the modem (Arris:, Model#: TM402G/
> 110), the power lights are all still on. Not sure if it charges
> itself and retains power for a while or what, but I wanted to bring it
> to the group's attention for your input and feedback, which was much
> appreciated, - Dave

The TM402G is a VoIP gateway, and from what I see on it, it has an
internal battery that will keep it going for up to 8 hours during a
power shortage.

Your ipconfig output looks good to me. It would be interesting tho to
know what DNS servers your computer is picking up. If those are missing
or invalid, then you would get errors trying to resolve a URL like
Google.com. I get an IP address for Google.com here of 74.125.65.106.
If you can ping (or tracert) to that IP, but not to Google.com -- that
would further indicate DNS server problems.

If your modem (the TM402G) is doing network translation, and the router
is also (probably) that can be bad news. But, you said you can log into
the router -- does it tell you in it's status page (or wherever) what it
is picking up from the modem? Does it indicate it has DNS servers to
hand out? And, I assume it is set up to act as a DHCP server.

If your computer is not getting DNS servers supplied, you can tell it to
use specific one. Some public servers you can use are 8.8.8.8 and
4.2.2.4, or you can google and find others. If the router isn't getting
the DNS servers to hand out, you could tell it to use those.

If I give the command
ipconfig /all
I will see what my computer is using for a DNS server, but in my case,
it simply is pointing to my router! So you would need to make sure your
router has DNS server addresses (either picked up from your ISP, or
supplied by you) -- or you need to add them in the TCP/IP properties in XP.

Did I confuse you, or just myself :-)

....Bob


From: Mike Easter on 16 Apr 2010 21:51
Mike Easter wrote:

> If resetting the modem and the router solved your problems, fine. If
> not report any problems which you experience in this ethernet mode.

Also the modelno of the D-Link router.


--
Mike Easter
From: laredotornado on 17 Apr 2010 15:09
On Apr 16, 8:51 pm, Mike Easter <Mi...(a)ster.invalid> wrote:
> Mike Easter wrote:
> > If resetting the modem and the router solved your problems, fine.  If
> > not report any problems which you experience in this ethernet mode.
>
> Also the modelno of the D-Link router.
>
> --
> Mike Easter

K, well everything is up and running now, as evidenced by this post.
I followed the reset sequence outlined by Mike and now I'm back
online. Interestingly, Bob's point about the DNS servers may have
also been an issue b/c when I was connected directly to the modem
earlier today, DNS resolution was failing. I changed my DNS server
and solved that problem, though.

Thanks to all!

First  |  Prev  | 
Pages: 1 2
Prev: Net Neutrality -- the wolves are circling
Next: SpeedTouch 585(i) v6: Allow New Devices?