No IP address? Doh

No IP address? Doh
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Subject Author Date
No IP address? Doh Edward 07-05-2007
Posted by Bill M. on July 7, 2007, 5:20 pm
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wrote:

>> wrote:
>>
>>
>>
>>
>>
>> >Linksys router and linksys cable modem. Cable modem is whre the
>> >service enters the house, from there it is cat5 up to my office area
>> >where the WRT54G takes over.
>> >I wasn't getting an IP, so I connected my PC right up to the cable
>> >modem - eliminating the modem, still didn't get an IP.
>> >Called Comcrap they guided me through some bullshit - blah blah -
>> >nothing I hadn't tried before after all; I'm an IT guy.
>> >Didn't work. She puts me on hold to see if there is a problemin my
>> >area - viola. I have an IP.
>> >I told her I'm fixed and say thanks. I'm always nice to those people,
>> >no need to people others' lives difficult.
>> >30 minutes later - same thing. no IP. I shut everything down - cable
>> >modem and router - unplugged.
>> >I mow the lawn and take a shower (45 minutes).
>> >I come back, plug in the modem, plug in my router - no IP.
>> >I make something to eat. A hoagie. No mayo.
>> >I now have an IP.
>> >So did Comcast simply want me to make a hoagie?
>>
>> What's the length of your DHCP lease? Maybe they're working on
>> splitting the network in your area, although that should usually be a
>> lot more seamless than it's apparently been for you.
>>
>> --
>> Bill- Hide quoted text -
>>
>> - Show quoted text -
>
>I connected the damn PC right up to theinternet.
>The lease is 30 days.
>I am out of town, so as soon as I left its fucked. The people living
>with me, tried resetting the modem/router, waiting 45 minutes -
>NOTHING.
>Comshit blames the router; despite the fact there has been no change
>to the god damn thing.

Are you saying that your DHCP lease is 30 days but at some point
before that period you lose connectivity and can't reacquire an IP
address?

It might be time to start at the beginning. What are the lights on the
cable modem doing when you lose connectivity? When you can access it,
what do the modem's signal levels look like? Do they fluctuate over
time, such as time of day or from one day to the next?

--
Bill

Pure Networks
Posted by Edward on July 7, 2007, 9:00 pm
If you were  Registered and logged in, you could reply and use other advanced thread options
> wrote:
>
>
>
>
>
> >> wrote:
>
> >> >Linksys router and linksys cable modem. Cable modem is whre the
> >> >service enters the house, from there it is cat5 up to my office area
> >> >where the WRT54G takes over.
> >> >I wasn't getting an IP, so I connected my PC right up to the cable
> >> >modem - eliminating the modem, still didn't get an IP.
> >> >Called Comcrap they guided me through some bullshit - blah blah -
> >> >nothing I hadn't tried before after all; I'm an IT guy.
> >> >Didn't work. She puts me on hold to see if there is a problemin my
> >> >area - viola. I have an IP.
> >> >I told her I'm fixed and say thanks. I'm always nice to those people,
> >> >no need to people others' lives difficult.
> >> >30 minutes later - same thing. no IP. I shut everything down - cable
> >> >modem and router - unplugged.
> >> >I mow the lawn and take a shower (45 minutes).
> >> >I come back, plug in the modem, plug in my router - no IP.
> >> >I make something to eat. A hoagie. No mayo.
> >> >I now have an IP.
> >> >So did Comcast simply want me to make a hoagie?
>
> >> What's the length of your DHCP lease? Maybe they're working on
> >> splitting the network in your area, although that should usually be a
> >> lot more seamless than it's apparently been for you.
>
> >> --
> >> Bill- Hide quoted text -
>
> >> - Show quoted text -
>
> >I connected the damn PC right up to theinternet.
> >The lease is 30 days.
> >I am out of town, so as soon as I left its fucked. The people living
> >with me, tried resetting the modem/router, waiting 45 minutes -
> >NOTHING.
> >Comshit blames the router; despite the fact there has been no change
> >to the god damn thing.
>
> Are you saying that your DHCP lease is 30 days but at some point
> before that period you lose connectivity and can't reacquire an IP
> address?

correct.


>
> It might be time to start at the beginning. What are the lights on the
> cable modem doing when you lose connectivity? When you can access it,
> what do the modem's signal levels look like? Do they fluctuate over
> time, such as time of day or from one day to the next?
>
> --

The lights on the cable modem are as follows:
US: lit
DS: lit.
ethernet: blinking

I'll get the signal levels when I get back home.
Every month this happens.Rain or shine.


Posted by Bill M. on July 8, 2007, 1:44 am
If you were  Registered and logged in, you could reply and use other advanced thread options
wrote:

>> wrote:
>>
>> It might be time to start at the beginning. What are the lights on the
>> cable modem doing when you lose connectivity? When you can access it,
>> what do the modem's signal levels look like? Do they fluctuate over
>> time, such as time of day or from one day to the next?
>>
>> --
>
>The lights on the cable modem are as follows:
>US: lit
>DS: lit.
>ethernet: blinking
>
>I'll get the signal levels when I get back home.
>Every month this happens.Rain or shine.

Only 3 lights on the modem? What make/model is it? Does it even have a
web server available?

--
Bill

Posted by Edward on July 8, 2007, 11:04 pm
If you were  Registered and logged in, you could reply and use other advanced thread options
> wrote:
>
>
>
>
>
> >> wrote:
>
> >> It might be time to start at the beginning. What are the lights on the
> >> cable modem doing when you lose connectivity? When you can access it,
> >> what do the modem's signal levels look like? Do they fluctuate over
> >> time, such as time of day or from one day to the next?
>
> >> --
>
> >The lights on the cable modem are as follows:
> >US: lit
> >DS: lit.
> >ethernet: blinking
>
> >I'll get the signal levels when I get back home.
> >Every month this happens.Rain or shine.
>
> Only 3 lights on the modem? What make/model is it? Does it even have a
> web server available?
>
> --
> Bill- Hide quoted text -
>
> - Show quoted text -

I came home to see none of the lights were on, except power.
I reset it and now I have everything.

http://img509.imageshack.us/my.php?image=dsc00774zj0.jpg

Here is the info from the cable modem's webserver

Acquire Downstream Channel 723000000 Hz Locked
Connectivity State Operational Operational
Boot State OK Operational
Security Enabled BPI+

--------------------------------------------------------------------------------


Downstream Channel

Lock Status Operational
Modulation 256QAM
Channel ID 0
Provisioned Rate 6600 kbps
Symbol Rate 5360.537 Ksym/sec
Downstream Power 2.9 dBmV
SNR 34.4 dB

--------------------------------------------------------------------------------


Upstream Channel

Lock Status Operational
Modulation 16QAM
Channel ID 3
Provisioned Rate 384 kbps
Symbol Rate 2560 Ksym/sec
Upstream Power 35.0 dBmV

Time Priority Description
2007-07-08 21:50:28 critical Started Unicast Maintenance Ranging
- No Response received - T3 time-out
2007-07-08 21:50:15 critical SYNC Timing Synchronization failure
- Failed to receive MAC SYNC frame within time-out period
2007-07-07 07:22:51 critical SYNC Timing Synchronization failure
- Failed to acquire QAM/QPSK symbol timing
2007-07-07 07:22:46 critical No UCD's Received - Timeout
2007-07-07 07:19:38 critical SYNC Timing Synchronization failure
- Failed to acquire FEC framing
2007-07-07 07:19:37 critical SYNC Timing Synchronization failure
- Failed to receive MAC SYNC frame within time-out period
2007-07-07 07:19:34 critical No Ranging Response received - T3
time-out
2007-07-07 07:19:18 critical Received Response to Broadcast
Maintenance Request, But no Unicast Maintenance opportunities received
- T4 timeout
2007-07-07 07:19:16 critical SYNC Timing Synchronization failure
- Failed to receive MAC SYNC frame within time-out period
2007-07-07 07:17:45 critical Started Unicast Maintenance Ranging
- No Response received - T3 time-out
2007-07-07 06:01:08 critical SYNC Timing Synchronization failure
- Failed to receive MAC SYNC frame within time-out period
2007-07-07 05:49:07 critical Started Unicast Maintenance Ranging
- No Response received - T3 time-out
2007-07-06 16:41:42 critical SYNC Timing Synchronization failure
- Failed to receive MAC SYNC frame within time-out period
2007-07-06 16:40:43 critical Started Unicast Maintenance Ranging
- No Response received - T3 time-out
2007-07-06 16:33:45 critical SYNC Timing Synchronization failure
- Failed to receive MAC SYNC frame within time-out period
2007-07-06 16:33:29 critical Started Unicast Maintenance Ranging
- No Response received - T3 time-out
2007-07-06 16:33:25 critical SYNC Timing Synchronization failure
- Failed to receive MAC SYNC frame within time-out period
2007-07-06 16:33:04 critical Started Unicast Maintenance Ranging
- No Response received - T3 time-out
2007-07-06 16:33:01 critical SYNC Timing Synchronization failure
- Failed to receive MAC SYNC frame within time-out period
2007-07-06 14:29:26 critical Started Unicast Maintenance Ranging
- No Response received - T3 time-out
2007-07-06 14:24:26 critical SYNC Timing Synchronization failure
- Failed to receive MAC SYNC frame within time-out period
2007-07-06 13:24:54 critical Started Unicast Maintenance Ranging
- No Response received - T3 time-out
2007-07-06 10:55:00 critical SYNC Timing Synchronization failure
- Failed to receive MAC SYNC frame within time-out period
2007-07-06 10:54:08 critical Started Unicast Maintenance Ranging
- No Response received - T3 time-out
2007-07-06 10:38:56 critical SYNC Timing Synchronization failure
- Failed to receive MAC SYNC frame within time-out period
2007-07-06 10:38:53 critical Started Unicast Maintenance Ranging
- No Response received - T3 time-out
2007-07-06 10:10:39 critical SYNC Timing Synchronization failure
- Failed to receive MAC SYNC frame within time-out period
2007-07-06 10:10:13 critical Started Unicast Maintenance Ranging
- No Response received - T3 time-out
2007-07-06 10:09:52 critical SYNC Timing Synchronization failure
- Failed to receive MAC SYNC frame within time-out period
2007-07-06 09:59:57 critical Started Unicast Maintenance Ranging
- No Response received - T3 time-out
2007-07-06 08:34:08 critical Init RANGING Critical Ranging
Request Retries exhausted
2007-07-06 08:34:08 critical No Ranging Response received - T3
time-out


Posted by Bill M. on July 9, 2007, 2:04 am
If you were  Registered and logged in, you could reply and use other advanced thread options
wrote:

>> wrote:
>>
>> Only 3 lights on the modem? What make/model is it? Does it even have a
>> web server available?
>>
>> --
>> Bill- Hide quoted text -
>>
>> - Show quoted text -
>
>I came home to see none of the lights were on, except power.
>I reset it and now I have everything.
>
>http://img509.imageshack.us/my.php?image=dsc00774zj0.jpg

Oh, it's a Linksys!

>Here is the info from the cable modem's webserver
>
> Acquire Downstream Channel 723000000 Hz Locked
> Connectivity State Operational Operational
> Boot State OK Operational
> Security Enabled BPI+
>
>--------------------------------------------------------------------------------
>
>
>Downstream Channel
>
> Lock Status Operational
> Modulation 256QAM
> Channel ID 0
> Provisioned Rate 6600 kbps
> Symbol Rate 5360.537 Ksym/sec
> Downstream Power 2.9 dBmV
> SNR 34.4 dB
>
>--------------------------------------------------------------------------------
>
>
>Upstream Channel
>
> Lock Status Operational
> Modulation 16QAM
> Channel ID 3
> Provisioned Rate 384 kbps
> Symbol Rate 2560 Ksym/sec
> Upstream Power 35.0 dBmV

Downstream power and SNR look acceptable to me. Upstream power looks
good, too.

>Time Priority Description
> 2007-07-08 21:50:28 critical Started Unicast Maintenance Ranging
>- No Response received - T3 time-out
> 2007-07-08 21:50:15 critical SYNC Timing Synchronization failure
<snip>

The log entries, as bad as they look, seem to be pretty common, at
least in the modems that I've come across.

I'm not seeing anything obviously wrong so far, except that you said
that ALL of the lights were off when you got home, even the Ethernet
light. I could be wrong, but it seems like the Ethernet side of the
modem should stay lit as long as something is connected to it.

It might be tempting to go down and pick up a (rental) cable modem
from your local TWC office to use as a troubleshooting aid. If it
doesn't help, just return it.

--
Bill

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other useful resources:
The Federal Communications Commission (FCC)
Telecommunications Industry Association
Electronic and Software Security Products and Services
International Telecommunication Union

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