[geeks] Q: Cable modem failing?

[francini at mac.com]

If the signal strength reads low you may need to have them come out and replace any outside-the-house connectors and/or splitters. They do go bad after a while.

If the signal strength reads good -- rain or no rain -- it's likely the cable modem beginning to fail. I had the same problem with an older DOCSIS 2.0 Motorola modem; it required a therapeutic reboot every few days towards the end of its life. Replaced it after about 6-7 years. Besides, if you replace it with a DOCSIS 3.0, you'll be ready in case you decide to go to a higher speed tier that can't be delivered through a 10/100 Mbps port.

j


On 27 Dec 2012, at 14:02 , Lionel Peterson <lionel4287 at gmail.com> wrote:

> Thanks to both of you - I'll check the signal strength a few times and see
> what I can figure out.
> 
> We have had a fair amount if rain these past few days... It would be nice if
> that was the issue (assuming Comcast will be willing to juice up the signal if
> needed)...
> 
> Lionel
> 
> On Dec 27, 2012, at 1:39 PM, francini at mac.com wrote:
> 
>> The address is 192.168.100.1.
>> 
>> j
>> 
>> On 27 Dec 2012, at 12:33 , Andrew Jones <andrew at jones.ec> wrote:
>> 
>>> On 12/27/2012 11:56 AM, Lionel Peterson wrote:
>>>> Hello all,
>>>> 
>>>> I have a plain, old, Motorola Cable modem (SB5101, Docsis 2.0), and it
> seems
>>>> to have started having problems.
>>>> 
>>>> This is a 7 year-old device, and what I am seeing is that Internet speeds
> will
>>>> slowly degrade to the point it is unusable, then rebooting the cable
> modem
>>>> sets things right for 24-48 hours it seems.
>>> 
>>> I had similar problems when my signal quality had been degraded by rain
> damage to cabling. When the signal was good, the modem would correctly
> negotiate a high speed, but when the signal was bad, it would negotiate down
> and stay there.  When rebooted during a "good" spell, it would briefly be
> faster.
>>> 
>>> ISTR that all Motorola modems have a user-reachable diagnostic page on
> 192.168.something, and that will show you the SNR at any given time.
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