[geeks] Q: Cable modem failing?

[francini at mac.com]

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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