Random disconnections from a Terayon TJ715x cable modem?

Random disconnections from a Terayon TJ715x cable modem?
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Subject Author Date
Random disconnections from a Terayon TJ715x cable modem? Ant 09-29-2008
Posted by Ant on September 29, 2008, 7:08 pm
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Hi.

Since beginning of this month, I have had random disconnections that
occur twice/trice (seems like every 10-14 hours? There are no exact
times and not temperature related in the room [can happen when cool like
70F degrees and hot like 85F degrees) a day ever. I seems to have
narrowed it down to the cable modem when I did nonstop pings (one per
second) a few times. Example of one that occurred recently:

...
64 bytes from 192.168.100.1: icmp_seq=837 ttl=59 time=4.61 ms
From 192.168.0.1 icmp_seq=838 Destination Host Unreachable
From 192.168.0.1 icmp_seq=839 Destination Host Unreachable
From 192.168.0.1 icmp_seq=840 Destination Host Unreachable
From 192.168.0.1 icmp_seq=841 Destination Host Unreachable
64 bytes from 192.168.100.1: icmp_seq=842 ttl=59 time=5.56 ms
...

I also pinged from outside to my IP address and had a couple packet
losses. I tried pinging my old Netgear RT311 router, rebooting all
hardwares, changing network cables, etc. None of those fixed/decrease
the problem. I also checked my Terayon TJ715x cable modem's logs after
these random disconnections, and none of them show reboots from them.

Is my cable modem going bad? Speeds are fast for the normal package
user. It is just annoying random disconnects right now.

Thank you in advance. :)
--
"If I want to be a robber, I rob the king's treasury. If I want to be a
hunter, I hunt the rhino. What is the use of robbing beggars and hunting
ants? So if you want to love, love God." --Swami Vivekananda
/\___/\
/ /\ /\ \ Ant @ http://antfarm.home.dhs.org (Personal Web Site)
| |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
\ _ / Please remove ANT if replying by e-mail.
( )

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Posted by 1PW on September 29, 2008, 8:25 pm
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On 09/29/2008 04:08 PM, Ant sent:
> Hi.
>
> Since beginning of this month, I have had random disconnections that
> occur twice/trice (seems like every 10-14 hours? There are no exact
> times and not temperature related in the room [can happen when cool like
> 70F degrees and hot like 85F degrees) a day ever. I seems to have
> narrowed it down to the cable modem when I did nonstop pings (one per
> second) a few times. Example of one that occurred recently:
>
> ...
> 64 bytes from 192.168.100.1: icmp_seq=837 ttl=59 time=4.61 ms
> From 192.168.0.1 icmp_seq=838 Destination Host Unreachable
> From 192.168.0.1 icmp_seq=839 Destination Host Unreachable
> From 192.168.0.1 icmp_seq=840 Destination Host Unreachable
> From 192.168.0.1 icmp_seq=841 Destination Host Unreachable
> 64 bytes from 192.168.100.1: icmp_seq=842 ttl=59 time=5.56 ms
> ...
>
> I also pinged from outside to my IP address and had a couple packet
> losses. I tried pinging my old Netgear RT311 router, rebooting all
> hardwares, changing network cables, etc. None of those fixed/decrease
> the problem. I also checked my Terayon TJ715x cable modem's logs after
> these random disconnections, and none of them show reboots from them.
>
> Is my cable modem going bad? Speeds are fast for the normal package
> user. It is just annoying random disconnects right now.
>
> Thank you in advance. :)

Hello:

Can you monitor your cable modem's receive power level and receive
signal-to-noise ratio for awhile? Also, just after you've received
a disconnect would be good too.

Before you monitor those, perhaps you could tell us what those
instantaneous values are now.

Let us know what you find.

Best wishes to you.

--
1PW

@?6A62?FEH9:DE=6o2@=]4@> [r4o7t]

Posted by $Bill on September 29, 2008, 9:01 pm
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1PW wrote:
>
> Can you monitor your cable modem's receive power level and receive
> signal-to-noise ratio for awhile? Also, just after you've received
> a disconnect would be good too.
>
> Before you monitor those, perhaps you could tell us what those
> instantaneous values are now.
>
> Let us know what you find.

If you have Perl, I have a script that can read out the web pages on your
TJ715X - let me know where to email it if you like. If you don't already
have the password, it's: icu4at!

http://192.168.100.1/mainPage
http://192.168.100.1/diagnostics_page.html <enter password here>

Posted by Ant on September 30, 2008, 10:48 am
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On 9/29/2008 6:01 PM PT, $Bill typed:

> 1PW wrote:
>>
>> Can you monitor your cable modem's receive power level and receive
>> signal-to-noise ratio for awhile? Also, just after you've received
>> a disconnect would be good too.
>>
>> Before you monitor those, perhaps you could tell us what those
>> instantaneous values are now.
>>
>> Let us know what you find.
>
> If you have Perl, I have a script that can read out the web pages on your
> TJ715X - let me know where to email it if you like. If you don't already
> have the password, it's: icu4at!
>
> http://192.168.100.1/mainPage
> http://192.168.100.1/diagnostics_page.html <enter password here>

Sure, I have Linux. Can you please kindly post it in http://pastie.org/
or somewhere? However, what happens if my cable modem disconnects when
the event happen? I won't be able to get the reading during the quick
disconnections. :(
--
"Be thine enemy an ant, see in him an elephant." --Turkish Proverb
/\___/\
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| |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
\ _ / Remove ANT from e-mail address: philpi@earthlink.netANT
( ) or ANTant@zimage.com
Ant is currently not listening to any songs on his home computer.

Posted by Ant on September 30, 2008, 8:15 pm
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> > Can you monitor your cable modem's receive power level and receive
> > signal-to-noise ratio for awhile? Also, just after you've received
> >