[CentOS] Spotty internet connection

[Steve Clark]

On 02/02/2017 10:12 PM, TE Dukes wrote:
>
>> -----Original Message-----
>> From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of Matt
>> Garman
>> Sent: Thursday, February 2, 2017 8:52 PM
>> To: CentOS mailing list
>> Subject: Re: [CentOS] Spotty internet connection
>>
>> On Thu, Feb 2, 2017 at 7:13 PM, TE Dukes <tdukes at palmettoshopper.com>
>> wrote:
>>> Lately I have been getting slow  and partial page loads, server not
>>> found, server timed out, etc.. Get knocked off ssh when accessing my
>>> home server from work, etc. Its not the work connection because I
>>> don't have problems accessing other sites, just here at home and my home
>> server.
>>> Is there any kind of utility to check for failing hardware?
>> I have the exact same problems from time to time via Comcast.  Mine comes
>> and goes, and lately it hasn't been too bad.  But when it comes, it's down
> for
>> very small amounts of time, maybe 30-90 seconds, which is just long enough
>> to be annoying, and make the service unusable.
>>
>> When it was really bad (intermittent dropouts as described above, almost
>> every night during prime time, usually for several hours at a
>> time) I wrote a program to do constant pings to several servers at once.
> If
>> you're interested, I'll see if I can find that script.  But, conceptually,
> it ran
>> concurrent pings to several sites, and kept some stats on drops longer
> than
>> some threshold.  Some tips on a program like this: use IP addresses,
> rather
>> than hostnames, because ultimately using a hostname implicitly does a DNS
>> lookup, which likely requires Internet service to work.  I also did
> several
>> servers at once, so I could prove it wasn't just the one site I was
> pinging.
>> Included in the list of servers was also the nexthop device beyond my
> house
>> (presumably Comcast's own router).  Use traceroute to figure out network
>> paths.
>>
>> After running this for a while---before I called them with the
> evidence---the
>> problem magically cleared up, and since then it's been infrequent enough
>> that I haven't felt the need to fire up the script again.  When it comes
> to
>> residential Internet, I am quite cynical towards monopoly ISPs like
> Comcast...
>> so maybe they saw the constant pings and knew I was building a solid case
>> and fixed the problem.  Or maybe enough people in my area complained of
>> similar problems and they actually felt uncharacteristically caring for a
> second.
>> I haven't been there in a while, but in the past, I've gotten a lot of
> utility out
>> of the DSLReports Forums[1].  There are private forums that will put you
> in
>> direct contact with technical people at your ISP.
>> It can sometimes be a good way to side-step the general customer service
>> hotline and get in touch with an actual engineer rather than a script
> reader.
>> Maybe not, but worst-case you're only out some time.
>> Also, you might post this same question to one of the public forums over
>> there, as there seems to be lots of knowledgeable/helpful people hanging
>> out there.  (Despite the name, it's not only about DSL, but consumer ISPs
> in
>> general.)
>>
>> [1] http://www.dslreports.com/forums/all
>>
> Thanks for the info.
>
> I've seen that site before so I might check it out.
>
> My router/modem has a log. Its loaded with errors I can't interpret. I
> googled a portion of it and landed on TWC forums.
>
> Missing BP Configuration Setting TLV
>
> http://forums.timewarnercable.com/t5/Connectivity/Predictable-disconnects/td
> -p/1016
>
> Didn't see much of an answer.
>
> Hopefully it's a temporary thing as it just started.  I don't think it's a
> problem on my end, maybe, but doubt it. I'll give it another day or so.
>
> Thanks!!
>
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Hi,

What kind of cable modem/gateway do you have? Just wondering because my 12 year old Toshiba finally
crapped out and Spectrum gave me a new one. Its and ARRIS TG1682G and it only gives me a private IP not
like the old one which gave me the public IP so I can't ssh to home from work anymore, so I am wondering
how you do it?

Thanks,
Steve

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