nanog mailing list archives

Re: Beta Starlink with a slight tree obstruction vs degraded DOCSIS3 last mile


From: Eric Kuhnke <eric.kuhnke () gmail com>
Date: Wed, 30 Jun 2021 14:30:36 -0400

Although I did not provide screenshots to the 40 other widely varied
destinations that smokeping system is set up to poll, all of them show
similar 2-3% loss results as to the voip.ms server in Seattle. Additionally
TCP is also dropping packets on the floor. And of course anything UDP is
affected to the point that it's noticeable in voice/video.

This is not a case of the cable ISP introducing some ICMP rate limiting
packet eater but a general degradation for everything.

On Wed, Jun 30, 2021 at 9:58 AM Josh Luthman <josh () imaginenetworksllc com>
wrote:

Have you thought about doing a TCP test?  Maybe an HTTP check to a
website?  That would be better than ICMP, I think, since it would be more
user like.

Josh Luthman
24/7 Help Desk: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373


On Tue, Jun 29, 2021 at 9:02 PM Eric Kuhnke <eric.kuhnke () gmail com> wrote:

The local cable last mile operator broke something locally, or something
degraded (water ingress, bad connectors, who knows) and can't get their act
together sufficiently to dispatch a field tech and fix it.

On Mon, Jun 28, 2021, 11:03 AM Josh Luthman <josh () imaginenetworksllc com>
wrote:

What happened on June 20/21?  Looks like someone broke something on your
cable link or perhaps an ICMP rate limiting was introduced.

Josh Luthman
24/7 Help Desk: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373


On Mon, Jun 28, 2021 at 10:45 AM Matt Hoppes <
mattlists () rivervalleyinternet net> wrote:

I don't know how you can be embarrassed when you have a pretty solid
30ms ping constantly, and Starlink has jitter all over the place and
spikes as high as 280ms.

I'll take the DOCSIS3 system....

On 6/25/21 8:49 PM, Eric Kuhnke wrote:
I thought I would post an interesting comparison between a degraded
DOCSIS3 link, of a carrier that shall remain nameless to avoid
embarrassing anybody, and a starlink CPE with a slight 1/12th tree
obstruction in a portion of its view.

First two screenshots are the docsis3, to its gateway and to a very
reliable hosted asterisk system in Seattle.

Second two screenshots are starlink, also to its gateway and to the
same
destination.

https://imgur.com/a/OQ5wyDr




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