nanog mailing list archives

Re: Observations of an Internet Middleman (Level3) (was: RIP


From: Scott Helms <khelms () zcorum com>
Date: Fri, 16 May 2014 13:39:43 -0400

Blake,

You're absolutely correct.  The world adapts to the reality that we find
ourselves in via normal market mechanics.  The problem with proposing that
connectivity for residential customers should be more symmetrical is that
its expensive, which is why we as operators didn't roll it out that way to
start.  We also don't see consumer demand for symmetrical connections and
with the decline in peer to peer file sharing we've actually seen a
decrease the ratio of used upstream bandwidth (though not a decrease in
absolute terms).

I would like to deliver symmetrical bandwidth to all consumers just so
those few customers who need it today would have lower bills but trying to
justify that to our CFO without being able to point to an increase in
revenue either because of more revenue per sub or more subs is a very tough
task.  I don't believe my situation is uncommon.


Scott Helms
Vice President of Technology
ZCorum
(678) 507-5000
--------------------------------
http://twitter.com/kscotthelms
--------------------------------


On Fri, May 16, 2014 at 1:20 PM, Blake Hudson <blake () ispn net> wrote:

Thanks for the insight Scott. I appreciate the experience and point of
view you're adding to this discussion (not just the responses to me). While
I might be playing the devil's advocate here a bit, I think one could argue
each of the points you've made below.

I do feel that general usage patterns are a reflection of the technologies
that have traditionally been available to consumers. New uses and
applications would be available to overcome hurdles if the technologies had
developed to be symmetrical. I'm not saying that the asymmetrical choice
was a bad one, but it was not without consequences. If residential ISPs
sell asymmetric connections for decades, how can the ISP expect that
application developers would not take this into account when developing
applications? I don't think my application would be very successful if it
required X Mbps and half of my market did not meet this requirement. Of
course content/service providers are going to tailor their services based
around their market.

--Blake

Scott Helms wrote the following on 5/16/2014 12:06 PM:

Blake,

I might agree with your premise if weren't for a couple of items.

1)  Very few consumers are walking around with a HD or 4K camera today.

2)  Most consumers who want to share video wouldn't know how to host it
themselves, which isn't an insurmountable issue but is a big barrier to
entry especially given the number of NAT'ed connections.  I think this is
much more of a problem than available bandwidth.

3)  Most consumers who want to share videos seem to be satisfied with
sharing via one of the cloud services whether that be YouTube (which was
created originally for that use), Vimeo, or one of the other legions of
services like DropBox.

4)  Finally, upstream bandwidth has increased on many/most operators.  I
just ran the FCC's speedtest (mLab not Ookla) and got 22 mbps on my
residential cable internet service.  I subscribe to one of the major MSOs
for a normal residential package.


Scott Helms
Vice President of Technology
ZCorum
(678) 507-5000
--------------------------------
http://twitter.com/kscotthelms
--------------------------------


On Fri, May 16, 2014 at 12:38 PM, Blake Hudson <blake () ispn net <mailto:
blake () ispn net>> wrote:

    Certainly video is one of the most bandwidth intensive
    applications. I don't deny that a < 1 Mbps video call is both less
    common and consumes less bandwidth than an 8Mbps HD stream.
    However, if Americans had access to symmetric connections capable
    of reliably making HD video calls (they don't, in my experience),
    we might be seeing video calls as a common occurrence and not a
    novelty. I think the state of usage is a reflection on the
    technology available.

    If the capability was available at an affordable price to
    residential consumers, we might see those consumers stream movies
    or send videos from their home or mobile devices via their
    internet connection directly to the recipient rather than through
    a centralized source like Disney, NetFlix, Youtube, etc. Video
    sharing sites (like youtube, vimeo, etc) primary reason for
    existence is due to the inability of the site's users to
    distribute content themselves. One of the hurdles to overcome in
    video sharing is the lack of availability in affordable internet
    connectivity that is capable of sending video at reasonable
    (greater than real time) speeds.

    --Blake

    Scott Helms wrote the following on 5/16/2014 11:02 AM:

        Blake,

        None of those applications come close to causing symmetrical
        traffic patterns and for many/most networks the upstream
        connectivity has greatly improved.  Anything related to voice
        is no more than 80 kbps per line, even if the SIP traffic
        isn't trunked (less if it is because the signaling data is
        shared).  Document sharing is not being impinged, on my
        residential account right now I've uploaded about 30 documents
        this morning including large PDFs and Power Point presentations.

        Off site back up is one use that could drive traffic, but I
        don't believe that the limiting factor is bandwidth.  We
        looked at getting into that business and from what we saw the
        limiting factor was that most residential and SOHO accounts
        didn't want to pay enough to cover your storage & management
        costs.  In our analysis the impact of bandwidth on the
        consumer side adoption was basically zero.  There is no
        expectation that back ups run instantly.  Having said all of
        that, even if hosted back up became wildly popular would not
        change the balance of power because OTT video is both larger,
        especially for HD streams, and used much more frequently.


        Scott Helms
        Vice President of Technology
        ZCorum
        (678) 507-5000 <tel:%28678%29%20507-5000>
        --------------------------------
        http://twitter.com/kscotthelms
        --------------------------------


        On Fri, May 16, 2014 at 11:53 AM, Blake Hudson <blake () ispn net
        <mailto:blake () ispn net> <mailto:blake () ispn net
        <mailto:blake () ispn net>>> wrote:


            Jay Ashworth wrote the following on 5/16/2014 10:35 AM:

                ----- Original Message -----

                    From: "Mark Tinka" <mark.tinka () seacom mu
        <mailto:mark.tinka () seacom mu>
                    <mailto:mark.tinka () seacom mu
        <mailto:mark.tinka () seacom mu>>>
                    While that is true a lot of the time (especially
        for eyeball
                    networks), it is less so now due to social media.
        Social
                    media forces the use of symmetric bandwidth (like
        FTTH),
                    putting even more demand on the network,

                Oh yes; clearly, Twitter will be the end of L3.

                :-)

                Could you expand a bit, Mark on "Social media forces
        the use
                of symmetric
                bandwidth"?  Which social media platform is it that
        you think
                has a)
                symmetrical flows that b) are big enough to figure into
                transit symmetry?

                Cheers,
                -- jra

            Applications like Skype and Facetime (especially
        conference calls)
            would be one example where an application benefits from
        symmetric
            (or asymmetric in favor of higher upload speed) connectivity.
            Cloud office applications like storage of documents,
        email, and
            IVR telephony also benefit from symmetrical connectivity.
        Off-site
            backup software is another great example. Most residential
            connections are ill suited for this. I believe these
        applications
            (and derivatives) would be more popular today if the
        connectivity
            was available.

            --Blake








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