Rollup: Small City Municipal Broadband
Tim Jackson
jackson.tim at gmail.com
Sun Feb 3 03:22:05 UTC 2013
C7 is old school. E7/E20 is far far far far far far different.
On Feb 2, 2013 2:55 PM, "Scott Helms" <khelms at zcorum.com> wrote:
> Jay,
>
> I'm spotty on mailing lists since most of my time is spent building these
> kinds of networks.
>
> 1) Talk to more vendors than just Calix, especially if they're quoting
> their Ethernet density on the C7. Also, keep in mind that port density may
> or may not be relevant to your situation since space for muni shelves isn't
> usually a problem. Port density is much more important if you're deploying
> in existing telco enclosures but muni networks tend (not universally of
> course) to reuse existing city infrastructure building to house the nodes
> of their network. Please note that I am not reccomending against Calix,
> they're a good solution in many cases, but AE is not a strong point on the
> C7. The E7 and the B series, which is the old Occam product, is much
> better than the C7. For that matter I wouldn't consider doing a new build
> on the C7 since that platform's EoL can't be too far in the future.
>
> 2) I have no idea who told you this, but this is completely and utterly
> incorrect in nationwide terms. If you have a specific layer 3 provder in
> mind that tells you they want a GPON hand off then that's fine, but ISPs in
> general don't know what GPON is and have no gear to terminate that kind of
> connection.
>
>
> On Sat, Feb 2, 2013 at 3:22 PM, Jay Ashworth <jra at baylink.com> wrote:
>
> > ----- Original Message -----
> > > From: "Scott Helms" <khelms at zcorum.com>
> >
> > > Why on earth would you do this with PON instead of active Ethernet?
> > > What GPON vendor have you found where their technical staff will tell
> you
> > > this is a good architecture for their PON offering?
> >
> > Asked and answered, Scott; have you been ignoring the threads all week?
> >
> > I'm pretty sure I even answered it in the posting, but just in case:
> >
> > 1) Line cards for the OLT frames appear to be 2 orders of magnitude
> denser
> > for GPON termination than AE (480 ports per 10U vs 10k ports per 10U in
> > Calix, unless I've badly misunderstood my sources), and
> >
> > 2) GPON is what potential L3 providers large enough to want an optical
> > handoff are generally used to.
> >
> > If someone wants AE, they can certainly have it.
> >
> > (C'mon; miss the *next* turn, too :-)
> >
> > Cheers,
> > -- jra
> > --
> > Jay R. Ashworth Baylink
> > jra at baylink.com
> > Designer The Things I Think RFC
> > 2100
> > Ashworth & Associates http://baylink.pitas.com 2000 Land
> > Rover DII
> > St Petersburg FL USA #natog +1 727 647
> > 1274
> >
> >
>
>
> --
> Scott Helms
> Vice President of Technology
> ZCorum
> (678) 507-5000
> --------------------------------
> http://twitter.com/kscotthelms
> --------------------------------
>
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