nanog mailing list archives

RE: Muni fiber: L1 or L2?


From: "Frank Bulk \(iname.com\)" <frnkblk () iname com>
Date: Fri, 1 Feb 2013 16:49:43 -0600

Fletcher:

Many rural LECs are homerunning their fiber back to the CO, such that the
optical splitters are only in the CO.  It gives them one management point,
the highest possible efficiency (you can maximize any every splitter and
therefore PON) and a pathway to ActiveE.

Frank

-----Original Message-----
From: Fletcher Kittredge [mailto:fkittred () gwi net] 
Sent: Thursday, January 31, 2013 3:58 PM
To: Owen DeLong
Cc: NANOG
Subject: Re: Muni fiber: L1 or L2?

On Thu, Jan 31, 2013 at 4:36 PM, Owen DeLong <owen () delong com> wrote:

If you have an MMR where all of the customers come together, then you
can cross-connect all of $PROVIDER_1's customers to a splitter provided
by $PROVIDER_1 and cross connect all of $PROVIDER_2's customers to
a splitter provided by $PROVIDER_2, etc.

If the splitter is out in the neighborhood, then $PROVIDER_1 and
$PROVIDER_2
and... all need to build out to every neighborhood.

If you have the splitter next to the PON gear instead of next to the
subscribers,
then you remove the relevance of the inability to connect a splitter to
multiple
OLTs. The splitter becomes the provider interface to the open fiber plant


Owen;

Interesting.   Do you then lose the cost advantage because you need home
run fiber back to the MMR?   Do you have examples of plants built with this
architecture (I know of one such plant, but I am hoping you will turn up
more examples.)

regards,
Fletcher
-- 
Fletcher Kittredge
GWI
8 Pomerleau Street
Biddeford, ME 04005-9457
207-602-1134




Current thread: