PON is one port at your end and then goes through splitters that reduce light and add ports to end up at customer ONTs. 1:128 is pretty short range and high customer count - we could never do that in a rural plant (5-15 miles). Maybe 1:64 but that's about the limit. There is NO redundancy in PON. Best you could do is 2x32 or whatever splitters which is where you feed the downstream fiber with two PON ports. An engineer from Metronet told me they did that but no one could ever answer why (technically or operationally). Think like you have an AP on a tower feeding 32 customers. What are the chances you have an AP right below it with the same SSID/PSK/frequency for the customers to connect to if the first AP goes down?
Think of Active E like a bunch of dumb switches. You have a 48 port switch that goes to 48 customers using 48 fibers. If the fiber feeding the switch goes down, it can go to a different fiber/uplink port. On Fri, Mar 15, 2024 at 7:59 PM Ken Hohhof <khoh...@kwom.com> wrote: > Since there are FTTH people here and I’m mostly ignorant of such things, > maybe someone can clear something up for me. > > > > I always assumed a PON based FTTH system had a topology kind of like HFC. > I expected fiber down the street with splitters, but fed by some sort of > neighborhood node in a cabinet with power and electronics, fed by active > EPL style fiber. Which could have redundant paths, rings, etc. so a fiber > cut wouldn’t take down a whole town or multiple towns, the backbone traffic > would reroute. > > > > I’ve been told this is not the case. And that instead, each PON could go > back over a strand to a headend several towns and many miles away, all > passive. > > > > Sorry for the poor description of my question, hopefully you can figure > out what I’m asking. > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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