FTTH ONTs and routers

Scott Helms khelms at zcorum.com
Thu May 15 17:21:34 UTC 2014


I've seen it done both ways, and _usually_ newer ONTs will have the
capacity even if its not used.  Having said that there is no real
standardization between vendors other than the physical layer (and even
that's not great) so what's common for one vendor may well be unheard of
for another.  Making generalizations about G/EPON gear is very hard right
now and its worse for the older standards like BPON.

Scott Helms
Vice President of Technology
(678) 507-5000

On Thu, May 15, 2014 at 1:11 PM, Jean-Francois Mezei <
jfmezei_nanog at vaxination.ca> wrote:

> It had been my impression that ONTs, like most other consumer modems,
> came with built-in router capabilities (along with ATA for voice).
> The assertion that ONTs have built-in routing capabilities has been
> challenged.
> Can anyone confirm whether ONTs generally have routing (aka: home router
> that does the PPPoE or DHCP and then NAT for home) capabilities?
> Are there examples where a telco has deployed ONTs with the router
> built-in and enabled ? Or would almost all FTTH deployments be made with
> any routing disabled and the ONT acting as a pure ethernet bridge ?
> (I appreciate your help on this as I am time constrained to do research).

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