[AusNOG] VDSL2 SFP Modem

[Chris Kawchuk]

NBNCo has a limit of about 1530-some-odd bytes on the VDSL link. 

It's larger than the standard MTU+PPPoE headers so you can run full 1500, but not enough to run EoMPLS/L2CKTs over it... short by about 6 bytes, so forget about running MPLS-to-the-Edge for layer-2 on FTTN/FTTB stuff.

- Ck.



> On 26 Aug 2019, at 7:28 am, Nathan Brookfield <Nathan.Brookfield at simtronic.com.au> wrote:
> 
> Do you mean baby giants? Haha!
> 
> On 26 Aug 2019, at 06:26, Damien Gardner Jnr <rendrag at rendrag.net <mailto:rendrag at rendrag.net>> wrote:
> 
> As an addon to the above, they only support bridging of 2-3 MAC addresses. Which is probably not an issue with a single device, but it's insanely annoying if you run multiple devices doing PPPOE behind a bridged modem.
> 
> So I'm curious.. What ARE folks using as a bridged VDSL modem that supports tiny jumbo frames? (Which was the main reason I went for the VDSL SFP in the first place..)
> 
> On Fri, 16 Aug 2019 at 16:41, Guy Ellis <guy at traverse.com.au <mailto:guy at traverse.com.au>> wrote:
> Hi Shane,
> 
> We have tested these in our lab - the VDSL performance is acceptable.
> 
> However there are a couple of downsides...
> 
> (i) No DSL configuration
> (ii) No Stats, not even line sync
> (iii) Price
> (iv) They use a fair bit of power, and the host mainboard must have a 
> clean well filtered 3.3V supply delivered to the SFP slot.
> 
> We were unable to get ADSL working, not sure if that was firmware or (i) 
> above.
> 
> Due to (i) .. (iv) we have moved to a different Internal VDSL solution.
> 
> Kind regards,
> 
> - Guy.
> 
> 
> On 16/08/2019 4:18 pm, Shane Chrisp wrote:
> > Hi,
> >
> >  I just became aware of these VDSL2 SFP modems and I was wondering if 
> > anyone has tried these or a similar device from another supplier in AU 
> > and if so how they performed?
> >
> -- 
> Guy Ellis
> Mobile +61 419 398 234
> AU 03 9489 6678
> NZ 09 884 9756
> www.traverse.com.au <http://www.traverse.com.au/>
> 
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> 
> -- 
> Damien Gardner Jnr
> VK2TDG. Dip EE. GradIEAust
> rendrag at rendrag.net <mailto:rendrag at rendrag.net> -  http://www.rendrag.net/ <http://www.rendrag.net/>
> --
> We rode on the winds of the rising storm,
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