If you are getting a RED LINK LIGHT on the NCD, then there is a fault where it cannot supply reverse power to the DPU.
Either a DPU or NCD fault, requiring the RSP to log a fault with NBNCo to investigate. On Mon, Jan 3, 2022 at 9:13 PM Chris Chaundy <[email protected]> wrote: > BTW, I’m getting a red flashing link light on the NCD but if I unplug it > from the wall, the link light changes to blue (still flashing) so it seems > to be talking to the DPU, but maybe getting some fault indication? > > Sent from my iPhone > > On 3 Jan 2022, at 20:55, Chris Chaundy <[email protected]> wrote: > > > Hi Greg, > > Thanks for the info (a fair bit I was already aware of though) but up > where I am, pretty much everyone has their own DPU (big properties along a > dirt road. No concern with pits full of water though - everything is on > power poles including the DPUs and the fibre that connects them back to the > network (plus the copper feed into my house)! It does go underground > further down the mountain near the township but I'm not sure where the next > 'active' kit is located (there is a lot of reading in the document the link > you sent :-). > > These are not brief hits but outages that have lasted for days. Your > comment about the DPU losing its configuration is interesting though and > may well be the issue. I hope they replace it when NBNco visits me > tomorrow! > > Cheers, Chris > > Sent from my iPhone > > On 3 Jan 2022, at 19:55, Greg Lipschitz <[email protected]> > wrote: > > > Hi Chris, > > The nbn DPU (the "mini-vdsl/gfast dslam" which lives in the pit) is > reverse powered (about 6-14W) from the NCD (the nbn box inside your house). > nbn use a mix of Netcomm and more recently Nokia DPU's. The DPU only > needs 1 customer NCD connected to it to supply the power. > > The DPU can connect up to 4 premises and the interesting thing is that any > of the RSP's who have a customer connected to the DPU can initiate a DPU > reset via the nbn API. > > So, you might be with Telstra, and your neighbours with Aussie Broadband, > TPG and Optus and any one of them can essentially cause your service to > drop momentarily if they contact their RSP who initiates the DPU reset as > part of the troubleshooting. > > We've found that the DPU's often suffer the same fate as the old ADSL > copper services when the pit fills up with water, the DPU goes off to la-la > land (who would have thunk power and water didn't mix!) or the copper > between the DPU and the customer gets corroded and needs to be cleaned up > or replaced. > > I've not heard of power issues causing the DPU to have issues. It sounds > like the DPU is perhaps losing its config when there's a power interruption > (we've certainly seen that with the Telstra EA MRV OS904 NTU's over the > years). > > If you're interested how it all comes together, nbn publish their design > docs - > https://www.nbnco.com.au/content/dam/nbn/documents/sell/sau/network-design-rules-20210630.pdf > > Cheers > Greg > > > > > Greg Lipschitz | Founder & CEO | Summit Internet > *[email protected]* <[email protected]> > *summitinternet.com.au* <http://summitinternet.com.au> > *1300 049 749* <1300%20049%20749> > *Unit 2, 31-39 Norcal Road, Nunawading VIC 3131* > <https://www.google.com/maps?cid=12522583051503623677&_ga=2.149009334.1057584350.1554770858-1081443428.1554770858> > [image: Summit Internet] <http://summitinternet.com.au> > ------------------------------ > *From:* AusNOG <[email protected]> on behalf of Chris > Chaundy <[email protected]> > *Sent:* 03 January 2022 09:26 > *To:* [email protected] <[email protected]> > *Subject:* [AusNOG] NBN FTTC services and power hits > > Is there anyone from NBNco on this list willing to discuss this with me? > > It seems that every time there is a power hit in our locality (which with > Ausnet is pretty regularly), the FTTC services die and don’t come back > until you log a fault through the provider (in my case, Telstra) and then > wait for them to go through the hoops of dealing with NBNco. > > This has happened four times in the last couple of months (thankfully I > have 4G backup). There must be some aggregator kit that has no power > backup or cannot recover from power outages - pretty crap really. :-| > > Sorry if this is a little OT for the list but I’d be interested if other > FTTC areas see the same problem. > > Sent from my iPhone > _______________________________________________ > AusNOG mailing list > [email protected] > > https://aus01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.ausnog.net%2Fmailman%2Flistinfo%2Fausnog&data=04%7C01%7Cglipschitz%40summitinternet.com.au%7C7d3675defb8a4be9a6ab08d9ce3ef1a0%7C0838a12f226e43dfa6e4bb63d2643a7e%7C1%7C0%7C637767592012923616%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=eaYK8fpeVKh%2FCKcTW5KgKBQOB32TYug2Q5GLkCN7xLo%3D&reserved=0 > > _______________________________________________ > AusNOG mailing list > [email protected] > http://lists.ausnog.net/mailman/listinfo/ausnog >
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