Rob

Internet enthusiast - full time geek

[Rob @rob0r]

@ChorusNZ Good stuff @ChorusNZ. Your most popular plan will have twice the upload capacity (100Mbps) of @NBN_Australia "UltraFast" plan (1000Mbps download / 50Mbps upload). @PaulFletcherMP @MRowlandMP

[Rob @rob0r]

@PaulFletcherMP @AlboMP @NBN_Australia Give it a rest @PaulFletcherMP

[Rob @rob0r]

@ChorusNZ Are you paying attention @NBN_Australia @PaulFletcherMP @MRowlandMP ?

[Rob @rob0r]

@ChorusNZ Nice job @ChorusNZ. @PaulFletcherMP @MRowlandMP @NBN_Australia you need to do better.

[Rob @rob0r]

@ChorusNZ Are you seeing this? @NBN_Australia @PaulFletcherMP @MRowlandMP

[Rob @rob0r]

@Technorants @NBN_Australia @PaulFletcherMP @MRowlandMP That is factually incorrect and you're ignoring the information that's been provided.

[Rob @rob0r]

@Technorants @NBN_Australia @PaulFletcherMP @MRowlandMP For comparison, Chrous is already using XGSPON to deliver the Hyperfiber products https://t.co/Wui1iTrRmL

Currently providing 2Gbps, 4Gbps and 8Gbps (all symmetrical offerings)

[Rob @rob0r]

@Technorants @NBN_Australia @PaulFletcherMP @MRowlandMP If you look at the corporate plan report https://t.co/Wglk1VHYwI on page 29/30 - They are tracking XGSPON and NGPON2.

There is however, no commitment to when this may eventuate. I also can't find any commitment to 10Gbps being offered on Enterprise Ethernet.

[Rob @rob0r]

@Technorants @NBN_Australia @PaulFletcherMP @MRowlandMP TCP builds aren't built to be uncontended forever. A neighbour can take up TCP and be placed onto the splitter that the initial applicant paid for.

[Rob @rob0r]

@Technorants @NBN_Australia @PaulFletcherMP @MRowlandMP Its worth understanding that in a GPON network - It's 2.488Gbps downstream / 1.244Gbps upstream shared amongst 32 homes.

That means each subscriber can only be guaranteed 77.75Mbps down / 38.87Mbps up

Enterprise ethernet doesn't have this limitation.

[Rob @rob0r]

@Technorants @NBN_Australia @PaulFletcherMP @MRowlandMP They both use optical fiber, yes.

But one of them is dedicated and the other is shared with up to 32 premises. The same guarantees cannot be made over GPON that can be made over point to point ethernet.

[Rob @rob0r]

@Technorants @NBN_Australia @PaulFletcherMP @MRowlandMP Which part are you confused about?

[Rob @rob0r]

@Technorants @NBN_Australia @PaulFletcherMP @MRowlandMP https://t.co/PVD9k78rNF to understand GPON frames in more detail and how it operates at layer 2

[Rob @rob0r]

@Technorants @NBN_Australia @PaulFletcherMP @MRowlandMP It is different. They can provide higher guarantees because its a dedicated fiber back to the FAN. There's no sharing the downstream channel with up to 32 other premises or waiting for time slots (TDMA) on the upstream like there is with GPON.

[Rob @rob0r]

@Technorants @NBN_Australia @PaulFletcherMP @MRowlandMP Enterprise Ethernet product is using the ethernet protocol end to end (FAN <-> NTD)

The residential network uses GPON for layer 2 framing (OLT <-> NTD) which is different to ethernet. The NTD provides Ethernet hand off via the UNI-D ports.

[Rob @rob0r]

@Technorants @NBN_Australia @PaulFletcherMP @MRowlandMP Mostly the same except for how its patched (LFN direct to DFN) instead of via GPON splitter.

Read section 2.3.2.2 on the Network Design rules document to understand more https://t.co/CNUu35mR76

[Rob @rob0r]

@Technorants @NBN_Australia @PaulFletcherMP @MRowlandMP The Nokia SAS-K5 only has SFP (not SFP+) which is why its limited to 1Gbps. Unsure of which SFP modules / wavelength is used.

The design rules do state that Enterprise ethernet is using Ethernet though and not GPON or other xPON technology.

[Rob @rob0r]

@Technorants @NBN_Australia @PaulFletcherMP @MRowlandMP Yes, 2 different wavelengths on the same fiber for transmit / receive (Tx/Rx).

The NTD does not support GPON/XGPON frames. Only ethernet frames. It's literally a direct connection from the NTD to the FAN.

No xPON technology involved.