VDSL emulation

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MichaelNZ

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#248159 12-Mar-2019 17:58

I want to emulate a VDSL connection for testing and setup of modem / routers.

I was thinking something like a Netsys NV-202 or NV-720R bridge/modem connected to a PPPoE server tagged with VLAN10 would do the trick?

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chevrolux

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#2196690 12-Mar-2019 18:13

I guess the thing would be just needing to match the profiles on NZ... 17a and 8b.
Most of these units use 30a (I think) so they can do 100Mbps over the short links they're designed for.
But yea, then you could stick it on a isolated port of the Mikrotik, and VLAN 10, put a PPPoE server on it and have a nice little test bench.

toejam316

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#2196693 12-Mar-2019 18:16

If you find anything, let me know, I've had this exact thought, followed by chevrolux's thought, and then just kinda shrugged and moved on for the day.

Anything I say is the ramblings of an ill informed, opinionated so-and-so, and not representative of any of my past, present or future employers, and is also probably best disregarded.

MichaelNZ

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#2196705 12-Mar-2019 18:32

chevrolux: I guess the thing would be just needing to match the profiles on NZ... 17a and 8b.
Most of these units use 30a (I think) so they can do 100Mbps over the short links they're designed for.

Like DLM, it's neither here nor there for testing because it's not something which is likely to change whether the unit being tested will work IRL.

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hio77

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#2196708 12-Mar-2019 18:37

MichaelNZ:

chevrolux: I guess the thing would be just needing to match the profiles on NZ... 17a and 8b.
Most of these units use 30a (I think) so they can do 100Mbps over the short links they're designed for.

Like DLM, it's neither here nor there for testing because it's not something which is likely to change whether the unit being tested will work IRL.

i'd test on 17a, make sure you have correct bandplan etc.

Ideally any device your testing you should be making sure works with G.INP and G.Vector.

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MichaelNZ

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#2196712 12-Mar-2019 18:40

hio77:

i'd test on 17a, make sure you have correct bandplan etc.

Ideally any device your testing you should be making sure works with G.INP and G.Vector.

Thanks for your input - I was hoping you would turn up.

I don't know how this relates to testing whether an item works or not.

But say I was to look for this, what CO device would you recommend?

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hio77

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#2196715 12-Mar-2019 18:58

hm.

Might be worth taking a step back here...

What sort of testing are we talking about?

New devices?

Returned/possibly faulty devices?

Devices before shipping out to customer?

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MichaelNZ

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#2196717 12-Mar-2019 18:59

hio77:

hm.

Might be worth taking a step back here...

What sort of testing are we talking about?

New devices?

Returned/possibly faulty devices?

Devices before shipping out to customer?

Generally working devices which just need to the tested for basic operation and correct configuration.

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raytaylor

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#2196719 12-Mar-2019 19:06

I would suggest just subscribing to a vdsl connection and using a live one to test with.

However these units i think if i remember right allow you to select the band plan using the dip switches on the back. I might be thinking of the SNR margin setting. I imagine you could set it to CO mode and your plan should work. Even if the bandplan isnt correct, most CPE modems will automatically detect it anyway so if it works with this modem in CO mode then it should work on the chorus network.

We use the proper netsys dslams at a few apartment complexes and MDUs.

ACTUALLY

If you want to PM me your phone number I could test this for you - I have a few of them sitting in the workshop. The guys i took over the MDU networks from were adamant that we needed to use the netsys CPE with the dslams but i found a netcomm NFV18 works fine in bridge mode so to tidy up the wiring at customer sites we are now just replacing them with a standard vdsl router rather than the separate vdsl bridge + ethernet router

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hio77

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#2196720 12-Mar-2019 19:11

raytaylor:

We use the proper netsys dslams at a few apartment complexes and MDUs.

bleh.. just run the chorus fibre and be done with that mess!

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sbiddle

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#2196721 12-Mar-2019 19:13

They will work within reason - I've deployed large numbers of these in PtP configs and have some setup as a CO units speaking to VDSL2 modems.

Not all modems will speak to them as it's not really what they're designed for and you have no way of configuring the bandplan or modulation used, so wouldn't really consider it the most appropriate solution for what sounds like testing of production equipment rather than a simple test lab.

hio77

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#2196722 12-Mar-2019 19:13

MichaelNZ:

Generally working devices which just need to the tested for basic operation and correct configuration.

Right, well that would do what you want....

Honestly, i'd just get a bog standard VDSL line installed at your premises for the point of testing.

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BarTender

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#2196730 12-Mar-2019 19:33

If you have pockets deep enough and want to test on the real thing then contact the Spark Network Integration Lab via http://www.nil.net.nz and if you're based in Wellington they have ALU DSLAMs of ASAMS and ISAMS plus testing for all access types and line length testers that go up to 8km. Awesome toys to play with in there.