Inexplicable difference in relative speed for national traffic over two UFB connections on the same exchange.

Forums › New Zealand Broadband › Inexplicable difference in relative speed for national traffic over two UFB connections on the same exchange.

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Talkiet

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#2220768 18-Apr-2019 17:53

You may not know the stats on how often gig performance issues turn out to be in the customer network, even when it's VERY experienced users involved. It's in the (very) high 9x percent area - think 98/99%. Given this, it's pretty reasonable to expect all possible steps to be taken before assuming that it might be in the RSP or LFC network.

If you haven't tried the _SAME_ router and _SAME_ machine cabled to the router at each address, then there's realistically little point in digging deeper.

And yes, I am talking about physically relocating one router to both addresses and running the test that way, with wireless turned OFF and only the SAME machine connected via the same ethernet cable.

(I'd also swap out the ethernet cable from the ONT to the router as well)

Sounds extreme, but trust me, this level of recommended testing is a data driven recommendation.

Cheers - N

Please note all comments are from my own brain and don't necessarily represent the position or opinions of my employer, previous employers, colleagues, friends or pets.

dc2daylight

87 posts

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#2220780 18-Apr-2019 18:17

Thanks Talkiet, that's very helpful to know actually. Although the UFB connection is not actually a gigabit one, in case you meant that... In saying this I don't think 16Mbps international to a colocation facility in Sydney (for the testmy servers) is acceptable which is what I got a short time ago this evening.

Yes it is reasonable to expect all CPE steps to be taken, and I'm writing them up here to a) request help which I have received and do appreciate and b) try to help others with a similar issue. I have no desire to dump on Voyager, or anyone else here, and think my writing has been fair and reasonable.

I'll try your suggestion of using one of the machines at another address, but moving the routers is not feasible as there are two phonelines reliant upon them, one of which has a monitored alarm sitting on the line.

I swapped out the WAN connection cable to the ONT earlier on today to one rated for 350Mhz with Cat5E, and there was no difference. The connection is lit with Yellow anyway which if I'm not mistaken means gigabit. The default Huawei firmware does not offer status for the WAN connection speed or duplex mode that I can see anywhere.

*edited to add further info not remove any*

BarTender

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#2221305 19-Apr-2019 22:11

If they are different connection speeds at the two different addresses then you can get wildly different performance.

Especially if one is a gig, and the other is 100/20.

You could be getting the policer being aggressive discarding traffic which especially if it is international traffic does happen depending on the ISP if they haven't implemented shapers for their lower speed connections.

I would listen to @Talkiet as we both spent *FAR* too long working with customer issues from cases escalated by on-site engineers that were convinced the line wasn't working to spec. In *EVERY* case except one out of an excess of 100+ cases I dealt with it was customer equipment that was the issue. The one issue where it was an LFC issue was the OLT SFP was faulty for months and all the customers connected to that port of which there were 14 or 15 were all having terrible speeds.

dc2daylight

87 posts

Master Geek

#2221358 20-Apr-2019 08:10

Thanks BarTender, and yes I'm paying attention to every reply in the thread, plus I do acknowledge the expertise of others with clearly far more knowledge than I possess about the ISP/Chorus end of things.

Both connections are exactly the same type of plan at 100/20 so that difference could be ruled out.

Where can I read about the acronyms OLT and SFP or fibre ports in general? I'm not familiar with those terms.

I'll try out some different routers today and see what happens...

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