New ADSLMax Interview @ ISPreview
Posted: 07th Jun, 2006 By: MarkJ
We've just uploaded a new interview, which combines the responses from three UK ISP's (NewNet, Vispa and *******). The article is five pages long and focuses on some of the problems and concerns surrounding BT's newest ADSLMax ('up to' 8Mbps) technology.
Sample quote:
3) There is a fear that the instability of ADSLMax speeds (in relation to no.2 above) could, in the future, be used as an excuse by some providers to cover their own performance problems.
Do you foresee this as a concern, not so much for your own provider, but the industry as a whole?
*******: Yes, I think a lot of ISP's will use this as an excuse to cover performance issues. But I think it will be most apparent with those ISP's that only have 1 BT Central, as the smaller the inter-connects to BT the more likely contention will apply to the ISP itself. A bigger concern though would be those ISP's that offer unlimited services without any safeguards. A 8mb line running continually at say 6.5mb for a day can download 70GB or 2100GB in a month - usage at that level, which is not uncommon, rapidly saturates BT Centrals - which will effect the speeds of all other users.
Vispa: Yes I do see this as a major concern. The problem here is that I do not believe the VPs in the actual exchange have enough bandwidth to cope and I also believe that some of the smaller ISPs like ourselves are going to suffer as well. The problem we have is that just a handful of MAX users (say half a dozen) all hammering P2P downloads will have the ability to bring a 34Mb central to its knees! You do the maths 6 X 6Mb = 36Mb. This is a central that is capable of handling at least 1200 consecutive connections with ease. I do not believe that BT have worked this into their equations.
NewNet: There is no doubt that MAX has increased the demand on ISP networks. ISPs are having to look at increasing network capacity to meet demands, potentially requiring substantial investment. ISPs are aware of the pattern of usage on their networks and can compare performance levels to usage patterns.
But, the pattern of low customer reported speed does not always mirror the ISP utilisation pattern many users report slow speeds even when ISP networks are at lowest levels of utilisation.
http://www.ispreview.co.uk/articles/max
Sample quote:
3) There is a fear that the instability of ADSLMax speeds (in relation to no.2 above) could, in the future, be used as an excuse by some providers to cover their own performance problems.
Do you foresee this as a concern, not so much for your own provider, but the industry as a whole?
*******: Yes, I think a lot of ISP's will use this as an excuse to cover performance issues. But I think it will be most apparent with those ISP's that only have 1 BT Central, as the smaller the inter-connects to BT the more likely contention will apply to the ISP itself. A bigger concern though would be those ISP's that offer unlimited services without any safeguards. A 8mb line running continually at say 6.5mb for a day can download 70GB or 2100GB in a month - usage at that level, which is not uncommon, rapidly saturates BT Centrals - which will effect the speeds of all other users.
Vispa: Yes I do see this as a major concern. The problem here is that I do not believe the VPs in the actual exchange have enough bandwidth to cope and I also believe that some of the smaller ISPs like ourselves are going to suffer as well. The problem we have is that just a handful of MAX users (say half a dozen) all hammering P2P downloads will have the ability to bring a 34Mb central to its knees! You do the maths 6 X 6Mb = 36Mb. This is a central that is capable of handling at least 1200 consecutive connections with ease. I do not believe that BT have worked this into their equations.
NewNet: There is no doubt that MAX has increased the demand on ISP networks. ISPs are having to look at increasing network capacity to meet demands, potentially requiring substantial investment. ISPs are aware of the pattern of usage on their networks and can compare performance levels to usage patterns.
But, the pattern of low customer reported speed does not always mirror the ISP utilisation pattern many users report slow speeds even when ISP networks are at lowest levels of utilisation.
http://www.ispreview.co.uk/articles/max
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