I do not usually post any specific figures on usage and links to BT and so on, but I am quite surprised on this one.
On BT 21CN we have an (expensive) commit level. We generally try to upgrade by 10Mb/s or 20Mb/s or so every now and then as usage increases. We are trying not to be the bottleneck. So if usage is hitting the limit, even if only briefly in the evening, we order more capacity to BT.
This is something we are doing a couple of times a month.
This month we went for a big jump - from 500Mb/s to 600Mb/s of 21CN. We have 20CN and BE on top of that - hence upgrades to the network to allow over a gigabit. It is mainly due to the network upgrades I have felt happy to push things this far now.
That was a huge and very expensive upgrade - 20% more capacity because, some evenings, usage was hitting limits, a bit, maybe. It is hard to pin down as our stats are screwed up this month and last month by juggling lines between the LNSs.
Still, we are a small ISP and and extra 100Mb/s of WBC is not cheap, but we really do aim not to be the bottleneck, and if that is what we are telling you, we need to put my money where our mouth is and bite the bullet and have the bandwidth.
Previously the incremental upgrades work well for a couple of weeks with no limits being trashed for a bit. I figured such a big step would really get us to zero dropped packets...
To my amazement, over the last few days, you are just grazed the limit at 600Mb/s. Not damping down the speeds of lines generally, but just hitting the limit.
I am shocked, and probably going to have to up the limit again by a big amount.
It really is quite a lot of extra usage. No - not planning on any more price increases just yet, honest. But still! just what the hell are you all downloading?!
Once this major upgrade work is all sorted I am really keen to be on zero packet loss for the links to BT for 21CN at least. 20CN is rarely an issue as we move people off it on an ongoing basis, and BE is not capped anyway.
Fun game this!
P.S. We started broadband services with 2Mb/s to BT and UUNET over 10 years ago now.
P.P.S Sorry, adding to my post - adding specific figures confuses the hell out of people. There is a huge difference between back-haul bandwidth and individual line speeds. An FTTH doing 100Mb/s can make a huge difference. What we are looking at is the sum of the small averages and statistics, so if this makes no sense to you - don't worry - you are not alone... :-)