Recommended transition solution for ISP:s with enterprise customers?

What would be the recommended solution(s) for ISP:s with enterprises only as customers?
It both needs to support IPv6 and at the same time save IPv4 resources.
Thanks in advance!

Hi,
There are many possible choice for a soft transition of the Service Provider:
- Dual-Stack
The SP can run both protocols in the backbone for a while so he can test IPv6 Service by switching some part of the Network to IPv6 Only and see if it is OK. In case there is a problem he can get back to dual-stack, fix the issue and resume its testing until it is Ok and he can allow IPv6 Only.
- It is possible to provide IPv6 Service without upgrading the backbone to IPv6 Immediately using 6RD if the backbone is IPv4 or 6PE /6VPE (I did the dev-test for 6PE and 6VPE for CISCO for 3 years) if the backbone is IPv4/MPLS. This way the SP can start providing both IPv4 and IPv6 without upgrading the backbone. He can then move slowly to IPv6 with a Dual-Stack period not to switch immediately to IPv6 and allow to fallback if soething is not properly configured to work in IPv6 Only.
With 6VPE, the customer benefit of a dual-stack VPN and recently, CISCO has improved the Support of Multicast in MPLS which was main weakness of MPLS based solutions.
Once the SP has migrated to IPv6 Only, it is still possible to offer dual-stack, IPv4 and IPv6 service to its customers using DS-Lite or better, A+P when it will be available as A+P (dIVI-pd based) does not rely on CGN which has a couple of drawbacks for the SPs.
Once the Customer has migrated to IPv6 Only, it is also still possible to access some IPv4 resources (Networks, servers, applications) using NAT64.
I have a presentation for you:
http://www.slideshare.net/fredbovy/transition-to-ipv6-and-security
And you will find more on my page:
http://www.fredbovy.com
I will be glad to help you further.
Fred Bovy
15 years ccie #3013
18 years ccsi #33517 (former #95003)
IPv6 Forum Gold Certified Engineer
IPv6 Forum Gold Certified Trainer
Email: [email protected]
Web: http://www.fredbovy.com
Wicki: http://www.fredbovy.com/MediaWiki
Twitter: http://twitter.com/#!/Fr

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The whole reason why Aperture is hopeless at using the R2400's premium profiles is because - unusually - their default rendering intent is set to 'relative colorimetric' rather than 'perceptual'. You might say 'but that's good - it means you get more accurate colours!', and if you do, you're right... however, there's a snag. To get an image to reproduce well using Epson's premium profiles and relative colorimetric rendering, you really need to use black point compensation. This is where the trouble lies: Aperture's black point compensation is diabolical to the point of being unusable when used with relative colorimetric rendering - I feel I need to be awarded compensation every time I've ever tempted to use the setting. So because BPC in Aperture is unusable, that effectively makes the premium profiles unusable too, because Aperture always uses the default rendering intent specified in the profile.
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sips -s renderingIntent perceptual
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Now, I said near the beginning of this post that all the above can apply to other printers too. Most printer profiles have 'perceptual' set as their default rendering intent, in which case everything I've just said won't be of much help. However, If you are reading this because you're having problems with ICC profiles in Aperture, but you don't use an Epson R2400, find your problematic ICC profile, double-click on it, and take a look at the window that opens: specifically, at the 'Rendering Intent' the window mentions. If it doesn't say 'Perceptual' then it may well be worth trying the steps I've outlined in this post to set it to perceptual, to see if doing so produces an improvement when using the profile in Aperture.
Finally, just one note of caution: if you decide to try out the steps I've detailed above on a paid-for custom-made profile, please back your profile up before messing with it. I haven't experienced any problems when using SIPS to change a profile's rendering intent, but I obviously can't guarantee that it won't do something weird and corrupt your expensive custom-made profile.
If you have any questions, feel free to ask, although (contrary to any impression I may give) I am not a colour-management expert; I'm just someone who doesn't give up when they have a problem that should be solvable.
Thomas
Mac Pro 2.0GHz with 30" ACD; 15" MacBook Pro 2.0GHz Mac OS X (10.4.10)

Thomas
Wow - thanks for such a comprehensive post.
I have Aperture and a 2400 so this information is exceptionally useful to me.
Again - thanks for caring and sharing
Brian

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Thanks a ton in advance
Paul

If it is sold by Macsales, chances are it will work.
But I will also say this as a qualifier. If your iBook G4 predates the introduction of USB 2 on the iBook G4, your best speed on a USB WiFi is going to be 12 Mbps. And that's if no other USB devices are hooked up to it, because it has one USB bus. You are much better off getting the airport card inside the iBook replaced by an authorized dealer. Anything that will cause damage to internal components of the machine likely will affect more than one part of the machine, and you just happen to be lucky that it hasn't caused further problems for you. It does not pay to have a machine limping. Get the entire machine fixed.

Recommended transition solution for ISP:s with enterprise customers?

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