On Feb 19, 2008, at 9:11 AM, Iljitsch van Beijnum wrote:
On 19 feb 2008, at 14:20, John C Klensin wrote:
(1) With NATs, every SOHO network (or at least every SOHO
network an ISP can claim with a straight face to support) has
exactly the same topology and addressing architecture.
Is this important? The external address(es) are still different.
Sure, but the home internal networks are identical. So Homeowner A
calls up the ISP support and is having a problem getting a machine to
work with the wireless router provided by the ISP. So the ISP tech
says "on a working machine, point your browser to 192.168.10.1 and...."
A while later Homeowner B calls in with a similar problem. The ISP
tech says "on a working machine, point your browser to 192.168.10.1
and..." Same with Homeowners C, D, E and so on.
The variables are reduced to the smallest number so that the tech
support issues can be reduced to as few as possible. The responses to
those issues can then be scripted so that call center folks with
minimal knowledge of the subject can assist (or the entire support
operation can be outsourced to some remote call center).
So for those ISPs that do this, using NAT to have identical home
networks is a beautiful thing. Keeps their costs low and hopefully
their customer satisfaction high. (Of course, probably exactly
*none* of those of us on this list have such an ISP since we all like
to mess with our own networks.)
Dan York, CISSP, Director of Emerging Communication Technology
Office of the CTO Voxeo Corporation dyork(_at_)voxeo(_dot_)com
Phone: +1-407-455-5859 Skype: danyork http://www.voxeo.com
Blogs: http://blogs.voxeo.com http://www.disruptivetelephony.com
Bring your web applications to the phone.
Find out how at http://evolution.voxeo.com
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