On Aug 14, 2006, at 7:46 AM, Ryan Malayter wrote:
Also, many tier-2 or smaller ISPs would not want to do anything that
would increase their transport costs to tier-1 networks. Serving to
the NTP pool would add pennies per month to their bills, but I think
perhaps some would be scared off by memories of the bandwidth costs
from something like the NETGEAR-Wisconsin debacle.

It would be desirable for ISPs to provide NTP services to their customers, even if they don't want to be placed into the global pool. Doing so would reduce the need for these customers to use non- local NTP servers from other networks, and also reduce the amount of traffic going outside the ISP's network.

We don't have to add more servers to the NTP pool (although that would be desirable, too) if we can encourage ISPs to configure their DHCP servers and whatnot to access ISP-local NTP servers for normal end-user workstation clients. Otherwise, the changes which (eg) Microsoft and Apple have been making to ensure that their respective operating systems sync against time.windows.com or time.apple.com at slow rates (MacOS X uses "minpoll 12 maxpoll 17") have also been helpful to reduce NTP traffic load.

--
-Chuck

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