IMHO: What ever solution you end up proposing should able to handle (3) and should work with arbitrary boundaries for (1) & (2). We don't want to add another failure mode to the network that depends on time synchronization. You don't want to shift the problem from BGP to NTP. Regards Bora On 9/17/07 3:54 PM, "Xin Liu" <smilerliu@gmail.com> wrote:
Sorry for the confusion. Let me clarify.
We are interested in a number of questions: 1. Can we assume loosely synchronized router clocks in the Internet, or we have to make absolutely no assumption about router clocks at all? 2. If the router clocks are indeed loosely synchronized, what is the granularity we can assume? Particularly, we are interested in whether we can assume router clocks are synchronized within 10 minutes. 3. It's always possible that a router's clock goes wrong. In practice, how often does this happen?
Thank you for all the replies.
Best Regards,
Xin Liu
On 9/17/07, Randy Bush <randy@psg.com> wrote:
i conversed offline with the OP. he was reading a sigcomm research paper and confusing it with the internet.
randy