You can check freshness of a message by means of sequence numbers, no? Bora On 9/18/07 8:55 AM, "Xin Liu" <smilerliu@gmail.com> wrote:
Ideally, yes, a protocol should not rely on clock synchronization at all. However, to ensure freshness of messages, we don't have many choices, and clock synchronization seems to be the least painful one. So we asked about router clocks on the current Internet. If normally router clocks are synchronized and we have a mechanism to detect and fix out-of-sync clocks, is it reasonable to assume clock synchronization in the rest of our design?
Best Regards,
Xin Liu
On 9/17/07, Bora Akyol <bora.akyol@aprius.com> wrote:
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