nanog mailing list archives
Re: Question on Loosely Synchronized Router Clocks
From: Bora Akyol <bora.akyol () aprius com>
Date: Tue, 18 Sep 2007 09:09:58 -0700
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
Current thread:
- Question on Loosely Synchronized Router Clocks Xin Liu (Sep 17)
- Re: Question on Loosely Synchronized Router Clocks Randy Bush (Sep 17)
- Re: Question on Loosely Synchronized Router Clocks Kevin Oberman (Sep 17)
- Re: Question on Loosely Synchronized Router Clocks Valdis . Kletnieks (Sep 17)
- Re: Question on Loosely Synchronized Router Clocks Randy Bush (Sep 17)
- Re: Question on Loosely Synchronized Router Clocks Xin Liu (Sep 17)
- Re: Question on Loosely Synchronized Router Clocks Bora Akyol (Sep 17)
- Re: Question on Loosely Synchronized Router Clocks Xin Liu (Sep 18)
- Re: Question on Loosely Synchronized Router Clocks Bora Akyol (Sep 18)
- Re: Question on Loosely Synchronized Router Clocks Xin Liu (Sep 18)
- Re: Question on Loosely Synchronized Router Clocks Bora Akyol (Sep 18)
- Re: Question on Loosely Synchronized Router Clocks Valdis . Kletnieks (Sep 18)
- Re: Question on Loosely Synchronized Router Clocks Steven M. Bellovin (Sep 18)
- Re: Question on Loosely Synchronized Router Clocks Valdis . Kletnieks (Sep 17)
- Re: Question on Loosely Synchronized Router Clocks Adrian Chadd (Sep 18)
- Re: Question on Loosely Synchronized Router Clocks William Herrin (Sep 18)
- Re: Question on Loosely Synchronized Router Clocks Stephen Sprunk (Sep 18)
- Re: Question on Loosely Synchronized Router Clocks Jeff McAdams (Sep 19)
- Re: Question on Loosely Synchronized Router Clocks James R. Cutler (Sep 20)
- Re: Question on Loosely Synchronized Router Clocks Brandon Galbraith (Sep 20)