"Joachim Schrod" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]
> [...] What do you think of his idea to use server declarations to > handle better the case of Internet connection outage? Peering can indeed cause massive problems, including that 24-hour spiral of doom. That particular problem is caused by having a number of peers all at the same local-clock stratum. If one of them is put at a lower stratum than the others, they will follow it instead of their own clocks. If it dies, they will descend into the spiral after all, however, the same solution applies. The end result is a staggered local-clock layout with e.g. peer A at stratum 8, B at 10, C at 12, and D at 14. Tom proposes a directional circle of servers instead of a fully-connected mesh. Both serve the same purpose: if one of the servers loses all of its own external references, it can 'borrow' those of a neighbour. In the mesh, all neighbours are always eligible, and a peer will only ever fall one stratum as long as any outside references are left anywhere. In the circle, _if_ internal hosts are also failing, it may take more indirections or the network may even become partitioned. Groetjes, Maarten Wiltink _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
