> If, for instance, you have four OSPF routers arranged like this: > A --> B > ^ | > | v > D <-- C
> where each connection is assymetric, with higher bandwidth / lower > latency in the direction of the arrow, a packet from A to C will be > routed through B, but a packet from C to A will be routed through D. > If, on the other hand, all connections are symmetric, it does not > matter whether a packet from A to C (or from C to A) is routed > through B or D. That actually does not follow. It's true only if the connections are not only symmetric but equivalent. If, for example, all connections are totally symmetric - both directions the same - but the D<->C link has substantially higher latency (both ways) than the other three, then (absent congestion and the like) A<->C will perform better if routed through B. /~\ The ASCII Mouse \ / Ribbon Campaign X Against HTML [email protected] / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B _______________________________________________ pool mailing list [email protected] http://lists.ntp.org/listinfo/pool
