[email protected] said: > It was my understanding that the receiving station knows the path taken, is > that the case? Or are you saying even when it's the same path the time > delay has large variations?
Even if the path is stable, the delays vary due to queuing delays in routers. The simple example is a router with 3 cables. Call them A, B, and C. Assume they are all the same speed. If B is idle, packets that come in on A can go out C right away. But suppose A and B are both sending traffic out C. If packets arrive at close to the same time, the second one will have to wait on a queue until the first one is finished. If a clump of packets arrives the queue can get longer. There is another source of queuing. That's when the link speed changes. Suppose the server has a 100 megabit connection, the backbone has gigabit links, and the last hop is 1 megabit. (just to pick some round numbers) If the server sends a clump of packets, they go out at 100 megabits, probably won't hit much queuing delay in the backbone, but then they pile up on the last hop. -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
