Thus spake "Iljitsch van Beijnum" <iljitsch@muada.com>
At 155 Mbps you need 32 MB worth of buffer space to arrive at a delay like this. I wouldn't put it past ATM vendors to think of this kind of over-enthusiastic buffering as a feature rather than a bug.
Traditionally, it's ATM switches that have tiny buffers and routers that have excessive buffers. ATM networks have closed-loop feedback and ingress policing mechanisms to handle this scenario; IP networks just throw buffers at the problem and hope it works.
Does anyone have any thoughts on optimum buffer sizes?
The "correct" amount of buffer space for a link is equal to its bandwidth-delay product. Unfortunately, this requires per-link testing and configuration on the part of the operator, which is extremely rare. S