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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: UUNET Routing issues
Thus spake "Iljitsch van Beijnum" <[email protected]> > 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
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