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Re: Cisco PPP DS-3 limitations - 42.9Mbpbs?
OMG! Arent we missing the point here? What about never running links above 60% or so to allow for bursts against the 5 min average, and <shudder> upgrading or adding capacity when we get too little headroom.
And here we are, nickel and diming over a few MBps near to 45M on a DS3...
Or has the world changed so much that saturated pipes are The Way Things Are TM now.
On Wednesday, February 20, 2002, at 09:37 AM, Alex Rubenstein wrote:
BTW: 30 second input rate 13039000 bits/sec, 8055 packets/sec 30 second output rate 45531000 bits/sec, 10021 packets/sec Thats a pa-2t3+ on a flexwan in a 6509. On Wed, 20 Feb 2002, Stephen J. Wilcox wrote:Hmm, reasonable explanation.. presumably this can be improved (a little) with increased interface buffers.. ? and possibly non fifo queuing eg custom queuing in favour of TCP rathen than UDP/ICMP etc which wont have the backoffs Cheers Steve On Wed, 20 Feb 2002, Randy Bush wrote:we run HDLC on DS3 and we max at about 40.something tooif you're using five min (or three min) samples, and you're seeing 70%, peaks are likely much higher and some users' packets are being dropped. by 80%, enough packets are being dropped that users are likely to see the effects of exponential backoff. things do not improve above 80%. randy-- Stephen J. Wilcox IP Services Manager, Opal Telecom http://www.opaltelecom.co.uk/ Tel: 0161 222 2000 Fax: 0161 222 2008-- Alex Rubenstein, AR97, K2AHR, firstname.lastname@example.org, latency, Al Reuben -- -- Net Access Corporation, 800-NET-ME-36, http://www.nac.net --