Merit Network
Can't find what you're looking for? Search the Mail Archives.
  About Merit   Services   Network   Resources & Support   Network Research   News   Events   Home

Discussion Communities: Merit Network Email List Archives

North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: Cisco PPP DS-3 limitations - 42.9Mbpbs?

  • From: Alex Rubenstein
  • Date: Wed Feb 20 12:39:47 2002


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 too
> >
> > if 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, alex@nac.net, latency, Al Reuben --
--    Net Access Corporation, 800-NET-ME-36, http://www.nac.net   --






Discussion Communities


About Merit | Services | Network | Resources & Support | Network Research
News | Events | Contact | Site Map | Merit Network Home


Merit Network, Inc.