Another important factor is where the sites are located. congestion is most prevelant in the NNI's.
"McCallum, Robert" wrote: > I have seen circuits built and have been working absolutely perfectly with > 5:1 contention. For this scenario I would easily suggest a 2 or 3:1 > contention. Lets face it what are the chances of the three buildings > loading 14 MB each at the same time??? I say nil > > -----Original Message----- > From: Chuck Larrieu [mailto:[EMAIL PROTECTED]] > Sent: 01 February 2002 19:34 > To: [EMAIL PROTECTED] > Subject: Re: frame relay question [7:34090] > > Some telcos have some basic oversubscription requirements, designed more so > that they can sell you more bandwidth than as a real practical requirement. > > Here in California, for example, the local telco permits no more than a 2 > for 1 oversubscription. > > So if you have 20 spokes, each at 256K CIR, then you MUST have a minimum > 2.56 megabit CIR at your center ( fractional DS3 or ATM ), for example. > > I believe the reasoning is that the telco does not want a lot of calls > complaining about their circuits when the problem is overutilization of > bandwidth. And they want to sell you more, of course. ;-> > > Chuck > > ""Patrick Ramsey"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > I usually use the 1 to 8 rule.... for every 8mb you think you need, order > 1 > > > > Will each facility be pumping a solid 14mb across the wan all day long? > > > > If so, one ds3 (45mb) will suffice at the HQ....then purchase shaped DS3 > > circuits for the WAN... (15mb shape) > > > > -Patrick > > > > >>> "Yatou Wu" 02/01/02 01:20PM >>> > > Hi, > > > > if there are one central site and three remote sites. all the remote sites > > need to connect to the central site. now I need to decide the access > circuit > > and port speed for the central site. the CIR requirement are following: > > > > Remote site A: 14M > > Remote site B: 14M > > Remote site C: 14M > > > > how many T3 access Circuits and ports are needed for the central sites? > > > > any advise is highly appreciated! > > > > yatou > > > > > > _________________________________________________________________ > > Join the worlds largest e-mail service with MSN Hotmail. > > http://www.hotmail.com > > >>>>>>>>>>>>> Confidentiality Disclaimer This email and any files > transmitted with it may contain confidential and > > /or proprietary information in the possession of WellStar Health System, > > Inc. ("WellStar") and is intended only for the individual or entity to > whom > > addressed. This email may contain information that is held to be > > privileged, confidential and exempt from disclosure under applicable law. > If > > the reader of this message is not the intended recipient, you are hereby > > notified that any unauthorized access, dissemination, distribution or > > copying of any information from this email is strictly prohibited, and may > > subject you to criminal and/or civil liability. If you have received this > > email in error, please notify the sender by reply email and then delete > this > > email and its attachments from your computer. Thank you. > > > > ================================================================ -- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications Inc. 612-664-3367 [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34207&t=34090 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
