nanog mailing list archives
Re: Current trends in capacity planning and oversubscription
From: ML <ml () kenweb org>
Date: Wed, 10 Nov 2010 07:42:32 -0500
On 11/10/2010 12:26 AM, Sean Donelan wrote:
While the answer is always it depends, I was wondering what the current rules of thumb university network engineers are using for capacity planning and oversubscription for resnets and admin networks? For K-12, SETDA (http://www.setda.org/web/guest/2020/broadband) is recommending: - An external Internet connection to the Internet Service Provider of at least 100 Mbps per 1,000 students/staff - Internal wide area network connections from the district to each school and between schools of at least 1 Gbps per 1,000 students/staff How does that compare with university and enterprise network rules of thumb?
I can tell you that no one I know in K-12 or Higher Education has the capacity for 1GE per 1000 students. Same goes for the WAN connection.
More than likely *if* they have fiber from every school to a central location it's a single pair and they couldn't afford to go 10GE. Though I have answered some RFPs where they wanted to know what it would cost. (Usually 2.5 * 1GE cost.)
I believe my Alma mater just reached 150Mbps for the 6,500 students + faculty. Sure beats the 30Mbps they started with when I was a Freshmen. I also just finished an RFP where a campus of at least 4,000 only had 100Meg. This was in a suburban environment with at least a dozen carriers competing.
Current thread:
- Current trends in capacity planning and oversubscription Sean Donelan (Nov 09)
- Re: Current trends in capacity planning and oversubscription ML (Nov 10)
- Re: Current trends in capacity planning and oversubscription Valdis . Kletnieks (Nov 10)
- Re: Current trends in capacity planning and oversubscription Michael Loftis (Nov 10)
- RE: Current trends in capacity planning and oversubscription John van Oppen (Nov 10)
- Re: Current trends in capacity planning and oversubscription Steve Meuse (Nov 10)
- RE: Current trends in capacity planning and oversubscription George Bonser (Nov 10)
- Re: Current trends in capacity planning and oversubscription Steven Bellovin (Nov 10)
- Re: Current trends in capacity planning and oversubscription Michael Loftis (Nov 10)
- Re: Current trends in capacity planning and oversubscription ML (Nov 10)
- RE: Current trends in capacity planning and oversubscription Holmes,David A (Nov 10)
- Re: Current trends in capacity planning and oversubscription Curtis, Bruce (Nov 10)
- Re: Current trends in capacity planning and oversubscription Sean Donelan (Nov 12)