[Server-devel] Network Provisioning

[Stefan Reitz]

Hi Y'all,







On Fri, 2008-04-25 at 14:57 +1200, Martin Langhoff wrote: 

On Fri, Apr 25, 2008 at 2:38 PM, John Watlington <wad at media.mit.edu> wrote:
>
>  Proposed change to the hardware spec:
>
>  From one to four access points may use an simpler switch,
>  connected to the server over a 100 Mb/s link.   From five to seven
>  access points will need a better switch, which provides a 1 GB/s
>  link to the server.
>
>  This means that a 1 GB/s interface should be specified for the servers.




I feel teleported back to my 3-19-08 mail:



[...] 

(I am thinking  server clusters - red hat cluster suite is offering some nice tools which I never got a chance to use / try - thinking 3 servers with fail-over and increased performance for clients (like two servers actually doing something...) would be a starting point)

Birmingham is looking at 49 schools with a total 14,000+ students.

[...]





Theoretically, yes... but perhaps this is a bit over the top. For the
space we are aiming...




please define our aim





 - the XS services will bottleneck well before saturating 1Gb/s traffic
 - 'upstream' services that the XS is routing will bottleneck well before 1Gb/s

if we see a 7-AP setup, it will be there to support either a large
number of laptops or a location with obstacles that needs many
antennaes. In any case, it will support laptops mostly peering w
eachother.




how about those 14 - 28 AP setups?





If we are designing for a "client base" of laptops that we actually
expect to saturate 1Gb, then... we need to start recommending a
mid-range server cluster, perhaps a SAN, all costing a few megabucks


-->   http://en.wikipedia.org/wiki/Weasel_words 

;-)





You get pretty decent off-the-shelf hardware for $500 (asus m2n, athlon x2 xx , 2GB RAM) + cost of storage space) per server.

And considering not every deployment is a remote underelectrified mountain / desert / ... area, this should not be light heartedly dismissed.




cheers,



m




And I agree with Aaron Huslage that the nature of the AP is going to be another big hitter. But I really haven't seen the numbers on the budget yet. A decent (non-WRT54(...)) AP comes for $300 - 450 and is still worth considering.



So long

Stefan
�

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