How to plan network bandwidth for new sites ?

[Network_Sarovani]

Hi Team , 

How do we decide how much minimum bandwidth is required for the site where number of users working will be 100 . 

Regards , 

Chethan 

[Flavio Miranda]

Hi

 It depends on the applications you are going to run.  Only mail and web is one thing but depending on the application you may need lot more. 

 I would say 10Mbbps per client would be ok for office (mail and web). But you need to apply Oversubscrition on the Edge. You dont need to multiply 10Mbps x 100 clients.

[balaji.bandi]

There is no Thumb rule for this caculation, some time 1 user can consume whoe 10MB or 100MB or 1GB depends on use case.

So you need to make table, what is the requirement, what application and voice, data need for this sites.

WAN bandwidth is expensive. so by saying that you ma have test site , based on the outcome you can increase bandwidth.

this also need to consider costing, availability. so this required more inputs from business what that remote can do and can not do.

example if you have budget, start with 100MB and keep Monitor , some time you may start with 50MB too

[Joseph W. Doherty]

"How do we decide how much minimum bandwidth is required for the site where number of users working will be 100 ."

That's a very much "it depends" question, and, possibly, surprisingly, can be very hard to prefigure.  Ideally, often the best way to predict what bandwidth you'll need is if you have existing clients, somewhere, that are running the same applications, with the same SLA needs, as the to-be-new-site-clients.  With such existing "like" clients, you can monitor them and often use their bandwidth usages to "predict" what your to-be-new-site-clients bandwidth needs will be.

However, bandwidth needs are often just one attribute that network design needs consider.  Also, often just as important, if sometimes even more important, is end-to-end latency and/or drop rates.  Both of those attributes need to be considered, and it's possible, the to-be-new-site might have exactly the same number of users, running the same application mix, with the same (or sometimes even more) bandwidth, but those latter two attributes can be totally different and "destroy" application performance at your to-be-new-site.

Lastly, if your bandwidth is such, that traffic will queue up to use it from time-to-time, whether QoS is being enabled, and if enabled, how configured, can make a huge difference too in your bandwidth needs.