ايه رأيكو

السلام عليكم ورحمة الله وبركاته

اخواني الكرام انا مقدم علي مشروع كبير عباره عن

شبكه مكونه من 800 جهاز كمبيوتر موزعه علي 4 مباني كل منها مكون من عدة طوابق
يحتوي كل مبني علي 200 جهاز كمبيوتر والمباني غير متجاوره كل منها في محافظه تبعد حوالي 20 كم

المطلوب هو توصيل الشبكه كامله معا

فكرت فكره
هي اني اعمل parent domain and 4 child domains, one for every building
بس انا محتار في اماكن وتوزيع السويتشات والروترز و يا ترا استخدم سيسكو ولا لا علشان كمان الجانب المادي مهم في المشروع
وطريقة ربط الفروع: انا فكرت اعمل Leased Line لأن ال DSL ما اضمنش انه يفضل stable
ده غير طبعا بقيت السيرفرات التانيه دي مش مشكله
انا بس محتاج افكار عامه لشكل الشبكه وطريقة الربط بين الفروع
انا كمان لسه بعمل دراسه مبدئيه حاليا لاني لسه ما زرتش الموقع

انا عاوز طبعا احسن الحلول باقل تكلفه
يا ريت لو حد عنده فكره يشاركنا فيها ونناقشها
وانا ان شاء الله اول ما ازور الموقع اكيد امور كتيره هتتضح بس انا كنت عاوز اعمل تخيل كده للوضع المبدئي

i think fram relay as praimary and isdn as a backup will sutable for this network

You will need 4 routers , one router for each site. The number of switches will depends on
the number of workstations, servers, offices you have in each building.
You can connect the sites using Frame relay or leased lines or even VPN. Frame relay is cheaper but leased lines are more secure. It is better to contact service providers in the area to check the options available to you and also the cost for each option.
If you can afford to avoid hubs and use only switches that will be great otherwise make sure that you connect the servers to fast ports on the switches and only use hubs on offices that have small number of workstations or those where speed won't be problem.
You will need to think about how you will subnet your address , keep in mind that you can divide your network by geographical places i.e. building or by functionality i.e. departments.

A good thing to keep in mind when you subnet your address is to leave plenty of spare addresses for feature growing.

There is lots of thinks you will need to think about it here for example which routing protocol you will choose and do you need to create stub areas, are you gonna use backup lines and in which sites , the speed of links and do you need to apply QOS because the customer might have lots of VOICE traffic. What security features you will apply to network.

As you can see there is lots of thing you can do here and it all depends on what the customer wants and how much he is willing to pay

BTW if you placed your question in
الاتصالات والشبكات section
you might get better response because this section is mainly for CISCO academic discussion while the other one is for practical and technical discussion
It just a tip and it is up to you