Components and cables to design/build a network

Tags:
Cables
Data transfer
Network
Network design
Routers
Switches
Hello there,

I would like to design-build a network for a small company (about 80 employees). The company is divided in 3 sections which are: designers (30 employees), sales (30 employees) and administrator/marketing (15 employees). Also there are 3 managers and a CEO.

What components do I need to build this network (router, switches, hubs) and of course cables?

Some Requirements:

For Sales department: data transfer rate about 50Mbps

For Administrators department: data transfer rate about 10Mbps

For Designers department: data transfer rate about 300Mbps



Software/Hardware used:
routers, switches, hubs

Answer Wiki

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Sounds like a great undertaking…

1) Good design states that you should plan for around 10-25% growth, so 80 users will mean you’ll need about 100+ potential “network connections” (80 + 25% (20) = 100)

2) Divisions = VLANs = Subnets: If you wish to segregate your Admin, Sales and Design folks from being able to fully acess each others data, then you’ll need to set up a seperate VLAN / Subnet for each department (break out that VLSM)

3) Equipment needed:
– Forget about hubs, they are antiquated and cause more problems than they solve in networks and wont meet your through-put requirements.
– Switches are a must. 80+ user connections, VLAN/subnet segregation (and even some PoE) are what switches live for. In your case, a few 48-port or multiple 24-port switches would be ideal (PoE if you ever go with VOIP)
– Router – Also a must: its how you get all your users from the Internal LAN to the Internet, how you allow necessary traffic (DNS, DHCP, Voice) to flow between VLANs/Subnets, and how you filter unwanted traffic between the same
- Cabling – Kind of a given: Standard Cat5/6 will do you nicely. If the departments are geographically seperate, and there is cause for it, Fiber works too

4) To meet all of your data rates, allow for growth and provide some cushion for those data usage spikes, Gigabit Switches / NICs are best – you can even “aggregate” links between switches for a nice little 2-8Gigbit inter-switch “trunk”

As always, the best, honest answer for any Network design question is: “It Depends”.

Lastly, Fit your design to meet not only current requirements, but allow for growth (VOIP, wireless, Tele-commuters, more users, more servers, Applications, etc)

Discuss This Question: 8  Replies

 
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  • jinteik
    for starters on the rough you will need cat 6 cables, router for your internet, maybe 3 48 1gb port switch.
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  • AppliedInformatics
    Also in the Designers department i would like to build a vlan. Furthermore the distance of the cables in sometimes should be more than 100m.
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  • jinteik
    you can actually do alot of things, like vlan the 3 departments, add shared printer, add file sharing server and etc.. and yes, the cables should not be more than 100m
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  • AppliedInformatics
    And how can i solve the problem with the distance without reducing the network performance? Because at least in one case I have problem and the distance is more than 100m from the serviceroom to the end station.
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  • AppliedInformatics
    Thank you very much Sixball. Your answer was very helpful! So in this case you recommended a Hierarchical Network Design or a Flat LAN Topologie?
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  • Sixball
    As small as this organization is, you could get a way with a collapsed Distro/Core solution (more or less flat) Again, it depends on how much growth you intend to plan for. Cant go wrong with doing it right the first time...
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  • Acknak
    what is the distance of cable runs? since you will need more than one switch, you can locate intermediate telecom closets in locations that will reach each group. you want your intermediate TC's to be a place that can be locked and secure. I'd recommend fiber to tie the switches and router together. don't forget the firewall. You specified some data speeds. Are those inter-department or are those required speeds to the internet? What is the aggregate bandwidth you need for your internet connection? Are there now, or will there be, branch offices?
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  • Acknak
    I would also recommend doing a drawing to keep your network clean. I use Microsoft Visio, but I have also used a free program called "Dia" in the past, which is similar. When it comes to setting up routers, firewalls, and switches, having a drawing next to you helps a lot.
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