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Best Network Design for a 2 Floor Building

Last Modified: 2012-02-18
Dear All,

I would like to design & install lan cabling on a 2 Floor Building.
Each Floor will have computers, cisco ip phones, network printers & network photocopiers, access points.
Ground Floor will have 2 servers, 1 firewall, 1 antispam and 1 cisco call manager.

*Installing one switch on the Ground Floor would require all Ethernet cables being passed from one floor to another in order to be connected to the switch.

*On the other hand installing a switch on each Floor would minimize the required cables needed to pass from each floor.(I am attaching you a drawing made for that case)

Q1) In my case what network design you would follow? (one of the above or another?)

Q2) Kindly refer the prons and cons of each network design you suggest

Q3) which are the available connection types between switches and which is the best (for example fiber channel)

Q4) In case of installing a switch on each floor how this will affect network speed?
For example if Client 1 sends a packet to Client 7 is as fast as connecting both
of them on a same switch?

Thanks for your time.
Watch Question

Sergsystem administrator

(Sorry for my English)
You must comply with international standard ISO/IEC 11801 (preview http://webstore.iec.ch/preview/info_isoiec11801%7Bed2.0%7Den.pdf).
Also look at this site http://www.siemon.com/us/standards/
Network construction is a science. At the forum it is difficult to study.
James HIT Director
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Creating a backbone with fiber optics is a good way to go, with redundant cabling. If there's a need for VLAN configuration use managed switches.
Top Expert 2010

Don't take this the wrong way, but if you have to ask such a basic question, then you aren't qualified to do the job.   No way are you up on fire codes, plenum cabling, when you need to use conduits, and electrical standards.  Often the infrastructure limits your choices.  

You probably have twisted pairs between floors that were run for telephony, and the whole point of using CAT-x wiring is to take advantage of telephony wiring.  A pro would assess what is available and design something reasonable that DOESN'T require dealing with running new cabling between floors.  

If this is a new building, then just dictate they run some optical cabling between the floors, run several sets in different locations, just in case ... then let the electricians handle it.
Manager of IT
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Dear gsmartin,

Could you be more specific about the type of equipment that is required for Individual Distribution Facilities?

In case using Switches on each floor, do you suggest daisy-chaining them (connect switch 1 to switch 2, switch 2 with switch 3 etc)
or is better connecting every switch directly to the switch that is installed to the MDF? (connect switch 2 to switch 1, switch 3 to switch 1 etc)
gsmartinManager of IT
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