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How to do the link between the different switch.

Hello,
I have an architecture as below:
SW1,2,3,4 are on different bay and have Giga connection.
SW1x,2x,3x,4x has FastEthernet connection.

SW1 SW2 SW3 SW4
| | | |
SW11 SW21 SW31 SW41
| | |
SW12 SW22 SW32
| |
SW13 SW33

I want to know what is the best way to do the connection between each switch using the spanning tree protocol. The more secure and redundant way and no speed loose.
Each SW is a different site linked by fiber

|----------------------------------------------------------------------------------|
SW1 |----------- SW2 |---------- SW3 |-------- SW4 |
| | | | | | | |
SW11 | SW21 | SW31 | SW41 |
| | | | | | |-------|
SW12 | SW22------ SW32 |
| | | |
SW13---- SW33----------

OR

|--------------------------------------------------------------------------------|
SW1 ---------------- SW2 ----------------- SW3------------------ SW4 |
| | | | |
SW11 SW21 SW31 SW41 |
| | | |-----|
SW12 SW22 SW32
| |
SW13 SW33

Or have you better proposition to optimisize the network.
What is the advandtage and disadvantage of each connection.

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jjmartineziii

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croustimiel

ASKER

But with the first solution i loose the benefits of the Gigabit link between each bay.
Because on the bay the different swith are linked by 100Mbit links.

Or can I link as below on each bay or other solution ?
Gbit Gbit Gbit
|-----------SW1----------------------------------SW2-------------------|
| / | \ Mbit / | \ |
| SW11 SW12 SW13 SW21 SW22 SW23 |
|----------------------------------------------------------------------------|

What can I use to have more security and performance. Or an other solution.
For example what is preconised by Cisco to link differnt bay and stack switch ??????

croustimiel

ASKER

No proposition to my question ??