interconnection q

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May 26th, 2009
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i have 6 3560G-24TS switches that will go into 2-3 seperate racks. They each have 4 SPF ports. What would be the best way to connect them all? i am not real familiar with spanning tree and whatnot so not sure best way to connect them without creating loops and whatnot.


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Jeff,


That is a kinda "Which came first, the chicken or the egg" question!


Firsttopology do you want? Core<>Distribution<>Access


Do you want collapsed or full mesh connectivity?


Are you running ALL IP or some IP and mainly layer 2 to switchports?


Do you want to take advantage of STP - if so you need to think about how you want failover to occur?


Do you want to bundle the SPF connections together and have port-channels? What is your required load-balancing method?


HTH>

jefforamma Tue, 05/26/2009 - 08:22
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andrew,


i try to answer all your q's.


1. just read up on the differences of the 3 @ http://www.mcmcse.com/cisco/guides/hierarchical_model.shtml

based on that im between core and access.


2. not sure what collapsed or full mesh is. trying to find info.


3. all ip? see after steps for more info.


4. STP (had to look it up. didnt know it was spanning tree) :) yes i guess i would want that. i would like to have redundant paths for the switches.


5. not sure what bundling the channels is either. im assuming it is like teaming nics?


basically, i need to connect 2-3 racks together. they will have 2-3 switches per rack. its all windows servers. no vlans or anything, just all one subnet. i was not sure if i could just connect the 4 spf ports to the different switches for redundant pathing or if this would cause issues or not.

there would be 3 nics per server. 1 is for remote management, the other 2 would be teamed for reduncancy but i would like to plug them into different switches.


if you need more info let me know. or any more suggestions its appreciated.

jefforamma Tue, 05/26/2009 - 08:27
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there are 2 pix 515e firewalls (active/passive) that will be the outside world connection.


not sure on the wiring between racks. in the planning phase at the moment while evaluating data centers.

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