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Best way to trunk Cisco 3560-X switches


I currently have 4 Cisco 3560-X switches.  1 is Layer 3 enabled and is used as my core switch.  The other three are POE+ and are used as my access switches.

As of right now, I have three etherchannels comprised of two ports each, and each etherchannel on the core switch connects to one of the access switches.

I am at a quandry because I would like to consider connecting them via 10 gig uplinks.  The problem is that the 3560-X can only have two 10 gig SFP+ ports per switch.

So that means I would have to use a cascading method, connecting the core switch to the first access switch, then the first access switch to the second, etc.

Is 10 gigabit that much faster that I would not need to worry about the extra hops the data would take from switch to switch in a cascade configuration?

Keep in mind, everything is running great as configured and the amount of data passing from the core switch to the access switches is not overwhelming the regular 2 gb etherchannels I currently have setup.

I just want to know for future consideration.

Thanks so much!
2 Solutions
Don JohnstonInstructorCommented:
As with all design issues, there's rarely a "right" design. If it works and the performance is acceptable, then it's a good design.

That said, I would leave things as they are. If you start overwhelming the existing uplinks, daisy chaining them wouldn't help.

When the uplinks do become oversubscribed, the best solution is to replace your existing core with a switch that supports multiple 10g links and connect your access switches with 10g (or even 20g etherchannel) links.
I agree with Don. If it works leave as its. You are running as a hub and spoke config, so not spanning tree worries. If you do go with the ten gig, you would be best to daisy chain with the last switch connect back to the core, so a logical loop, thus spanning tree will be needed, and that opens up another set up possible issues.
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