Network Question regarding layer 3 switch and mixing manufacturers

Hi Experts.     My network currently consists of one layer 3 switch which does the routing on my network.     And approx 6 layer 2 switches for end points.    Currently all are Allied switches.     We need to add another 48 port switch to our network.     The question is if I add another layer 3 switch from a different manufacturer... for example juniper will I have issues?    What I mean is VLAN configurations standard between manufactures so if I have 4 or 5 VLAN's now and create on the new switch is it all compatible?    Also does introducing another layer 3 switch complicate things?  Or will it be the same as long as I don't configure routing on the new switch?

Sorry if that does not make complete sense describing my questions as best I can.
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Zoldy2000Asked:
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Don JohnstonInstructorCommented:
The question is if I add another layer 3 switch from a different manufacturer... for example juniper will I have issues?
Only if you want to run a proprietary routing protocol or one vendors implementation of it is different from the other.  

But realistically, no.  You shouldn't have any problems.  It's done all the time.
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atlas_shudderedSr. Network EngineerCommented:
The only cautionary that I would note is if you mix and match your environment, you run the risk of vendors playing "the other guy" game if you start running into an issue you have to engage them on.  Otherwise, to Don's point, as long as you aren't running proprietary protocols (EIGRP, etc.) then there shouldn't be an issue.
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Zoldy2000Author Commented:
thanks about mixing brands.   how about the question  of introducing another layer 3 switch into the environment?
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Don JohnstonInstructorCommented:
No problem with that either as long as you consider the topology.

Without knowing why you're adding an additional layer 3 switch and where it will be located, it's rather hard to say if it's a good idea or not.
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Zoldy2000Author Commented:
I am adding another layer 3 switch simply because the performance ratings were better,    No routing is required on this switch.
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atlas_shudderedSr. Network EngineerCommented:
So you are adding a layer 3 switch but planning to run it only at layer 2 correct?
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Zoldy2000Author Commented:
That is correct running only on layer 2
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atlas_shudderedSr. Network EngineerCommented:
Then no difference.  Being a layer 3 switch only means it is capable of routing, etc.  This does not come into play until you actually begin to configure it for layer 3 services, at which point all the caveats mentioned above will apply, as well as any environmental/configuration decisions/concerns.
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Zoldy2000Author Commented:
Thanks
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