Re: private network - VLAN vs separate switch

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Thanks for all the help. Can the moving over from VLAN to separate
switches be done on a live cluster? Or does there need to be a down
time?

-Sreenath

On 11/26/14, Kyle Bader <kyle.bader@xxxxxxxxx> wrote:
>> For a large network (say 100 servers and 2500 disks), are there any
>> strong advantages to using separate switch and physical network
>> instead of VLAN?
>
> Physical isolation will ensure that congestion on one does not affect
> the other. On the flip side, asymmetric network failures tend to be
> more difficult to troubleshoot eg. backend failure with functional
> front end. That said, in a pinch you can switch to using the front end
> network for both until you can repair the backend.
>
>> Also, how difficult it would be to switch from a VLAN to using
>> separate switches later?
>
> Should be relatively straight forward. Simply configure the
> VLAN/subnets on the new physical switches and move links over one by
> one. Once all the links are moved over you can remove the VLAN and
> subnets that are now on the new kit from the original hardware.
>
> --
>
> Kyle
>
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