Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
Normally, L3 is more beneficial as it help avoids transmitting data across your MPLS unless it needs to. However, if your existing sites are only L2, a L2 MPLS allows it to be used as a simple extension of your L2 topology (i.e. you don't need to upgrade to routers or L3 switches).
