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What is the difference between 'SD-WAN Layer 2 and Layer 3 routing - general' vs Advanced one?



Can you please explain the main differences between the 'SD-WAN Layer 2 and Layer 3 routing - general' and 'Advanced SD-WAN Layer 2 and Layer 3 routing - general' features?

Thank you.

ITCS user
22 Answers

author avatar
Real User

An interesting question is that I haven't seen an SD-WAN device that does not require an IP address at the edge. 

You can connect your edge device to a layer 2 service (such as MPLS or VPLS), so we can assume this is the L2 methodology you are referring to. 

However, you will still be required in most cases to apply an IP address so the solution would technically be seen as L3. Give that idea, also connecting an internet service to the same SD-WAN edge device would give you both L2 and L3 connectivity, but all L3 routing. Think of it this way: routing is done at L3.

The definition of Advanced Routing appears to be vendor-specific, where Cisco will tout DNA as being their Advanced SD-WAN with security. Other vendors may have different services they provide to define Advanced SD-WAN.

author avatar
Community Manager

Hello @MichaelZhang, @Thameem Ansari and @Dániel Halmai

Would you mind helping @TomTran ​with this question? 

Thank you!​

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