[c-nsp] SD-WAN design for large scale

[omar parihuana]

 Guys I've just read the follow document:

https://www.cisco.com/c/en/us/solutions/collateral/enterprise-networks/sd-wan/white-paper-c11-743108.html


So i am asking about the IPsec tunnel scalability in SD-WAN large
deployments. One benefit of L3VPN in MPLS are the full mesh connectivity.
>From point of view of CE one default route could be enough. Now in SDWAN
data plane if I want a full mesh topology a lot of IPsec tunnels are
established... maybe I am wrong but I will expect n(n-1)/2 IPsec Tunnels
(without consider the second path) then for example if I have 300 branch I
could expect 37350 tunnels... really? So hub-and-spoke will be the
solution... comments please... maybe it is time to say goodbye to full mesh
in SD-WAN deployments?

-- 
Omar E.P.T
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