DMVPN Support

[Siham]

Hi,

My question is why the Cisco 3850 doesn't support the DMVPN.

Thanks.

[Seb Rupik]

Hi there,

The 3850 is a switch.

DMVPN is a router function.

Cisco doesn't like function cross-over between product families!

cheers,

Seb.

[Siham]

Hi Seb,
Thanks for your feedback.
I’m asking that because DMVPN is based on combination of protocols (MGRE, Routing protocols, NHRP, Ipsec..) and since the IP services support the Routing protocols (like a router) I want to know what block the support of the DMVPN in this case? is it the Ipsec encryption or what exactly?
BR.
Siham

[Seb Rupik · Accepted solution]

Keep in mind that cisco is in the business of shifting boxes (and software licenses too). If they produced a single box that ruled them all this would impact the selling of lots of other boxes!!

With that in mind, the different software architectures (IOS, XE, XR, NX-OS, etc) will have varying capabilities which are then in turn mated with very specific hardware. Chances are a 3850 could run DMVPN but it would probably be run all in CPU and have terrible performance.

cheers,

Seb.