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07-23-2007 04:25 AM - edited 03-03-2019 05:59 PM
Hi
I need point-to-multipoint tunnels for a virtual overlay. Encryption is not necessary as the transport network is a corporate network and no internet. I also don't need the ability of direct spoke to spoke communication. At the moment I'm working with GRE point-to-point links, but the config on the HUB starts to look a bit crowded, so I would prefer a point to multipoint technology.
Any help is welcome, and a will be graded.
Best regards
Simon
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07-23-2007 04:47 AM
Yes, in fact it's enough to not configure "tunnel protection" under the tunnel interface and voila, crypto-less DMVPN.
Hope this helps, please rate post if it does!

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07-23-2007 04:35 AM
Hi Simon,
Here is the great document to configure DMVPN.
http://www.cisco.com/application/pdf/en/us/guest/products/ps6658/c1161/cdccont_0900aecd80313c97.pdf
Regards,
Dharmesh Purohit
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07-23-2007 04:41 AM
Hi Dharmesh
Thanks, but the question is if that also works without IPSec? I don't want to add this unnecessary processing burden on the HUB router.
Simon

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07-23-2007 04:47 AM
Yes, in fact it's enough to not configure "tunnel protection" under the tunnel interface and voila, crypto-less DMVPN.
Hope this helps, please rate post if it does!
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07-23-2007 04:40 AM
Hi,
I think the DMVPN can be used without encryption. Take a look to this link: http://www.cisco.com/application/pdf/en/us/guest/products/ps6658/c1161/cdccont_0900aecd80313c9d.pdf
Hope it helps,
Krisztian
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07-23-2007 04:49 AM
Hi
Thank you all for your help, I will now go to my lab and try it out. And thank you for this fast replies, I didn't even hade time to walk to the coffee machine!
I will grade you when it works :-)
Best regards
Simon

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07-23-2007 08:34 AM
It will work.
Just don't do like us today spending a lot of time because the router was learning the tunnel destination address via routing inside the tunnel. P-t-p tunnel will warn you about, but a multipoint will not!
thanks for the nice rating and good luck!
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07-23-2007 11:42 AM
It worked!!!
Now I have to change all my tunnels to GRE/mGRE with NHRP. Thank you so much, you saved my day. It was crazy how fast I got an answer on this forum today.
Simon
