TechStop » DMVPN http://itknowledgeexchange.techtarget.com/techstop Tue, 26 Feb 2013 16:47:16 +0000 en-US hourly 1 DMVPN – Not Just for Branch-to-Branch http://itknowledgeexchange.techtarget.com/techstop/dmvpn-%e2%80%93-not-just-for-branch-to-branch/ http://itknowledgeexchange.techtarget.com/techstop/dmvpn-%e2%80%93-not-just-for-branch-to-branch/#comments Fri, 30 Sep 2011 13:05:05 +0000 Joshua Wood http://itknowledgeexchange.techtarget.com/techstop/dmvpn-%e2%80%93-not-just-for-branch-to-branch/ Hi all, recently I have the opportunity to work with a client that needed a way to get from their branches to their HO securely but without knowing the IPs of the branches. This was complicated by the fact that the branches were using DHCP IPs for their Internet connections at the branches. The HO end-points didn’t have a static way of identifying the branches. This is where DMVPN works well.

The DMVPN technology gives you a method of connecting unknown end-points to the HO VPN end-points securely because the branches will “dial home”. The HO will create the VPN connection, tunnel the traffic across the now encrypted link and even exchange packets for a dynamic routing protocol like EIGRP. This allows you to dynamically add and remove branches without manually creating IPSec tunnels AND the routing gets updated automatically. Quite nice

Until next time,
TechSto (JW)

]]> http://itknowledgeexchange.techtarget.com/techstop/dmvpn-%e2%80%93-not-just-for-branch-to-branch/feed/ 0 DMVPN for VoIP – Branch-to-Branch Communication http://itknowledgeexchange.techtarget.com/techstop/dmvpn-for-voip-%e2%80%93-branch-to-branch-communication/ http://itknowledgeexchange.techtarget.com/techstop/dmvpn-for-voip-%e2%80%93-branch-to-branch-communication/#comments Sun, 25 Sep 2011 22:51:17 +0000 Joshua Wood http://itknowledgeexchange.techtarget.com/techstop/dmvpn-for-voip-%e2%80%93-branch-to-branch-communication/ Hi all, VoIP (voice over IP) is hot these days. It isn’t as sexy as some of the emerging technologies but it still being deployed at an ever increasing rate. One of the challenges with VoIP is how to allow your branches to make calls between one another without first having to go the head office. Well, DMVPN is one answer that can really work well for companies that have that sort of a need. A national car dealership where dealerships in the same city or across the country that consistently need to talk to each other about parts or availability of stock would need such a feature.

DMPVN allows you to create a template that allows the inter-branch traffic to be sent across IPSec without having to create a VPN tunnel from each branch to each branch. In a company of 10 sites could easily be 100 independently configured IPSec tunnels. Check out the links below to get you started and then check back in a bit for some more info on the topic.

Until next time,
TechStop

General DMVPN Info: http://www.cisco.com/en/US/products/ps6658/index.html
Routing Protocols Across DMVPN: http://www.cisco.com/en/US/tech/tk583/tk372/technologies_configuration_example09186a008014bcd7.shtml

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