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Is a direct link between two PFRv3 DC's absolutely required?

Hi Everyone,

 

Is a direct link between two PFRv3 DC's absolutely required? I.e. a link not via a BR between the HUB DC and Transport DC. As per this image from one of the online guides.

 

IWAN Design Guide Image.PNG

 

I've found some conflicting info on this so I just wanted to try and clear this up.. 

 

Thanks a lot

Matt

 

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Beginner

Re: Is a direct link between two PFRv3 DC's absolutely required?

I am also trying to figure out if your are running iwan ver 2.2 and you do not have to use DCI link would you still want to use them if you could? How will Master Controller be configured as there are not DMVPN off MC only on HUB Border Routers?

 

If someone could answer OP it would be nice to get real world example of using interdc.

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