GRE Tunnel resolve our problem

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Sep 15th, 2009
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1. There is a one service provider cloud of VSAT & we are using private ip; this same ip used by another client also. So please suggest whether i can send my that ip address through GRE tunnel. Or

2. can we go for double natting one at my branch office & again nat that ip at head office end. Pls revert me asap.

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rahul.jadhav Wed, 09/16/2009 - 07:28
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Hi Andrew,

Thax for reply.

1. I am sending the attachment with diagram.Here i am having 2 same networks in my cloud.

2. So for one existing lan n/w of R5 we r advertising as it is & for my new lan n/w which of R4 i create a tunnel in bet R1 & R4 whether it is possible to work or not pls confirm.


Yes it is possible - you just create a GRE tunnel with the source & destination's of the tunnel as the IP addresses of the serial interfaces, Give the tunnel itself a /30 IP address (not being used anywhere else) then configure either a dynamic routing protocol or static routes.


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