IPsec, GNS3 and CCP

Hello.

I am configuring a VPN IPsec tunnel between two routers in GNS3 via Cisco Config teacher for my studies.

I already did some research. While they inspected tutorials, rip, ospf or eigrp is always configured first between routers before proceeding with the configuration of IKE phase 1 and phase 2. The link below is an example.

http://commonerrors.blogspot.com/2011/09/site-to-site-VPN-CLI-configuration-on.html

I watched the video of Keith Barker of CBT for "IPsec Site to Site VPN" and noticed that it did not need to configure routing between two sites.

He used Cisco CP for the entire configuration which crossed directly in IKE ph1 and ph2 configs and no routing was involved.

This is the topology.

Is it really necessary to configure routing first?

How can I emulate the internet connection between R1 and R2 using GNS3?

Thanks in advance.

They don't necessarily need to know routes of eachother, but these networks are to be sent to the WAN interface, either through a default route or the more specific routes. When traffic goes out one interface with a card encryption applied, it will then match the interesting traffic and encrypting through the tunnel.

Hope that clarifies things.

Kind regards

Mike

Tags: Cisco Security

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    Mahesh.

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    https://learningnetwork.Cisco.com/docs/doc-2457

    It's the best solution we currenty have

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    --
    Don't stop once you have upgraded your network! Improve the world by lending money to low-income workers:
    http://www.Kiva.org/invitedBy/karsteni

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