Cisco IPSec VPN Site to site backup link ?
HI Cisco Experts ,
I need solution for this scenario .....
Head Office : has Cisco router 2821 with ADSL and 3G connection
Branch : has Cisco Router 2801 with ADSL and 3G Connection
and i make /First connection / IPsec VPN site to site Over ADSL Link and
/second connection / IPsec VPN site to site over 3G Link
i need way to make IPsec Over ADSL as Main Link , when ADSL link Fail , the 3G connection automatically
established as Backup link ...
Please advice what to do , and give me Configuration Example for such this Scenario
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ASKER
Thanks for your answer
can you give me link ( Configuration Example )
ASKER
Thanks @ Sanjeevloke
can you give an example ... more specific
thanks
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The above config is of one side ...u can do it for other side ...
1) Bring Ipsec up in that allow GRE packets to flow .
1) Bring Ipsec up in that allow GRE packets to flow .
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A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.
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I would suggest a solution GRE over IPSEC .
Here u create a GRE tunnel & embed it in IPSEC.
Create a two loopbacks at both end ,create two seprate crypto maps.
The two GRE tunnels should have source and destination respected to WAN IPS.
Loopback IP should be used as matching traffic in ACL for IPSEC ...
Once GRE are up ,By static routes you can manipulate routes.