supported vs IPSec VRF taking crypto maps for several tunnels

Hi all!

I came to know that we can use the same public ip address for the creation of several tunnels to different websites using crypto-cards featuring many lines each representing a reference to a particular tunnel and using vrf aware IPsec, but I would like to know what are the differences / advantages / cautions.

Thanks for your time

Murali.

Murali

That I understand the feature essentially allows you to have multiple IPSEC tunnels and traffic in the tunnel that is to say. source and destination IP of the high-end devices can be in different VRF.

So it works mainly with the MPLS VPN IE. If you had several MPLS VPN each with their own VRF you can then run ISPEC tunnels on the MPLS network and when packets are received, they are automatically in the correct VRF.

You could not do that normal crypto cards IE. You can cancel again several IPSEC tunnels on a public IP address but then everything would be traffic in the same global routing table.

If the benefit is basically the same that you get with any VRF installation IE. logical separation of traffic on a single device.

Can't really say much about the warnings as I've never used it but there are some restrictions.

See this link for more details-

http://www.Cisco.com/c/en/us/TD/docs/iOS-XML/iOS/sec_conn_ikevpn/configuration/XE-3s/asr1000/sec-IKE-for-IPSec-VPNs-XE-3s-asr1000-book/sec-VRF-aware-IPSec.html

Jon

Tags: Cisco Security

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