Can you have several strategies of crypto isakmp on a router?

I have a router 1841 as a hub for several IPSec tunnels. I have a single ISAKMP policy that looks like this:

crypto ISAKMP policy 1

BA 3des

preshared authentication

Group 2

isakmp encryption key * address x.x.x.x

isakmp encryption key * address y.y.y.y

isakmp encryption key * address z.z.z.z

I want to start using AES as the encryption ISAKMP protocol, but I can't be there to change the other ends of all other tunnels. Can I create an another crypto isakmp strategy 2 and just put the pre-shared key for new connections in this one while I'm migration?

Thank you

Chris

Chris

You can have several strategies of isakmp on your router. The router will run through them in order until it finds a match. If you just need to add a new policy for isakmp with a number of different sequence, for example.

crypto ISAKMP policy 2

BA aes

AUTH pre-shared

Group 2

This will not affect your original isakmp policy.

Not sure what you mean by putting the pre-shared 'under' the isakmp policy. The key is not related to any person isakmp policy - you can see that the configuration you specify above.

All you need to do to switch is to configure isakmp on your router 1841 strategy and then move the remote as and when you can. Those that you changed uses AES, you have not yet changed that will continue to use 3DES.

HTH

Jon

Tags: Cisco Security

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