Emily,
Please refer the below URL for the ISAKMP key encryption
http://www.cisco.com/en/US/customer/tech/tk583/tk372/technologies_configurat
ion_example09186a00801f2336.shtml
Basically you have to enter two commands
key config-key password-encryption [master key]
password encryption aes
The master key is not stored in the router configuration and cannot be
seen or obtained in any way while connected to the router. After these
commands, the password will be encrypted. Please note, that you don't
have to enter the password with the option "6", but with "0".
So if you configure a pre-shared key, you may enter the following:
crypto isakmp key 0 apple address 1.1.1.1
and the show running configuration line would look like
crypto isakmp key xxx address 1.x.x.1
The option "6" says, it will be the encrypted password afterwards, not to encrypt the password.
I hope it helps. Please refer the below URL for additional details
http://www.cisco.com/en/US/customer/products/sw/iosswrel/ps5207/products_fea
ture_guide09186a00801a7a7a.html
Regards,
Arul
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