Activates a crypto-list in the context of the interface on which the crypto-list is activated. Use no ip crypto-group to deactivate a crypto-list.
The command applies to the following interfaces:
Serial
FastEthernet
Dialer
Note:
This command applies also to the VLAN interface, but this option is not recommended.
Most IPSec VPN parameters cannot be modified if they are linked to an active crypto-list. To modify a parameter linked to an active crypto-list, you must first deactivate the list using the no ip crypto-group command in the context of the interface on which the crypto-list is activated.