In this mode, you can enter the manual key that a peer uses for authentication during the tunnel establishment phase.
From the Global Configuration mode, type ipsec key manual pre-share and the peerIPaddress, and press Enter.
host1(config)#ipsec key manual pre-share 10.10.1.1 host1(config-manual-key)#? default Set a command to its default(s) do Run an exec mode command (alias command run) exit Exit from the current command mode help Describe the interactive help system key Manually specify a key log Configure logging settings macro Run a CLI macro masked-key Enter a masked key (not for manual entry, show config generates) no Negate a command or set its default(s) run Run an exec mode command (alias command do) sleep Make the Command Interface pause for a specified duration