In this mode, you can configure an IP Security (IPSec) transport profile, which is used for Layer 2 Tunneling Protocol (L2TP) over IPSec connections.
From the Global Configuration mode, type ipsec transport profile, the profileName, virtual-router vrName, ip address ipAddress, and press Enter.
host1(config)#ipsec transport profile secureL2tp virtual-router default ip address 0.0.0.0 host1(config-ipsec-transport-profile)#? application Configure the application type that is protected by the l2tp 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 lifetime Configure the renegotiation time local Configure local endpoint of the transport connection log Configure logging settings macro Run a CLI macro no Negate a command or set its default(s) pfs Configure perfect forward secrecy run Run an exec mode command (alias command do) sleep Make the Command Interface pause for a specified duration transform-set Configure the transform set used by ipsec transport profile