The number of the locally defined ISAKMP policy
used to establish the IPSec IKE Phase-1 Tunnel.
This is the number which was used on the crypto
command. For example, if the configuration command
was:
==> crypto isakmp policy 15
then the value of this object would be 15.
If ISAKMP was not used to establish this tunnel,
then the value of this object will be zero.