Allen,

The output of show cry isakmp sa simply tells you that an Ipsec tunnel has been successfully create between 172.72.72.238 as the source tunnel point and destination 192.168.1.5 tunnel end point.

Created 1 - means the isakmp SA was built successfuly.

QM_IDLE state means to me this tunnel is UP and the IKE SA key exchange was successfull, but is idle, it remains authenticated in a (QM) quiescent state but active.

Have a look at this two links to learn all about Ipsec and those commands

http://www.cisco.com/en/US/tech/tk583/tk372/technologies_tech_note09186a0080094203.shtml

http://www.cisco.com/en/US/docs/ios/security/command/reference/sec_s3.html#wp1116340

Opps !!! sorry Jon.. pressed entered key, but as usual we both agree :-)

Rgds

Jorge