Title

  Test IKEv2.EN.I.1.1.6.12: Creating an IKE_SA without a CHILD_SA
  Part A: (BASIC)

Purpose

  To verify an IKEv2 device can handles a failure of creating a CHILD_SA during the
  IKE_AUTH exchange.

References

  * [RFC 4718] - Sections 4.2

Test Setup

  * Network Topology
      Connect the devices according to the Common Topology.
  * Configuration
      In each part, configure the devices according to the Common Configuration.
  * Pre-Sequence and Cleanup Sequence
      IKEv2 on the NUT is disabled after each part.

Procedure

   NUT                  TN1
(End-Node)           (End-Node)
    |                    |
    |------------------->| IKE_SA_INIT request (HDR, SAi1, KEi, Ni)
    |                    | (Judgement #1)
    |<-------------------| IKE_SA_INIT Response (HDR, SAr1, KEr, Nr)
    |                    | (Packet #1)
    |                    |
    |------------------->| IKE_AUTH request (HDR, SK {IDi, AUTH, N, SAi2, TSi, TSr})
    |                    | (Judgement #2)
    |<-------------------| IKE_AUTH Response (HDR, N(NO_PROPOSAL_CHOSEN))
    |                    | (Packet #2)
    |                    |
    |<-------------------| INFORMATIONAL request (HDR, SK {})
    |                    | (Packet #3)
    |------------------->| INFORMATIONAL response (HDR, SK {})
    |                    | (Judgement #3)
    |                    |
    V                    V
  
 N: USE_TRANSPORT_MODE

Packet #1	See Common Packet #2
Packet #2	See below
Packet #3	See Common Packet #17

Packet #1: IKE_SA_INIT response

IPv6 Header	Same as the Common Packet #4
UDP Header	Same as the Common Packet #4
IKEv2 Header	Same as the Common Packet #4
N Payload	Next Payload	0
	Critical	0
	Reserved	0
	Payload Length	8
	Protocol ID	0
	SPI Size	0
	Notify Message Type	NO_PROPOSAL_CHOSEN (14)

  Part A: (BASIC)
     1. NUT starts to negotiate with TN1 by sending IKE_SA_INIT request.
     2. Observe the messages transmitted on Link A.
     3. TN1 responds with an IKE_SA_INIT response to the NUT.
     4. Observe the messages transmitted on Link A.
     5. After reception of IKE_AUTH request from the NUT, TN1 responds with an IKE_AUTH
         response with a Notify payload of type NO_PROPOSAL_CHOSEN to the NUT.
     6. TN1 transmits an INFORMATIONAL request with no payloads to the NUT.
     7. Observe the messages transmitted on Link A.

Observable Result

  Part A
       Step 2: Judgment #1
       The NUT transmits an IKE_SA_INIT request including "ENCR_3DES",
       "PRF_HMAC_SHA1", "AUTH_HMAC_SHA1_96" and "D-H group 2" as proposed
       algorithms.

       Step 4: Judgment #2
       The NUT transmits an IKE_AUTH request including "ENCR_3DES",
       "AUTH_HMAC_SHA1_96" and "No Extended Sequence Numbers" as proposed algorithms.

       Step 7: Judgment #3
       The NUT transmits an INFORMATIONAL Response followed by an Encrypted payload with
       no payloads contained in it.

Possible Problems

  * None.