Title

  Test IKEv2.EN.I.1.2.6.15: Rekeying an IKE _SA while Closing an IKE_SA
  Part A: (BASIC)


Purpose

  To verify an IKEv2 device properly handles simultaneous closing and rekeying an IKE_SA.


References

  * [RFC 4718] - Sections 5.11.10


Test Setup

  * Network Topology
      Connect the devices according to the Common Topology.
  * Configuration
      In each part, configure the devices according to the Common Configuration.
      In addition, set IKE_SA Lifetime to 30 seconds and set CHILD_SA Lifetime to 300
      seconds.
  * 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, SK {IDr, AUTH, N, SAr2, TSi, TSr})
    |                    | (Packet #2)
    |                    |
    |                    * wait until CHILD_SA expires
    |                    |
    |------------------->| INFORMATIONAL request (HDR, SK {D})
    |                    | (Judgement #3)
    |                    |
    |<-------------------| CREATE_CHILD_SA request (HDR, SK {SA, Ni})
    |                    | (Packet #3)
    |------------------->| CREATE_CHILD_SA response (HDR, SK {N(NO_PROPOSAL_CHOSEN)})
    |                    | (Judgement #4)
    |                    |
    V                    V
N: USE_TRANSPORT_MODE
Packet #1 See Common Packet #2
Packet #2 See Common Packet #4
Packet #3 See Common Packet #11
  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 to the NUT
     6. Observe the messages transmitted on Link A.
     7. TN1 transmits a CREATE_CHILD_SA request to rekey an IKE_SA.
     8. 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 6: Judgment #3
       The NUT transmits an INFORMATONAL request to close an IKE_SA.
       Step 8: Judgment #4
       The NUT responds with a CREATE_CHILD_SA response to a CREATE_CHILD_SA reqest
       to rekey an IKE_SA. The CREATE_CHILD_SA response includes a Notify payload of type
       NO_PROPOSAL_CHOSEN.


Possible Problems

  * Each NUT has the different lifetime of SA.