When i run debug on Cisco ASA i found following, also when tunnel is up i am seeing following messaged in debugging, not sure what is going on. I also had to mention the same ACL in the local policy for this to work. IKEv2 allows the security association to remain unchanged despite changes in the underlying connection. Do you had to apply some NAT config? The IKE_AUTH packet contains: ISAKMP Header(SPI/ version/flags), IDi(initiator's identity), AUTH payload, SAi2(initiates the SA-similar to the phase 2 transform set exchange in IKEv1), and TSi and TSr (Initiator and Responder Traffic selectors): They contain the source and destination address of the initiator and responder respectively for forwarding/receiving encrypted traffic. The first CHILD_SA is created for the proxy_ID pair that matches the trigger packet. Same in every possible way. Components Used The information in this document is based on these software and hardware versions: Internet Key Exchange Version 2 (IKEv2) Cisco IOS 15.1 (1)T or later This is reposted from the Networking Academy area since there were no replies. *Nov 11 19:31:35.873: IKEv2:Got a packet from dispatcher *Nov 11 19:31:35.873: IKEv2:Processing an item off the pak queue *Nov 11 19:31:35.873: IKEv2:(SA ID = 2):Request has mess_id 3; expected 3 through 7 *Nov 11 19:31:35.873: IKEv2:(SA ID = 2):Next payload: ENCR, version: 2.0Exchange type: CREATE_CHILD_SA, flags:INITIATORMessage id: 3, length: 396 Payload contents: SANext payload: N, reserved: 0x0, length: 152 last proposal: 0x0, reserved: 0x0, length: 148 Proposal: 1, Protocol id: IKE, SPI size: 8, #trans: 15 last transform: 0x3, reserved: 0x0: length: 12 type: 1, reserved: 0x0, id: AES-CBC last transform: 0x3, reserved: 0x0: length: 12 type: 1, reserved: 0x0, id: AES-CBC last transform: 0x3, reserved: 0x0: length: 12 type: 1, reserved: 0x0, id: AES-CBC last transform: 0x3, reserved: 0x0: length: 8 type: 2, reserved: 0x0, id: SHA512 last transform: 0x3, reserved: 0x0: length: 8 type: 2, reserved: 0x0, id: SHA384 last transform: 0x3, reserved: 0x0: length: 8 type: 2, reserved: 0x0, id: SHA256 last transform: 0x3, reserved: 0x0: length: 8 type: 2, reserved: 0x0, id: SHA1 last transform: 0x3, reserved: 0x0: length: 8 type: 2, reserved: 0x0, id: MD5 last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: SHA512 last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: SHA384 last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: SHA256 last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: SHA96 last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: MD596 last transform: 0x3, reserved: 0x0: length: 8 type: 4, reserved: 0x0, id: DH_GROUP_1536_MODP/Group 5 last transform: 0x0, reserved: 0x0: length: 8 type: 4, reserved: 0x0, id: DH_GROUP_1024_MODP/Group 2 NNext payload: KE, reserved: 0x0, length: 24 KE Next payload: NOTIFY, reserved: 0x0, length: 136 DH group: 2, Reserved: 0x0 *Nov 11 19:31:35.874: IKEv2:Parse Notify Payload: SET_WINDOW_SIZENOTIFY(SET_WINDOW_SIZE) Next payload: NONE, reserved: 0x0, length: 12 Security protocol id: IKE, spi size: 0, type: SET_WINDOW_SIZE *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: READY Event:EV_RECV_CREATE_CHILD *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):Action: Action_Null *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_INIT Event: EV_RECV_CREATE_CHILD *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):Action: Action_Null *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_INIT Event: EV_VERIFY_MSG *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_INIT Event: EV_CHK_CC_TYPE *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_IKE Event:EV_REKEY_IKESA *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_IKE Event: EV_GET_IKE_POLICY *Nov 11 19:31:35.874: IKEv2:%Getting preshared key by address 10.0.0.2 *Nov 11 19:31:35.874: IKEv2:% Getting preshared key by address 10.0.0.2 *Nov 11 19:31:35.874: IKEv2:Adding Proposal PHASE1-prop to toolkit policy *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):Using IKEv2 profile 'IKEV2-SETUP' *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_IKE Event: EV_PROC_MSG *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_IKE Event: EV_SET_POLICY *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):Setting configured policies *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_BLD_MSG Event: EV_GEN_DH_KEY *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_BLD_MSG Event: EV_NO_EVENT *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_BLD_MSG Event: EV_OK_RECD_DH_PUBKEY_RESP *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):Action: Action_Null *Nov 11 19:31:35.874: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_BLD_MSG Event:EV_GEN_DH_SECRET *Nov 11 19:31:35.881: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_BLD_MSG Event: EV_NO_EVENT *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_BLD_MSG Event: EV_OK_RECD_DH_SECRET_RESP *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):Action: Action_Null *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_BLD_MSG Event: EV_BLD_MSG *Nov 11 19:31:35.882:IKEv2:ConstructNotify Payload: SET_WINDOW_SIZE Payload contents: SANext payload: N, reserved: 0x0, length: 56 last proposal: 0x0, reserved: 0x0, length: 52 Proposal: 1, Protocol id: IKE, SPI size: 8, #trans: 4 last transform: 0x3, reserved: 0x0: length: 12 type: 1, reserved: 0x0, id: AES-CBC last transform: 0x3, reserved: 0x0: length: 8 type: 2, reserved: 0x0, id: SHA1 last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: SHA96 last transform: 0x0, reserved: 0x0: length: 8 type: 4, reserved: 0x0, id: DH_GROUP_1024_MODP/Group 2 NNext payload: KE, reserved: 0x0, length: 24 KE Next payload: NOTIFY, reserved: 0x0, length: 136 DH group: 2, Reserved: 0x0 NOTIFY(SET_WINDOW_SIZE) Next payload: NONE, reserved: 0x0, length: 12 Security protocol id: IKE, spi size: 0, type: SET_WINDOW_SIZE, *Nov 11 19:31:35.869: IKEv2:(SA ID = 2):Next payload: ENCR, version: 2.0 Exchange type:CREATE_CHILD_SA, flags:INITIATORMessage id: 2, length: 460 Payload contents: ENCR Next payload: SA, reserved: 0x0, length: 432, *Nov 11 19:31:35.873: IKEv2:Construct Notify Payload: SET_WINDOW_SIZE Payload contents: SANext payload: N, reserved: 0x0, length: 152 last proposal: 0x0, reserved: 0x0, length: 148 Proposal: 1, Protocol id: IKE, SPI size: 8, #trans: 15 last transform: 0x3, reserved: 0x0: length: 12 type: 1, reserved: 0x0, id: AES-CBC last transform: 0x3, reserved: 0x0: length: 12 type: 1, reserved: 0x0, id: AES-CBC last transform: 0x3, reserved: 0x0: length: 12 type: 1, reserved: 0x0, id: AES-CBC last transform: 0x3, reserved: 0x0: length: 8 type: 2, reserved: 0x0, id: SHA512 last transform: 0x3, reserved: 0x0: length: 8 type: 2, reserved: 0x0, id: SHA384 last transform: 0x3, reserved: 0x0: length: 8 type: 2, reserved: 0x0, id: SHA256 last transform: 0x3, reserved: 0x0: length: 8 type: 2, reserved: 0x0, id: SHA1 last transform: 0x3, reserved: 0x0: length: 8 type: 2, reserved: 0x0, id: MD5 last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: SHA512 last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: SHA384 last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: SHA256 last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: SHA96 last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: MD596 last transform: 0x3, reserved: 0x0: length: 8 type: 4, reserved: 0x0, id: DH_GROUP_1536_MODP/Group 5 last transform: 0x0, reserved: 0x0: length: 8 type: 4, reserved: 0x0, id: DH_GROUP_1024_MODP/Group 2 NNext payload: KE, reserved: 0x0, length: 24 KENext payload: NOTIFY, reserved: 0x0, length: 136 DH group: 2, Reserved: 0x0 NOTIFY(SET_WINDOW_SIZE) Next payload: NONE, reserved: 0x0, length: 12 Security protocol id: IKE, spi size: 0, type: SET_WINDOW_SIZE, *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):Next payload: ENCR, version: 2.0 Exchange type:CREATE_CHILD_SA,flags:RESPONDER MSG-RESPONSEMessage id: 3, length: 300 Payload contents: SANext payload: N, reserved: 0x0, length: 56 last proposal: 0x0, reserved: 0x0, length: 52 Proposal: 1, Protocol id: IKE, SPI size: 8, #trans: 4 last transform: 0x3, reserved: 0x0: length: 12 type: 1, reserved: 0x0, id: AES-CBC last transform: 0x3, reserved: 0x0: length: 8 type: 2, reserved: 0x0, id: SHA1 last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: SHA96 last transform: 0x0, reserved: 0x0: length: 8 type: 4, reserved: 0x0, id: DH_GROUP_1024_MODP/Group 2 NNext payload: KE, reserved: 0x0, length: 24 KENext payload: NOTIFY, reserved: 0x0, length: 136 DH group: 2, Reserved: 0x0 *Nov 11 19:31:35.882: IKEv2:Parse Notify Payload: SET_WINDOW_SIZENOTIFY(SET_WINDOW_SIZE) Next payload: NONE, reserved: 0x0, length: 12 Security protocol id: IKE, spi size: 0, type: SET_WINDOW_SIZE *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState:CHILD_I_WAITEvent:EV_RECV_CREATE_CHILD *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):Action: Action_Null *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState:CHILD_I_PROCEvent: EV_CHK4_NOTIFY *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState: CHILD_I_PROC Event:EV_VERIFY_MSG *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState: CHILD_I_PROC Event: EV_PROC_MSG *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState: CHILD_I_PROC Event: EV_CHK4_PFS *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState: CHILD_I_PROC Event: EV_GEN_DH_SECRET *Nov 11 19:31:35.890: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState: CHILD_I_PROC Event: EV_NO_EVENT *Nov 11 19:31:35.890: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState: CHILD_I_PROC Event: EV_OK_RECD_DH_SECRET_RESP *Nov 11 19:31:35.890: IKEv2:(SA ID = 2):Action: Action_Null *Nov 11 19:31:35.890: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState: CHILD_I_PROC Event: EV_CHK_IKE_REKEY *Nov 11 19:31:35.890: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState: CHILD_I_PROC Event: EV_GEN_SKEYID *Nov 11 19:31:35.890: IKEv2:(SA ID = 2):Generate skeyid *Nov 11 19:31:35.890: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState:CHILD_I_DONEEvent:EV_ACTIVATE_NEW_SA *Nov 11 19:31:35.890: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState: CHILD_I_DONE Event: EV_UPDATE_CAC_STATS *Nov 11 19:31:35.890: IKEv2:New ikev2 sa request activated *Nov 11 19:31:35.890: IKEv2:Failed to decrement count for outgoing negotiating *Nov 11 19:31:35.890: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState: CHILD_I_DONE Event: EV_CHECK_DUPE *Nov 11 19:31:35.890: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState: CHILD_I_DONE Event: EV_OK *Nov 11 19:31:35.890: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003 CurState: EXIT Event: EV_CHK_PENDING *Nov 11 19:31:35.890: IKEv2:(SA ID = 2):Processed response with message id 3, Requests can be sent from range 4 to 8 *Nov 11 19:31:35.890: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (I) MsgID = 00000003CurState: EXITEvent: EV_NO_EVENT, *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):Next payload: ENCR, version: 2.0 Exchange type:CREATE_CHILD_SA, flags:RESPONDER MSG-RESPONSEMessage id: 3, length: 300 Payload contents: ENCR Next payload: SA, reserved: 0x0, length: 272 *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_BLD_MSG Event:EV_CHK_IKE_REKEY *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_BLD_MSG Event: EV_GEN_SKEYID *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):Generate skeyid *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_DONE Event:EV_ACTIVATE_NEW_SA *Nov 11 19:31:35.882: IKEv2:Store mib index ikev2 3, platform 62 *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_DONE Event: EV_UPDATE_CAC_STATS *Nov 11 19:31:35.882: IKEv2:New ikev2 sa request activated *Nov 11 19:31:35.882: IKEv2:Failed to decrement count for incoming negotiating *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState:CHILD_R_DONEEvent: EV_CHECK_DUPE *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_DONE Event: EV_OK *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: CHILD_R_DONE Event: EV_START_DEL_NEG_TMR *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):Action: Action_Null *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003 CurState: EXIT Event: EV_CHK_PENDING *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):Sent response with message id 3, Requests can be accepted from range 4 to 8 *Nov 11 19:31:35.882: IKEv2:(SA ID = 2):SM Trace-> SA: I_SPI=0C33DB40DBAAADE6 R_SPI=F14E2BBA78024DE3 (R) MsgID = 00000003CurState: EXITEvent: EV_NO_EVENT. The vulnerability is due to incorrect handling of crafted IKEv2 SA-Init packets. 189067: *Aug 8 14:01:22.433 Chicago: IKEv2:Config data recieved: 189068: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Config-type: Config-request, 189069: *Aug 8 14:01:22.433 Chicago: IKEv2:IKEv2 responder - unsupported attrib unknown in cfg-req, 189070: *Aug 8 14:01:22.433 Chicago: IKEv2:IKEv2 responder - unsupported attrib unknown in cfg-req, 189071: *Aug 8 14:01:22.433 Chicago: IKEv2:IKEv2 responder - unsupported attrib unknown in cfg-req, 189072: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Error in settig received config mode data, 189073: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Auth exchange failed, 189074: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):: Auth exchange failed, 189075: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Abort exchange, 189076: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Deleting SA, 189077: *Aug 8 14:01:25.429 Chicago: IKEv2:Couldn't find matching SA: Detected an invalid IKE SPI, 189078: *Aug 8 14:01:25.429 Chicago: IKEv2:(SESSION ID = 0,SA ID = 0):Received Packet [From 2.2.2.2:4500/To 1.1.1.1:4500/VRF i0:f0], 189079: *Aug 8 14:01:25.429 Chicago: IKEv2:: A supplied parameter is incorrect, 189080: *Aug 8 14:01:28.429 Chicago: IKEv2:Couldn't find matching SA: Detected an invalid IKE SPI, 189081: *Aug 8 14:01:28.429 Chicago: IKEv2:(SESSION ID = 0,SA ID = 0):Received Packet [From 2.2.2.2:4500/To 1.1.1.1:4500/VRF i0:f0], 189082: *Aug 8 14:01:28.429 Chicago: IKEv2:: A supplied parameter is incorrect, 189083: *Aug 8 14:01:31.433 Chicago: IKEv2:Couldn't find matching SA: Detected an invalid IKE SPI, 189084: *Aug 8 14:01:31.433 Chicago: IKEv2:(SESSION ID = 0,SA ID = 0):Received Packet [From 2.2.2.2:4500/To 1.1.1.1:4500/VRF i0:f0], 189085: *Aug 8 14:01:31.433 Chicago: IKEv2:: A supplied parameter is incorrect. 4 Sep 18 2018 17:40:58 750003 Local:80.x.y.z:500 Remote:51.a.b.c:500 Username:51.a.b.c IKEv2 Negotiation aborted due to ERROR: Detected unsupported . Create an ACL in Policies > Local Policy > Access Control ListsPermit port 500I also have the Default Action as Accept in my POC.Copy the ACL name (CTRL C) youll need it for the next step. Router 1 verifies and processes the authentication data in this packet. My template for 'VPN Interface IPsec' looks like this: Then, this template is added under the Service VPN : I thought it was all working fine, however I now have a new problem.IKEv2 is working for Phase 1, but IPSEC is failing.For some reason the ISR4K is creating 16 SA's whilst Zscaler only support a maximum of 8 SA's, therefore the tunnel is currently unusable. Cisco Community Technology and Support Security VPN Remote Access IKEv2 Auth exchange failed 33016 5 2 Remote Access IKEv2 Auth exchange failed Go to solution mustafa.chapal Beginner 08-08-2018 01:52 PM - edited 03-12-2019 05:29 AM Hi, Uses certificates for the authentication mechanism. This is the CREATE_CHILD_SA request. Can you point specifically on the vManage how we can do that? Customers Also Viewed These Support Documents, Branch router, ISR4451-X, version 16.12.1b. IKEv2 Packet Exchange and Protocol Level Debugging, Technical Support & Documentation - Cisco Systems, Router 1 receives a packet that matches the crypto acl for peer ASA 10.0.0.2. description Cisco AnyConnect IKEv2 ip unnumbered GigabitEthernet0/0 tunnel mode ipsec ipv4 tunnel protection ipsec profile staff Take a break, you have now completed the main config on the router, and its time to move onto configuration relating to the client. Initiator starts IKE_AUTH exchange and generates the authentication payload. The sample requires that ASA devices use the IKEv2 policy with access-list-based configurations, not VTI-based. Looks like its working after I added the ACL to the outside interface. I'll log a TAC case next. I had the same Firebox and RADIUS server working for IPSec MUVPN, but not for IKEv2. this is due to 4.9 a lot of hash/cryptography where removed! I followed the guide and created the IPSEC interface on the service side instead of VPN0, unfortunately I'm getting a IKEv2 failure: IKEv2:% Getting preshared key from profile keyring if-ipsec1-ikev2-keyringIKEv2:% Matched peer block 'if-ipsec1-ikev2-keyring-peer'IKEv2:(SESSION ID = 0,SA ID = 0):Searching Policy with fvrf 0, local address X.X.X.XIKEv2:(SESSION ID = 0,SA ID = 0):Found Policy 'policy1-global'IKEv2-ERROR:Address type 1622425149 not supported. Router2 sends out the responder message to Router 1. It's in roadmap. These parameters are identical to the one that was received from ASA1. Thank You. As far as I'm aware that feature is not supported on cEdge platforms, you can only use IPsec tunnels on the Service Side VPN. The sample configuration connects a Cisco ASA device to an Azure route-based VPN gateway. Doesn't work for me. Find answers to your questions by entering keywords or phrases in the Search bar above. Select the " Show Advanced Settings " option on the top left and make sure the enable box is checked. IOS XE routers must source IPSEC interfaces from the Service side VPN (not VPN0), but also, it is necessary to add a inbound IPv4 ACL to the Interface in VPN0 to permit UDP 500 (IPSEC) and if using NAT UDP 4500 as well.After the tunnel is established you can add a IPv4 static route on the Service side with a next hop of the Tunnel interface to route traffic via the tunnel. All rights reserved. Note: In this output, unlike in IKEv1, the PFS DH group value appears as "PFS (Y/N): N, DH group: none" during the first tunnel negotiation, but, after a rekey occurs, the right values appear. Cisco recommends that you have knowledge of the packet exchange for IKEv2. Update: This was a version error, using wrong version of anyconnect, this has now been resolved. A Notify Payload might appear in a response message (usually specifying why a request was rejected), in an informational exchange (to report an error not in an IKE request), or in any other message to indicate sender capabilities or to modify the meaning of the request. Create VPN Gateway Policy (Phase1) To create a Phase1 VPN policy, go to Configuration -> VPN -> IPSec VPN and click on the " VPN Gateway " tab. 189035: *Aug 8 14:01:22.161 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):IKE Proposal: 1, SPI size: 0 (initial negotiation), AES-CBC SHA256 SHA256 DH_GROUP_2048_MODP/Group 14, 189036: *Aug 8 14:01:22.161 Chicago: IKEv2:(SA ID = 1):[IKEv2 -> PKI] Retrieve configured trustpoint(s), 189037: *Aug 8 14:01:22.161 Chicago: IKEv2:(SA ID = 1):[PKI -> IKEv2] Retrieved trustpoint(s): 'TP-self-signed-653483565', 189038: *Aug 8 14:01:22.161 Chicago: IKEv2:(SA ID = 1):[IKEv2 -> PKI] Get Public Key Hashes of trustpoints, 189039: *Aug 8 14:01:22.161 Chicago: IKEv2:(SA ID = 1):[PKI -> IKEv2] Getting of Public Key Hashes of trustpoints FAILED, 189040: *Aug 8 14:01:22.161 Chicago: IKEv2:Failed to retrieve Certificate Issuer list, 189041: *Aug 8 14:01:22.161 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Sending Packet [To 2.2.2.2:500/From 1.1.1.1:500/VRF i0:f0], Initiator SPI : 8A15E970577C6140 - Responder SPI : 0550071FA9DFE718 Message id: 0, SA KE N VID VID NOTIFY(NAT_DETECTION_SOURCE_IP) NOTIFY(NAT_DETECTION_DESTINATION_IP), 189042: *Aug 8 14:01:22.161 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Completed SA init exchange, 189043: *Aug 8 14:01:22.161 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Starting timer (30 sec) to wait for auth message, 189044: *Aug 8 14:01:22.429 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Received Packet [From 2.2.2.2:4500/To 1.1.1.1:500/VRF i0:f0], Initiator SPI : 8A15E970577C6140 - Responder SPI : 0550071FA9DFE718 Message id: 1, IDi NOTIFY(INITIAL_CONTACT) NOTIFY(Unknown - 16396) IDr AUTH CFG NOTIFY(ESP_TFC_NO_SUPPORT) NOTIFY(NON_FIRST_FRAGS) SA TSi TSr, 189045: *Aug 8 14:01:22.429 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Stopping timer to wait for auth message, 189046: *Aug 8 14:01:22.429 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Checking NAT discovery, 189047: *Aug 8 14:01:22.429 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):NAT OUTSIDE found, 189048: *Aug 8 14:01:22.429 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):NAT detected float to init port 4500, resp port 4500, 189049: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Searching policy based on peer's identity '10.5.1.70' of type 'IPv4 address', 189050: *Aug 8 14:01:22.433 Chicago: IKEv2:found matching IKEv2 profile 'FlexVPN', 189051: *Aug 8 14:01:22.433 Chicago: IKEv2:% Getting preshared key from profile keyring keys, 189052: *Aug 8 14:01:22.433 Chicago: IKEv2:% Matched peer block 'DYNAMIC', 189053: *Aug 8 14:01:22.433 Chicago: IKEv2:Searching Policy with fvrf 0, local address 1.1.1.1, 189054: *Aug 8 14:01:22.433 Chicago: IKEv2:Found Policy 'ikev2policy', 189055: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Verify peer's policy, 189056: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Peer's policy verified, 189057: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Get peer's authentication method, 189058: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Peer's authentication method is 'PSK', 189059: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Get peer's preshared key for 10.5.1.70, 189060: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Verify peer's authentication data, 189061: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Use preshared key for id 10.5.1.70, key len 7, 189062: *Aug 8 14:01:22.433 Chicago: IKEv2:[IKEv2 -> Crypto Engine] Generate IKEv2 authentication data, 189063: *Aug 8 14:01:22.433 Chicago: IKEv2:[Crypto Engine -> IKEv2] IKEv2 authentication data generation PASSED, 189064: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Verification of peer's authenctication data PASSED, 189065: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Processing INITIAL_CONTACT, 189066: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Received valid config mode data.
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