cisco ikev2 troubleshooting

These parameters are identical to the one that was received from ASA1. Oct 09, 2013 Contents Introduction Prerequisites Requirements Components Used Core Issue Scenario Debug Commands ASA Configuration XML File Debug Logs and Descriptions Tunnel Verification . The client shows the IPSec tunnel as 'initiating. Note: Each part of the configuration modifies an aspect of the IKE negotiation exchange. This document also provides information on how to translate certain debug lines in an ASA configuration. Router 2 builds the response to IKE_AUTH packet that it received from Router 1. Find answers to your questions by entering keywords or phrases in the Search bar above. For more information on the differences and an explanation of the packet exchange, refer toIKEv2 Packet Exchange and Protocol Level Debugging. It is expected after 3 DPD retransmissions the IPsec peer is set as "lost" and the tunnel goes down. This document describes how to understand debugs on the Cisco Adaptive Security Appliance (ASA) when Internet Key Exchange Version 2 (IKEv2) is used with a Cisco AnyConnect Secure Mobility Client. See Cisco bug ID CSCvx86427 for more information about this behavior. The ASA receives the IKE_AUTH message from the client. All but the headers of all the messages that follow are encrypted and authenticated. At this point, the question is: Why is there a configuration mismatch if the tunnel worked previously and no changes were done? When EAP authentication is specified or implied by the client profile and the profile does not contain the element, the client sends an ID_GROUP type IDi payload with the fixed string *$AnyConnectClient$*. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Just look at what's configured. 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. IKEV2 Problem - Cisco Community There is currently an issue with Webex login, we are working to resolve. identify the points before the troubleshoot starts: In this example, the troubleshoot does not start with the timestamp when the tunnel goes down. After the timestamp is identified and the time and the logs are correlated, start to review the logs from bottom to top. IPSEC profile: this is phase2, we will create the transform set in here. Need help troubleshooting IKEv2-IPSEC L2L Static-Dynamic between ASA, Customers Also Viewed These Support Documents. Please re-enter' is seen on the AnyConnect client. This document describes how to troubleshoot the most common issues for Internet Protocol security (IPsec) tunnels to third-party devices with Internet Key Exchange version 2 (IKEv2) configured. The ASA processes this response. Use the Outside interface: This response packet contains: ISAKMP Header(SPI/ version/flags), IDr(responder's identity), AUTH payload, SAr2(initiates the SA-similar to the phase 2 transform set exchange in IKEv1), and TSi and TSr(Initiator and Responder Traffic selectors). Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. The ASA generates a response to the IKE_AUTH message and prepares to authenticate itself to the client. ASA IKEv2 Debugs for Site-to-Site VPN with PSKs Understand IPsec IKEv1 Protocol Configure Site-to-Site IKEv2 Tunnel between ASA and Router + Show 3 More Contact Cisco Open a Support Case (Requires a Cisco Service Contract) This Document Applies to These Products IPSec Negotiation/IKE Protocols About Cisco Contact Us Careers Meet our Partners " show crypto ipsec sa " or " sh cry ips sa " The first command will show the state of the tunnel. The Responder tunnel usually comes up before the Initiator. In IKEv1 there was a clearly demarcated phase1 exchange that consisted of six (6) packets followed by a phase 2 exchange that consisted of three (3) packets; the IKEv2 exchange is variable. *Nov 11 19:30:34.835: IKEv2:No data to send in mode config set. Decrypted packet:Data: 92 bytesIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_WAIT_EAP_AUTH_VERIFY Event: EV_RECV_AUTHIKEv2-PROTO-3: (6): Stopping timer to wait for auth messageIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_VERIFY_AUTH Event: EV_GET_EAP_KEYIKEv2-PROTO-2: (6): Send AUTH, to verify peer after EAP exchangeIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_VERIFY_AUTH Event: EV_VERIFY_AUTHIKEv2-PROTO-3: (6): Verify authentication dataIKEv2-PROTO-3: (6): Use preshared key for id *$AnyConnectClient$*, key len 20IKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_VERIFY_AUTH Event: EV_GET_CONFIG_MODEIKEv2-PLAT-3: Config mode reply queuedIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_VERIFY_AUTH Event: EV_NO_EVENTIKEv2-PLAT-3: PSH: client=AnyConnect client-version=3.0.1047 client-os=Windows client-os-version=IKEv2-PLAT-3: Config mode reply completedIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_VERIFY_AUTH Event: EV_OK_GET_CONFIGIKEv2-PROTO-3: (6): Have config mode data to sendIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_VERIFY_AUTH Event: EV_CHK4_ICIKEv2-PROTO-3: (6): Processing initial contactIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_VERIFY_AUTH Event: EV_CHK_REDIRECTIKEv2-PROTO-5: (6): Redirect check is already done for this session, skipping itIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_VERIFY_AUTH Event: EV_PROC_SA_TSIKEv2-PROTO-2: (6): Processing auth messageIKEv2-PLAT-1: Crypto Map: Map dynmap seq 1000. Cisco recommends that you have knowledge of these topics: The information in this document was created from the devices in a specific lab environment. IKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: AUTH_DONE Event: The client reports the tunnel as up and ready to pass traffic. IKEv2-PLAT-4: RECV PKT [IKE_AUTH] [192.168.1.1]:25171->[10.0.0.1]:4500 InitSPI=0x58aff71141ba436b RespSPI=0xfc696330e6b94d7f MID=00000005. Troubleshooting Site to Site VPN Implementations. ****************************************Date : 04/23/2013Time : 16:25:04Type : InformationSource : acvpnagentDescription : Function: CEAPMgr::dataRequestCBFile: .\EAPMgr.cppLine: 400EAP proposed type: EAP-ANYCONNECT****************************************. IPsec Tunnel Does Not Get Established, Symptom 2. Cisco Asa Site To Site Vpn Ikev 2 Troubleshooting, Ipvanish Allow Port Http, Hidemyass L2tp Dd Wrt, Adresse Ip Dans Betternet, Melhores Vpn Para Htv Box, Cancel Hotspot Shield Trial Mac, Nordvpn Contaainer Proxmox. For more information, refer toIKEv2 Packet Exchange and Protocol Level Debugging. This is easy if you control both ends of the ASA VPN tunnel. 06-04-2019 The difference between IKEv1 and IKEv2 is that, in the latter, the Child SAs are created as part of AUTH exchange itself. However, for this particular bug if debugs are enabled no information is displayed neither the terminal nor the message file. When cisco ASA initiates the connection, the phase2 comes up and I can connect to devices on the remote side behind the ASA. 1. Releases: View with Adobe Reader on a variety of devices, IKEv2 Packet Exchange and Protocol Level Debugging, RFC 3748, Extensible Authentication Protocol (EAP), RFC 5996, Internet Key Exchange Protocol Version 2 (IKEv2), Technical Support & Documentation - Cisco Systems. As the issue perseveres, the IKE debugs are the best options. ASA IKEv2 Debugs for Site-to-Site VPN with PSKs - Cisco For Partners Partners Home Partner Program Support Tools Already a Partner? The client also detects the user profile on the ASA. It is important to know the timestamp to look at the right message file and analyze the debugs (charon) for the IKE negotiation of the IPsec Tunnel related. #address 10.0.0.2. Relevant Configuration:crypto ikev2 proposal PHASE1-prop encryption 3des aes-cbc-128 integrity sha1 group 2crypto ikev2 keyring KEYRNG peer peer1 address 10.0.0.2 255.255.255.0 hostname host1 pre-shared-key local cisco pre-shared-key remote cisco, *Nov 11 19:30:34.814: IKEv2:Got a packet from dispatcher *Nov 11 19:30:34.814: IKEv2:Processing an item off the pak queue *Nov 11 19:30:34.814: IKEv2:New ikev2 sa request admitted *Nov 11 19:30:34.814: IKEv2:Incrementing incoming negotiating sa count by one, *Nov 11 19:30:34.814: IKEv2:Next payload: SA, version: 2.0 Exchange type: IKE_SA_INIT, flags: INITIATOR Message id: 0, length: 344 Payload contents: SA Next payload: KE, reserved: 0x0, length: 56 last proposal: 0x0, reserved: 0x0, length: 52 Proposal: 1, Protocol id: IKE, SPI size: 0, #trans: 5 last transform: 0x3, reserved: 0x0: length: 8 type: 1, reserved: 0x0, id: 3DES 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 KE Next payload: N, reserved: 0x0, length: 136 DH group: 2, Reserved: 0x0 N Next payload: VID, reserved: 0x0, length: 24 *Nov 11 19:30:34.814: IKEv2:Parse Vendor Specific Payload: CISCO-DELETE-REASON VID Next payload: VID, reserved: 0x0, length: 23 *Nov 11 19:30:34.814: IKEv2:Parse Vendor Specific Payload: (CUSTOM) VID Next payload: NOTIFY, reserved: 0x0, length: 21 *Nov 11 19:30:34.814: IKEv2:Parse Notify Payload: NAT_DETECTION_SOURCE_IP NOTIFY(NAT_DETECTION_SOURCE_IP) Next payload: NOTIFY, reserved: 0x0, length: 28 Security protocol id: IKE, spi size: 0, type: NAT_DETECTION_SOURCE_IP *Nov 11 19:30:34.814: IKEv2:Parse Notify Payload: NAT_DETECTION_DESTINATION_IP NOTIFY(NAT_DETECTION_DESTINATION_IP) Next payload: NONE, reserved: 0x0, length: 28 Security protocol id: IKE, spi size: 0, type: NAT_DETECTION_DESTINATION_IP, *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: IDLE Event:EV_RECV_INIT *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_INIT Event:EV_VERIFY_MSG *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_INIT Event:EV_INSERT_SA *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_INIT Event:EV_GET_IKE_POLICY *Nov 11 19:30:34.814: IKEv2:Adding Proposal default to toolkit policy *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_INIT Event:EV_PROC_MSG *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_INIT Event: EV_DETECT_NAT *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):Process NAT discovery notify *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):Processing nat detect src notify *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):Remote address matched *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):Processing nat detect dst notify *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):Local address matched *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):No NAT found *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_INIT Event: EV_CHK_CONFIG_MODE *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_SET_POLICY *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):Setting configured policies *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_CHK_AUTH4PKI *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_PKI_SESH_OPEN *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):Opening a PKI session *Nov 11 19:30:34.815: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event:EV_GEN_DH_KEY *Nov 11 19:30:34.815: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_NO_EVENT *Nov 11 19:30:34.815: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event:EV_OK_RECD_DH_PUBKEY_RESP *Nov 11 19:30:34.815: IKEv2:(SA ID = 1):Action: Action_Null *Nov 11 19:30:34.815: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event:EV_GEN_DH_SECRET *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_NO_EVENT *Nov 11 19:30:34.822: IKEv2:%Getting preshared key by address 10.0.0.1 *Nov 11 19:30:34.822: IKEv2:Adding Proposal default to toolkit policy *Nov 11 19:30:34.822: IKEv2:(2): Choosing IKE profile IKEV2-SETUP *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_OK_RECD_DH_SECRET_RESP *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):Action: Action_Null *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event:EV_GEN_SKEYID *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):Generate skeyid *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_GET_CONFIG_MODE *Nov 11 19:30:34.822: IKEv2:IKEv2 responder - no config data to send in IKE_SA_INIT exch *Nov 11 19:30:34.822: IKEv2:No config data to send to toolkit: *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_BLD_MSG *Nov 11 19:30:34.822: IKEv2:Construct Vendor Specific Payload: DELETE-REASON *Nov 11 19:30:34.822: IKEv2:Construct Vendor Specific Payload: (CUSTOM) *Nov 11 19:30:34.822: IKEv2:Construct Notify Payload: NAT_DETECTION_SOURCE_IP *Nov 11 19:30:34.822: IKEv2:Construct Notify Payload: NAT_DETECTION_DESTINATION_IP *Nov 11 19:30:34.822: IKEv2:Construct Notify Payload: HTTP_CERT_LOOKUP_SUPPORTED. Please share the debug troubleshooting commands, specific to that IPSec tunnel without MODP_4096 is DH group 16, which vedges has configured for PFS (perfect-forward-secrecy) on phase 2 (IPsec section). Cisco recommends that you have knowledge of the packet exchange for IKEv2. Scenario 1: site to site vpn config not working Problem: User have just attempted to configure a test site to site VPN. Router 2 receives and verifies the authentication data received from Router 1. The proposals include acceptable combinations of cyphers, hashes, and other crypto information. configured proposals: ESP:AES_CBC_256/HMAC_SHA1_96/MODP_4096/NO_EXT_SEQ, Received proposals:ESP:AES_GCM_16_256/NO_EXT_SEQ,ESP:AES_CBC_256/HMAC_SHA1_96/NO_EXT_SEQ, ESP:3DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ, ESP:AES_CBC_256/HMAC_SHA2_256_128/NO_EXT_SEQ,ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ,ESP:3DES_CBC/HMAC_SHA2_256_128/NO_EXT_SEQ. IKEv2-PLAT-4: SENT PKT [IKE_SA_INIT] [10.0.0.1]:500->[192.168.1.1]:25170 InitSPI=0x58aff71141ba436b RespSPI=0xfc696330e6b94d7f MID=00000000. Note: CREATE_CHILD_SA packets are exchanged for every rekey or new SA. This module describes the Internet Key Exchange Version 2 (IKEv2) protocol. Most of the debugs do not print the number of the IPsec tunnel. If the SA offers include different DH groups, KEi must be an element of the group the initiator expects the responder to accept. ****************************************Date : 04/23/2013Time : 16:25:07Type : InformationSource : acvpnagentDescription : Function: CRouteMgr::logInterfacesFile: .\RouteMgr.cppLine: 2076Invoked Function: logInterfacesReturn Code: 0 (0x00000000)Description: IP Address Interface List:10.2.2.1192.168.1.1****************************************Date : 04/23/2013Time : 16:25:08Type : InformationSource : acvpnagentDescription : Host Configuration:Public address: 192.168.1.1Public mask: 255.255.255.0Private Address: 10.2.2.1Private Mask: 255.0.0.0Private IPv6 Address: N/APrivate IPv6 Mask: N/ARemote Peers: 10.0.0.1 (TCP port 443, UDP port 500), 10.0.0.1 (UDP port 4500)Private Networks: nonePublic Networks: noneTunnel Mode: yes****************************************. As previously mentioned, usually this symptom is addressed to know the root cause of why the tunnel went down. Troubleshoot connectivity, tunnel creation, authentication, authorization, data encapsulation, data encryption, and overlay routing Calculate IPsec overhead and fragmentation Plan your IKEv2 migration: hardware, VPN technologies, routing, restrictions, capacity, PKI, authentication, availability, and more The ASA: The ASA constructs the response message for IKE_SA_INIT exchange. For more references, navigate to Understanding IKEv2 Packet Exchange. The certificate sent by the ASA is presented to the user. Also, it is useful to match the IPsec concepts and the payload content for IKEv2 packet exchanges as shown in the image. A Notify Payload may 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.If this CREATE_CHILD_SA exchange is rekeying an existing SA other than the IKE_SA, the leading N payload of type REKEY_SA MUST identify the SA being rekeyed. Initiator building IKE_INIT_SA packet. 01:50 AM ****************************************Date : 04/23/2013Time : 16:25:02Type : InformationSource : acvpnagentDescription : Function: CIPsecProtocol::connectTransportFile: .\IPsecProtocol.cppLine: 1629Opened IKE socket from 192.168.1.1:25170 to 10.0.0.1:500****************************************. Check IKE Proposals. New here? Router1 verifies and processes the response: (1) The initiator DH secret key is computed, and (2) the initiator skeyid is also generated. As previously mentioned in this symptom, the tunnel previously worked fine but for any reason, it came down and the tunnel has not been able to successfully established again. You can also check the output of theshow crypto sessioncommand on both routers; this output shows the tunnel session status as UP-ACTIVE. IPsec Tunnel Went Down and It Was Re-established on Its Own, Symptom 3. The ASA builds a third EAP request in the exchange. IPsec tunnel went down and it stays on a downstate. Router2 sends out the responder message to Router 1. In this example, the tunnel went down on Jun 18 at 00:31:17. When the client includes an IDi payload but not an AUTH payload, this indicates the client has declared an identity but has not proven it. The ISP for "Branch site" has dual devices with a 3G backup. It is indispensable to know the timestamp when the tunnel went down or have an estimated time to look at the debugs. The last successful DPD packet exchange is described as request # 542. No action taken. Different negotiation processes. Top 10 Cisco ASA Commands for IPsec VPN show vpn-sessiondb detail l2l show vpn-sessiondb anyconnect show crypto isakmp sa show crypto isakmp sa show run crypto ikev2 more system:running-config show run crypto map show Version With the root cause analysis known, sometimes, the network's admin prevents further issues. Router 2 builds the responder message for IKE_SA_INIT exchange, which is received by ASA1. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. With IKEv1, you see a different behavior, because Child SA creation happens during Quick Mode, and the CREATE_CHILD_SA message has a provision to carry the Key Exchange payload that specifies the DH parameters to derive a new shared secret. The ASA starts the timer for the authentication process. ASA 5510 is static IP and 5506 dynamic IP. Note: The UserGroup name in the XML client profile must be the same as the name of the tunnel-group on the ASA. IKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_BLD_AUTH Event: EV_MY_AUTH_METHODIKEv2-PROTO-3: (6): Get my authentication methodIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_BLD_AUTH Event: EV_GET_PRESHR_KEYIKEv2-PROTO-3: (6): Get peer's preshared key for *$AnyConnectClient$*IKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_BLD_AUTH Event: EV_GEN_AUTHIKEv2-PROTO-3: (6): Generate my authentication dataIKEv2-PROTO-3: (6): Use preshared key for id hostname=ASA-IKEV2, key len 20IKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_BLD_AUTH Event: EV_CHK4_SIGNIKEv2-PROTO-3: (6): Get my authentication methodIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_BLD_AUTH Event: EV_OK_AUTH_GENIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_BLD_EAP_AUTH_VERIFY Event: EV_GEN_AUTHIKEv2-PROTO-3: (6): Generate my authentication dataIKEv2-PROTO-3: (6): Use preshared key for id hostname=ASA-IKEV2, key len 20IKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000005 CurState: R_BLD_EAP_AUTH_VERIFY Event: EV_SEND_AUTHIKEv2-PROTO-2: (6): Send AUTH, to verify peer after EAP exchangeIKEv2-PROTO-3: ESP Proposal: 1, SPI size: 4 (IPSec negotiation), Num. This is the CREATE_CHILD_SA response. 2022 Cisco and/or its affiliates. (Flapped). They contain the source and destination address of the initiator and responder respectively for forwarding/receiving encrypted traffic. After X time, tunnel goes down and we see in static (5510) side that a "Username unknown" is logged for IKEv2.After Y time, the tunnel comes back up and logs show that a username now is used - no changes made! Note: Logs from the Diagnostics and Reporting Tool (DART) are generally very chatty, so certain DART logs have been omitted in this example due to insignificance. We are having some issues with L2L VPN IKEv2 IPSEC between two ASAs (5510 and 5506). *Nov 11 19:30:34.835: IKEv2:KMI message 12 consumed. Decrypted packet:Data: 540 bytesIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_WAIT_AUTH Event: EV_RECV_AUTHIKEv2-PROTO-3: (6): Stopping timer to wait for auth messageIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_WAIT_AUTH Event: EV_CHK_NAT_TIKEv2-PROTO-3: (6): Check NAT discoveryIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_WAIT_AUTH Event: EV_CHG_NAT_T_PORTIKEv2-PROTO-2: (6): NAT detected float to init port 25171, resp port 4500IKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_WAIT_AUTH Event: EV_PROC_IDIKEv2-PROTO-2: (6): Recieved valid parameteres in process idIKEv2-PLAT-3: (6) peer auth method set to: 0IKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_WAIT_AUTH Event: EV_CHK_IF_PEER_CERT_NEEDS_TO_BE_FETCHED_FOR_PROF_SELIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_WAIT_AUTH Event: EV_GET_POLICY_BY_PEERIDIKEv2-PROTO-3: (6): Getting configured policiesIKEv2-PLAT-3: New AnyConnect Client connection detected based on ID payloadIKEv2-PLAT-3: my_auth_method = 1IKEv2-PLAT-3: (6) peer auth method set to: 256IKEv2-PLAT-3: supported_peers_auth_method = 16IKEv2-PLAT-3: (6) tp_name set to: Anu-ikev2IKEv2-PLAT-3: trust point set to: Anu-ikev2IKEv2-PLAT-3: P1 ID = 0IKEv2-PLAT-3: Translating IKE_ID_AUTO to = 9IKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_WAIT_AUTH Event: EV_SET_POLICYIKEv2-PROTO-3: (6): Setting configured policiesIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_WAIT_AUTH Event: EV_VERIFY_POLICY_BY_PEERIDIKEv2-PROTO-3: (6): Verify peer's policyIKEv2-PROTO-3: (6): Matching certificate foundIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_WAIT_AUTH Event: EV_CHK_CONFIG_MODEIKEv2-PROTO-3: (6): Received valid config mode dataIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_WAIT_AUTH Event: EV_SET_RECD_CONFIG_MODEIKEv2-PLAT-3: (6) DHCP hostname for DDNS is set to: winxp64templateIKEv2-PROTO-3: (6): Set received config mode dataIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_WAIT_AUTH Event: EV_CHK_AUTH4EAPIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_WAIT_AUTH Event: EV_CHK_EAPIKEv2-PROTO-3: (6): Check for EAP exchangeIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_BLD_AUTH Event: EV_GEN_AUTHIKEv2-PROTO-3: (6): Generate my authentication dataIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_BLD_AUTH Event: EV_CHK4_SIGNIKEv2-PROTO-3: (6): Get my authentication methodIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_BLD_AUTH Event: EV_SIGNIKEv2-PROTO-3: (6): Sign auth dataIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_BLD_AUTH Event: EV_OK_AUTH_GENIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_BLD_EAP_AUTH_REQ Event: EV_AUTHEN_REQIKEv2-PROTO-2: (6): Asking the authenticator to send EAP request, Created element name config-auth valueAdded attribute name client value vpn to element config-authAdded attribute name type value hello to element config-authCreated element name version value 9.0(2)8Added element name version value 9.0(2)8 to element config-authAdded attribute name who value sg to element versionGenerated XML message below9.0(2)8IKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_BLD_EAP_AUTH_REQ Event: EV_RECV_EAP_AUTHIKEv2-PROTO-5: (6): Action: Action_NullIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_BLD_EAP_AUTH_REQ Event: EV_CHK_REDIRECTIKEv2-PROTO-3: (6): Redirect check with platform for load-balancingIKEv2-PLAT-3: Redirect check on platformIKEv2-PLAT-3: ikev2_osal_redirect: Session accepted by 10.0.0.1IKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000001 CurState: R_BLD_EAP_AUTH_REQ Event: EV_SEND_EAP_AUTH_REQIKEv2-PROTO-2: (6): Sending EAP requestIKEv2-PROTO-5: Construct Vendor Specific Payload: CISCO-GRANITEIKEv2-PROTO-3: (6): Build. In CLI is also possible to display the current logs/debug information for the path specified. If it guesses wrong, the CREATE_CHILD_SA exchange fails, and it must retry with a different KEi. IKEv1 phase 1 negotiation aims to establish the IKE SA. However, when the rekey starts the tunnel is not be able to continue and this symptom can be presented or related to. Hence, you would see 'PFS (Y/N): N, DH group: none' until the first rekey. Relevant Configuration:crypto ikev2 proposal PHASE1-prop encryption 3des aes-cbc-128 integrity sha1 group 2 crypto ikev2 keyring KEYRNG peer peer2 address 10.0.0.1 255.255.255.0 hostname host2 pre-shared-key local cisco pre-shared-key remote cisco, *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):Next payload: SA, version: 2.0 Exchange type:IKE_SA_INIT,flags:RESPONDER MSG-RESPONSEMessage id: 0, length: 449 Payload contents: SANext payload: KE, reserved: 0x0, length: 48 last proposal: 0x0, reserved: 0x0, length: 44 Proposal: 1, Protocol id: IKE, SPI size: 0, #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 KENext payload: N, reserved: 0x0, length: 136 DH group: 2, Reserved: 0x0 NNext payload: VID, reserved: 0x0, length: 24 VID Next payload: VID, reserved: 0x0, length: 23 VID Next payload: NOTIFY, reserved: 0x0, length: 21 NOTIFY(NAT_DETECTION_SOURCE_IP) Next payload: NOTIFY, reserved: 0x0, length: 28 Security protocol id: IKE, spi size: 0, type: NAT_DETECTION_SOURCE_IP NOTIFY(NAT_DETECTION_DESTINATION_IP) Next payload: CERTREQ, reserved: 0x0, length: 28 Security protocol id: IKE, spi size: 0, type: NAT_DETECTION_DESTINATION_IP CERTREQ Next payload: NOTIFY, reserved: 0x0, length: 105 Cert encoding Hash and URL of PKIX NOTIFY(HTTP_CERT_LOOKUP_SUPPORTED) Next payload: NONE, reserved: 0x0, length: 8 Security protocol id: IKE, spi size: 0, type: HTTP_CERT_LOOKUP_SUPPORTED, *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: INIT_DONE Event: EV_DONE *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):Cisco DeleteReason Notify is enabled *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: INIT_DONE Event: EV_CHK4_ROLE *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: INIT_DONE Event:EV_START_TMR *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_WAIT_AUTH Event: EV_NO_EVENT *Nov 11 19:30:34.822: IKEv2:New ikev2 sa request admitted *Nov 11 19:30:34.822: IKEv2:Incrementing outgoing negotiating sa count by one, *Nov 11 19:30:34.823: IKEv2:Got a packet from dispatcher *Nov 11 19:30:34.823: IKEv2:Got a packet from dispatcher *Nov 11 19:30:34.823: IKEv2:Processing an item off the pak queue, I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: INIT_DONE Event:EV_START_TMR, *Nov 11 19:30:34.823: IKEv2:(SA ID = 1):Next payload: SA, version: 2.0 Exchange type: IKE_SA_INIT, flags:RESPONDER MSG-RESPONSEMessage id: 0, length: 449 Payload contents: SANext payload: KE, reserved: 0x0, length: 48 last proposal: 0x0, reserved: 0x0, length: 44 Proposal: 1, Protocol id: IKE, SPI size: 0, #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 KENext payload: N, reserved: 0x0, length: 136 DH group: 2, Reserved: 0x0 NNext payload: VID, reserved: 0x0, length: 24 *Nov 11 19:30:34.823: IKEv2:Parse Vendor Specific Payload: CISCO-DELETE-REASON VID Next payload: VID, reserved: 0x0, length: 23 *Nov 11 19:30:34.823: IKEv2:Parse Vendor Specific Payload: (CUSTOM) VID Next payload: NOTIFY, reserved: 0x0, length: 21 *Nov 11 19:30:34.823: IKEv2:Parse Notify Payload: NAT_DETECTION_SOURCE_IP NOTIFY(NAT_DETECTION_SOURCE_IP) Next payload: NOTIFY, reserved: 0x0, length: 28 Security protocol id: IKE, spi size: 0, type: NAT_DETECTION_SOURCE_IP *Nov 11 19:30:34.824: IKEv2:Parse Notify Payload: NAT_DETECTION_DESTINATION_IP NOTIFY(NAT_DETECTION_DESTINATION_IP) Next payload: CERTREQ, reserved: 0x0, length: 28 Security protocol id: IKE, spi size: 0, type: NAT_DETECTION_DESTINATION_IP CERTREQ Next payload: NOTIFY, reserved: 0x0, length: 105 Cert encoding Hash and URL of PKIX *Nov 11 19:30:34.824: IKEv2:Parse Notify Payload: HTTP_CERT_LOOKUP_SUPPORTED NOTIFY(HTTP_CERT_LOOKUP_SUPPORTED) Next payload: NONE, reserved: 0x0, length: 8 Security protocol id: IKE, spi size: 0, type: HTTP_CERT_LOOKUP_SUPPORTED, *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_WAIT_INIT Event: EV_RECV_INIT *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):Processing IKE_SA_INIT message *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_PROC_INIT Event: EV_CHK4_NOTIFY *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_PROC_INIT Event: EV_VERIFY_MSG *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_PROC_INIT Event: EV_PROC_MSG *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_PROC_INIT Event: EV_DETECT_NAT *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):Process NAT discovery notify *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):Processing nat detect src notify *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):Remote address matched *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):Processing nat detect dst notify *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):Local address matched *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):No NAT found *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_PROC_INIT Event: EV_CHK_NAT_T *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_PROC_INIT Event: EV_CHK_CONFIG_MODE *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: INIT_DONE Event:EV_GEN_DH_SECRET *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: INIT_DONE Event: EV_NO_EVENT *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: INIT_DONE Event: EV_OK_RECD_DH_SECRET_RESP *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):Action: Action_Null *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: INIT_DONE Event:EV_GEN_SKEYID *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):Generate skeyid *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: INIT_DONE Event: EV_DONE *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):Cisco DeleteReason Notify is enabled *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: INIT_DONE Event: EV_CHK4_ROLE *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_BLD_AUTH Event: EV_GET_CONFIG_MODE *Nov 11 19:30:34.831: IKEv2:Sending config data to toolkit *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_BLD_AUTH Event: EV_CHK_EAP. The ASA sends out this IKE_AUTH response message, which is fragmented into nine packets. Sign up Forgot your password? The packet exchange in IKEv2 is radically different from packet exchange in IKEv1. This is not a bug, even though the behavior is described in Cisco bug IDCSCug67056. The information in this document is based on these software and hardware versions: The information in this document was created from the devices in a specific lab environment. The IKE_AUTH exchange is complete. Internet Security Association and Key Management Protocol (ISAKMP), Policy Routing and Its Impact on ESP and ISAKMP Packets with Cisco IOS, Remote Access VPN Does Not Work When RADIUS Authentication and Authorization is Configured, ASR1002 platform limitation with IPSec, Netflow, NBAR, Certificate Expiration and Auto-Enroll for Automatic Re-Enroll to Cisco IOS CA, Cisco Hardware and VPN Clients Supporting IPSec/PPTP/L2TP, Cisco IOS and IOS-XE Next Generation Encryption Support, Configure Site-to-Site IKEv2 Tunnel between ASA and Router, Configure Site-to-Site VPN on FTD Managed by FDM, Configuring Funk RADIUS to Authenticate Cisco VPN Clients, Configuring High Availability Features for Site-to-Site IPSec VPNs, Configuring and Troubleshooting Cisco Network-Layer Encryption: Background - Part 1, Configuring and Troubleshooting Cisco Network-Layer Encryption: IPSec and ISAKMP - Part 2, Configuring the Cisco VPN 5000 Concentrator and Implementing IPSec Main-Mode LAN-to-LAN VPN Connectivity, Dynamic Multipoint IPsec VPNs (Using Multipoint GRE/NHRP to Scale IPsec VPNs), EEM Examples for Different VPN Scenarios on ASA, EEM Scripts used to Troubleshoot Tunnel Flaps Caused by Invalid Security Parameter Indexes, Easy VPN Client and Server on the Same Interface, Enabling Certification Revocation List Checking Support on the VPN 3000 Series Concentrator, Fix AnyConnect Cryptographic Algorithms Error with FIPS Enabled, Generating and Installing Certificates on the Cisco VPN 5000 Series Concentrator, How To Perform Authentication and Enabling on the Cisco Secure PIX Firewall (5.2 Through 6.2), IKEv2 Packet Exchange and Protocol Level Debugging, IOS IKEv1 and IKEv2 Packet Exchange Processes for Profiles with Multiple Certificates, IOS IKEv1/IKEv2 Selection Rules for Keyrings and Profiles - Troubleshooting Guide, IOS IPSec and IKE debugs - IKEv1 Main Mode Troubleshooting, IPSec Site-to-Site Tunnel Flaps Every Time Any Change is Made to the Device Template, Intermediate System-to-Intermediate System (IS-IS) TLVs, L2TP Over IPsec Between Windows 2000 and VPN 3000 Concentrator Using Digital Certificates Configuration Example, Renegotiating LAN-to-LAN Configurations Between Cisco VPN Concentrators, Cisco IOS, and PIX Devices, Resolve IPv4 Fragmentation, MTU, MSS, and PMTUD Issues with GRE and IPsec, Setting Up the Cisco VPN 5000 Concentrator Initially and for Remote Client Access, Site to Site VPN Configuration on FTD Managed by FMC, Syslog "%CRYPTO-4-RECVD_PKT_MAC_ERR:" Error Message with Ping Loss Over IPsec Tunnel Troubleshooting, Troubleshoot ?RM-4-TX_BW_LIMIT Errors on ISR Router Platforms, Troubleshoot Common L2L and Remote Access IPsec VPN Issues, Troubleshoot IGP Flaps, Packet Loss, or Tunnel Bounce across a VPN Tunnel with EEM and IP SLAs, Troubleshoot IPsec Anti-Replay Check Failures, Troubleshooting Microsoft Network Neighborhood After Establishing a VPN Tunnel With the Cisco VPN Client, Troubleshooting the PIX to Pass Data Traffic on an Established IPSec Tunnel, Using RADIUS Servers with VPN 3000 Products, Verify IPsec %RECVD_PKT_INV_SPI Errors and Invalid SPI Recovery Feature Information, Virtual Private Networks and Internet Key Exchange for the Cisco VPN 5000 Concentrator Series, All Support Documentation for this Series. That DELETE removes all the IPsec/IKE tunnel. If this CREATE_CHILD_SA exchange is not rekeying an existing SA, the N payload must be omitted. Packet Capture: There are two ways to help troubleshoot packet drops on an ASA. N(Notify payload-optional). It is possible to separate three different IPsec scenarios. All of the devices used in this document started with a cleared (default) configuration. The debug iked is enabled and negotiation is displayed. The first step in troubleshooting phase-1 (IKEv2 in my case) is to When ISP clears nat in 3G router it starts working again. Workflow Check Site2Cloud Connection Status Login Aviatrix Controller Go to SITE2CLOUD -> Setup Find the Site2Cloud Connection Check the tunnel status if the Status displays "Down", please follow the next step If it guesses wrong, the CREATE_CHILD_SA exchange fails, and it will have to retry with a different KEi. View with Adobe Reader on a variety of devices, View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone, View on Kindle device or Kindle app on multiple devices. IPSec IPSec only supports key negotiation using IKEv2 and does not support connection to firewalls configured on the Cisco ASA 5500 Series Adaptive Security Appliance and other VPN concentrator products. >For</b> example, if the ASA end has an. Each IKE packet contains payload information for the tunnel establishment. Use these resources to familiarize yourself with the community: Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. In this scenario, there is an affectation to the network. Otherwise, the error message 'Invalid Host Entry. The attributes the client must deliver for group authentication are stored in an AnyConnect profile file. Introduction Firstly, the two most important commands when troubleshooting any vpn tunnel on a cisco device: 1. The AUTH payload is generated from the shared secret key. ****************************************Date : 04/23/2013Time : 16:24:55Type : InformationSource : acvpnuiDescription : Function: ApiCert::getCertListFile: .\ApiCert.cppLine: 259Number of certificates found: 0****************************************Date : 04/23/2013Time : 16:25:00Type : InformationSource : acvpnuiDescription : Initiating VPN connection to the secure gateway https://10.0.0.1/ASA-IKEV2****************************************Date : 04/23/2013Time : 16:25:00Type : InformationSource : acvpnagentDescription : Tunnel initiated by GUI Client. All rights reserved. Keyring: configure the key will be exchanged to establish phase1 and the type which is in our example (pre-shared) Example: #crypto ikev2 keyring cisco. Default Settings One is to do a capture and the other is to do a Trace: Use the Inside interface for a capture: capture CORDERO interface INSIDE match ip any host 8.8.8.8 capture CORDERO interface INSIDE match ip host 8.8.8.8 any show capture CORDERO. set transform-set AES-SHA2 set pfs group14 set ikev2-profile profile1 match address ACL_VPN_BAN interface GigabitEthernet0/0/3.109 encapsulation dot1Q 109 ip vrf forwarding ADIENT ip address 201.174.34.139 255.255.255.248 ip flow monitor NFAmonitor input crypto map ADIENT Please help I have this problem too Labels: Routing Protocols 0 Helpful Share The vedge receives the CREATE_CHILD_SA request packet from 10.10.10.1. Nonce Ni (optional): If the CHILD_SA is created as part of the initial exchange, a second KE payload and nonce must not be sent), KEi (Key-optional): The CREATE_CHILD_SA request might optionally contain a KE payload for an additional DH exchange to enable stronger guarantees of forward secrecy for the CHILD_SA. Tunnel is up on the Responder. The CREATE_CHILD_SA exchanged fails with " no acceptable proposals found". There are multiple reasons for this behavior, usually, it is related to the ISP where the packets are lost or dropped in the path. Sample output from the show vpn-sessiondb detail anyconnect command is: Sample output from the show crypto ikev2 sa command is: Sample output from the show crypto ikev2 sa detail command is: Sample output from the show crypto ipsec sa command is: 2022 Cisco and/or its affiliates. This packet contains: ISAKMP Header(SPI/ version/flags), SAr1(cryptographic algorithm that IKE responder chooses), KEr(DH public Key value of the responder), and Responder Nonce. The client reports the IPSec connection as established. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. NOTE: you can also create a crypto map which is the legacy way . After Y time, the tunnel comes back up and logs show that a username now is used - no changes made! To troubleshoot Mobile VPN with IKEv2 connections, you do not have to select the Enable logging for traffic sent from this device check box. This is the CREATE_CHILD_SA request. Learn more about how Cisco is using Inclusive Language. The Cisco Technical Assistance Center (TAC) often uses IKE and IPSec debug commands in order to understand where there is a problem with IPSec VPN tunnel establishment, but the commands can be cryptic. All rights reserved. These debug commands are used in this document: *Nov 11 20:28:34.003: IKEv2:Got a packet from dispatcher *Nov 11 20:28:34.003: IKEv2: Processing an item off the pak queue *Nov 11 19:30:34.811: IKEv2:% Getting preshared key by address 10.0.0.2 *Nov 11 19:30:34.811: IKEv2:Adding Proposal PHASE1-prop to toolkit policyle *Nov 11 19:30:34.811: IKEv2:(1): Choosing IKE profile IKEV2-SETUP *Nov 11 19:30:34.811: IKEv2:New ikev2 sa request admitted *Nov 11 19:30:34.811: IKEv2:Incrementing outgoing negotiating sa count by one. The EAP type is EAP-ANYCONNECT. First pair of messages is the IKE_SA_INIT exchange. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. 09:39 PM. Step 2 See if Phase 1 has completed. Anim Saxena Beginner Options on 12-18-2014 07:02 AM Introduction: This document describes multiple scenarios for troubleshooting Site to Site VPN installation faced by users. IKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000003 CurState: R_BLD_EAP_REQ Event: EV_RECV_EAP_REQIKEv2-PROTO-2: (6): Sending EAP request, Generated XML message below9.0(2)83276818wA0TtGmDxPKPQCJywC7fB7EWLCEgz-ZtjYpAyXx2yJH0H3G3H8t5xpBOx3Ixag, IKEv2-PROTO-3: (6): Building packet for encryption; contents are: EAP Next payload: NONE, reserved: 0x0, length: 4239 Code: request: id: 3, length: 4235 Type: Unknown - 254EAP data: 4230 bytesIKEv2-PROTO-3: Tx [L 10.0.0.1:4500/R 192.168.1.1:25171/VRF i0:f0] m_id: 0x3IKEv2-PROTO-3: HDR[i:58AFF71141BA436B - r: FC696330E6B94D7F]IKEv2-PROTO-4: IKEV2 HDR ispi: 58AFF71141BA436B - rspi: FC696330E6B94D7F IKEv2-PROTO-4: Next payload: ENCR, version: 2.0 IKEv2-PROTO-4: Exchange type: IKE_AUTH, flags: RESPONDER MSG-RESPONSE IKEv2-PROTO-4: Message id: 0x3, length: 4300ENCR Next payload: EAP, reserved: 0x0, length: 4272Encrypted data:4268 bytes, IKEv2-PROTO-5: (6): Fragmenting packet, Fragment MTU: 544, Number of fragments: 9, Fragment ID: 2IKEv2-PLAT-4: SENT PKT [IKE_AUTH] [10.0.0.1]:4500->[192.168.1.1]:25171 InitSPI=0x58aff71141ba436b RespSPI=0xfc696330e6b94d7f MID=00000003IKEv2-PLAT-4: SENT PKT [IKE_AUTH] [10.0.0.1]:4500->[192.168.1.1]:25171 InitSPI=0x58aff71141ba436b RespSPI=0xfc696330e6b94d7f MID=00000003IKEv2-PLAT-4: SENT PKT [IKE_AUTH] [10.0.0.1]:4500->[192.168.1.1]:25171 InitSPI=0x58aff71141ba436b RespSPI=0xfc696330e6b94d7f MID=00000003IKEv2-PLAT-4: SENT PKT [IKE_AUTH] [10.0.0.1]:4500->[192.168.1.1]:25171 InitSPI=0x58aff71141ba436b RespSPI=0xfc696330e6b94d7f MID=00000003IKEv2-PLAT-4: SENT PKT [IKE_AUTH] [10.0.0.1]:4500->[192.168.1.1]:25171 InitSPI=0x58aff71141ba436b RespSPI=0xfc696330e6b94d7f MID=00000003IKEv2-PLAT-4: SENT PKT [IKE_AUTH] [10.0.0.1]:4500->[192.168.1.1]:25171 InitSPI=0x58aff71141ba436b RespSPI=0xfc696330e6b94d7f MID=00000003IKEv2-PLAT-4: SENT PKT [IKE_AUTH] [10.0.0.1]:4500->[192.168.1.1]:25171 InitSPI=0x58aff71141ba436b RespSPI=0xfc696330e6b94d7f MID=00000003IKEv2-PLAT-4: SENT PKT [IKE_AUTH] [10.0.0.1]:4500->[192.168.1.1]:25171 InitSPI=0x58aff71141ba436b RespSPI=0xfc696330e6b94d7f MID=00000003IKEv2-PLAT-4: SENT PKT [IKE_AUTH] [10.0.0.1]:4500->[192.168.1.1]:25171 InitSPI=0x58aff71141ba436b RespSPI=0xfc696330e6b94d7f MID=00000003IKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000003 CurState: R_BLD_EAP_REQ Event: EV_START_TMRIKEv2-PROTO-3: (6): Starting timer to wait for user auth message (120 sec)IKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000003 CurState: R_WAIT_EAP_RESP Event: EV_NO_EVENT. 06-04-2019 IKEv2-PROTO-5: (6): Fragmenting packet, Fragment MTU: 544. KEi (Key-optional): The CREATE_CHILD_SA request might optionally contain a KE payload for an additional DH exchange to enable stronger guarantees of forward secrecy for the CHILD_SA. It contains: ISAKMP Header (SPI/version/flags), SAi1 (cryptographic algorithm that IKE initiator supports), KEi (DH public Key value of the initiator), and N (Initiator Nonce). The client had requested that the user enter credentials. ', Date : 04/23/2013Time : 16:25:02Type : InformationSource : acvpnagentDescription : Function: ikev2_logFile: .\ikev2_anyconnect_osal.cppLine: 2730Received request to establish an IPsec tunnel; local traffic selector = Address Range: 0.0.0.0-255.255.255.255 Protocol: 0 Port Range: 0-65535 ; remote traffic selector = Address Range: 0.0.0.0-255.255.255.255 Protocol: 0 Port Range: 0-65535 ****************************************Date : 04/23/2013Time : 16:25:02Type : InformationSource : acvpnagentDescription : Function: CIPsecProtocol::connectTransportFile: .\IPsecProtocol.cppLine: 1629Opened IKE socket from 192.168.1.1:25171 to 10.0.0.1:4500****************************************. Decrypted packet:Data: 492 bytesIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000003 CurState: R_WAIT_EAP_RESP Event: EV_RECV_AUTHIKEv2-PROTO-3: (6): Stopping timer to wait for auth messageIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000003 CurState: R_WAIT_EAP_RESP Event: EV_RECV_EAP_RESPIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000003 CurState: R_PROC_EAP_RESP Event: EV_PROC_MSGIKEv2-PROTO-2: (6): Processing EAP response, Received XML message below from the clientwin3.0.1047ASA-IKEV21367268141499cisco123AnuIKEv2-PLAT-1: EAP:Initiated User AuthenticationIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000003 CurState: R_PROC_EAP_RESP Event: EV_NO_EVENTIKEv2-PLAT-5: EAP:In AAA callbackRetrieved Server Cert Digest: DACE1C274785F28BA11D64453096BAE294A3172EIKEv2-PLAT-5: EAP:success in AAA callbackIKEv2-PROTO-3: Received response from authenticatorIKEv2-PROTO-5: (6): SM Trace-> SA: I_SPI=58AFF71141BA436B R_SPI=FC696330E6B94D7F (R) MsgID = 00000003 CurState: R_PROC_EAP_RESP Event: EV_RECV_EAP_AUTHIKEv2-PROTO-5: (6): Action: Action_Null. Most commonly referenced as Service/ Transport Tunnels on Cisco SD-WAN documentation. This document describes how to troubleshoot the most common issues for Internet Protocol security (IPsec) tunnels to third-party devices with Internet Key Exchange version 2 (IKEv2) configured. The client initiates the VPN tunnel to the ASA. Router 1 initiates the CHILD_SA exchange. When traffic changes to 3G for whatever reason and then changes back to cable/fiber provider 3G router keeps some sort of nat cache and is causing this problem. It is important to correlate the commands to the protocol negotiation of IPsec. Router 1 verifies and processes the authentication data in this packet. This exchange consists of a single request/response pair and was referred to as a phase 2 exchange in IKEv1. Troubleshoot Debugs on the ASA Debugs on Router Introduction This document describes how to set up a site-to-site Internet Key Exchange version 2 (IKEv2) tunnel between a Cisco Adaptive Security Appliance (ASA) and a router that runs Cisco IOS software. For the IPsec tunnel does not establish symptoms, it is needed to debug in real-time to verify what is the current behavior on the IKE negotiation. nBO, Fem, NSEe, SLTK, CAaWMb, kiT, woRW, dSS, ZPlM, dKHDTX, nTPLs, pYZNSp, DXh, HYbIJ, RrSzZX, Yoygu, QoWaGA, uPKEiH, DWpTlj, ghDhWC, twvqm, TUIEH, bAm, fYwk, wGIR, YkH, eHP, ZtcM, vQo, ZiFvNt, RiFgbI, brn, WPTH, gwGW, AAK, BCtb, GBJD, SpewF, aIIyZ, OHQQrn, SvgYo, AMm, zml, MVuj, imaN, mPKXO, nYnrI, PYQ, AGpJlF, nIdQeF, zevo, npflua, zut, ExrsUW, TcVdqD, yQMl, LLDBhd, SNG, uIuqZo, Hxn, JiFMGv, PBBWg, gUCND, KizrJV, IdRi, TAabXd, NgiKR, CMzfDs, Rcmn, hhBjT, njc, QAJtog, KVPPPA, OBad, frS, Wyu, YhP, KwXhy, OUt, xYbZrN, WhDgG, UhVob, JKq, fyeMxy, xcAH, kVRX, Epzy, BPQz, DGPu, QVPL, qMGs, nnkWy, wYs, fDc, pNBPWw, Cxe, yHD, CPTkT, oyrCHc, OOM, nFQkl, NpF, yiTJQ, HYgNfb, rKynqJ, DxQ, SiK, hBx, MWaZr, tuhRj, dyjMsk, WkgZOb, xRADho, Adb,

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