Debug IOS IPSec e IKE - Risoluzione dei problemi in modalità principale IKEv1

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Aggiornato:14 novembre 2013

ID documento:113594

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Sommario

Introduzione

Problema principale

Scenario

Debug usati

Configurazione router IOS

Configurazione crittografia

Altro lato

Debug

IOS Responder Side

Messaggio modalità principale 1 (MM1)

Messaggio modalità principale 2 (MM2) - Invio della risposta

Messaggio modalità principale 3 (MM3)

Messaggio modalità principale 4 (MM4)

Messaggio modalità principale 5 (MM5) - L'iniziatore invia la propria identità

Messaggio modalità principale 6 (MM6) - Il risponditore invia la propria identità. Completamento della fase 1.

Messaggio 1 modalità rapida (QM1)

Messaggio 2 modalità rapida (QM2)

QM3 (Quick Mode Message 3) - La seconda fase deve essere completata e l'interfaccia del tunnel deve essere attiva

IOS Router - Iniziatore

Messaggio modalità principale 1 (MM1) - Contatto iniziale

Messaggio modalità principale 2 (MM2) - Risposta al contatto iniziale

Messaggio 3 in modalità principale (MM3) - Rilevamento NAT e scambio Diffie-Hellman

Messaggio 4 in modalità principale (MM4) - Rilevamento NAT e scambio Diffie-Hellman

Messaggio modalità principale 5 (MM5) - Invia identità

Messaggio in modalità principale 6 (MM6) - Identità peer remota, fase 1 stabilita

Messaggio 1 in modalità rapida (QM1) - Inizio fase 2 per peer

Messaggio 2 modalità rapida (QM2)

Messaggio 3 in modalità rapida (QM3) - Fase 2

Verifica tunnel

Informazioni correlate

Introduzione

Questo documento offre informazioni per comprendere i debug sul software Cisco IOS^® quando si usano la modalità principale e la chiave precondivisa (PSK).

In questo documento viene spiegato anche come convertire alcune righe di debug in una configurazione.

Questi argomenti non vengono trattati:

Traffico in transito dopo la creazione del tunnel
Concetti di base di IPSec o IKE (Internet Key Exchange)

Problema principale

I debug IKE e IPSec tendono a essere criptici. Spesso i bug vengono usati dal Cisco Technical Assistance Center (TAC) per capire dove è stato riscontrato un problema con la definizione del tunnel VPN IPSec.

Scenario

La modalità principale viene in genere utilizzata tra tunnel da LAN a LAN o, in caso di accesso remoto (ezvpn), quando i certificati vengono utilizzati per l'autenticazione.

I debug vengono eseguiti da un dispositivo Cisco IOS con versione software 15.2(1)T.

In questo documento vengono descritti due scenari principali:

Iniziatore IOS
IOS responder side

In questo documento viene stabilito un tunnel basato su VTI tra due siti, basato su IPv6.

Note:

per ulteriori informazioni sui comandi menzionati in questo documento, usare lo strumento di ricerca dei comandi (solo utenti registrati).

consultare le informazioni importanti sui comandi di debug prima di usare i comandi di debug.

Debug usati

debug crypto isakmp
debug crypto ipsec
debug crypto kmi

Configurazione router IOS

Configurazione crittografia

crypto isakmp policy 10
authentication pre-share

crypto isakmp key cisco address ipv6 ::/0

crypto ipsec transform-set TRA esp-aes esp-sha-hmac
mode transport

crypto ipsec profile PRO
set transform-set TRA

interface Tunnel23
ip address 192.168.23.2 255.255.255.0
ipv6 address FE80::23:2 link-local
tunnel source Ethernet0/0
tunnel mode ipsec ipv6
tunnel destination 2001: DB8::3
tunnel protection ipsec profile PRO

Altro lato

crypto isakmp policy 10
authentication pre-share

crypto isakmp key cisco address ipv6 ::/0

crypto ipsec transform-set TRA esp-aes esp-sha-hmac
mode transport

crypto ipsec profile PRO
set transform-set TRA

interface Tunnel23
ip address 192.168.23.3 255.255.255.0
ipv6 address FE80::23:3 link-local
tunnel source Ethernet0/0
tunnel mode ipsec ipv6
tunnel destination 2001: DB8::2
tunnel protection ipsec profile PRO

Debug

IOS Responder Side

Messaggio modalità principale 1 (MM1)

La proposta iniziale di IKE comprende:

Crittografia
Hashing
Gruppo Diffie-Hellman (DH)
Durata

*Sep 21 08:33:43.377: ISAKMP (0) : received packet from 2001: DB8::2 dport 500 
   sport 500 Global (N) NEW SA
*Sep 21 08:33:43.377: ISAKMP: Created a peer struct for 2001: DB8::2, peer port
   500
*Sep 21 08:33:43.377: ISAKMP: New peer created peer = 0x8E45588 
   peer_handle = 0x8000000A
*Sep 21 08:33:43.377: ISAKMP: Locking peer struct 0x8E45588, refcount 1 for 
   crypto_isakmp_process_block
*Sep 21 08:33:43.377: ISAKMP: local port 500, remote port 500
*Sep 21 08:33:43.377: ISAKMP: (0):insert sa successfully sa = 6D12A00
*Sep 21 08:33:43.377: ISAKMP: (0):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*Sep 21 08:33:43.377: ISAKMP: (0): Old State = IKE_READY  New State = IKE_R_MM1
*Sep 21 08:33:43.377: ISAKMP: (0): processing SA payload. message ID = 0
*Sep 21 08:33:43.377: ISAKMP: (0):found peer pre-shared key matching 2001: 
   DB8::2
*Sep 21 08:33:43.377: ISAKMP: (0): local preshared key found
*Sep 21 08:33:43.377: ISAKMP: Scanning profiles for xauth ...
*Sep 21 08:33:43.377: ISAKMP: (0):Checking ISAKMP transform 1 against priority 
   10 policy
*Sep 21 08:33:43.377: ISAKMP:      encryption DES-CBC
*Sep 21 08:33:43.377: ISAKMP:      hash SHA
*Sep 21 08:33:43.377: ISAKMP:      default group 1
*Sep 21 08:33:43.377: ISAKMP:      auth pre-share
*Sep 21 08:33:43.377: ISAKMP:      life type in seconds
*Sep 21 08:33:43.377: ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80
*Sep 21 08:33:43.377: ISAKMP: (0):atts are acceptable. Next payload is 0
*Sep 21 08:33:43.377: ISAKMP: (0):Acceptable atts:actual life: 0
*Sep 21 08:33:43.377: ISAKMP: (0):Acceptable atts:life: 0
*Sep 21 08:33:43.377: ISAKMP: (0):Fill atts in sa vpi_length:4
*Sep 21 08:33:43.377: ISAKMP: (0):Fill atts in sa life_in_seconds:86400
*Sep 21 08:33:43.377: ISAKMP: (0):Returning Actual lifetime: 86400
*Sep 21 08:33:43.377: ISAKMP: (0):: Started lifetime timer: 86400.

*Sep 21 08:33:43.377: ISAKMP: (0):Input = IKE_MESG_INTERNAL, 
   IKE_PROCESS_MAIN_MODE
*Sep 21 08:33:43.377: ISAKMP: (0): Old State = IKE_R_MM1  New State = IKE_R_MM1

Configurazione correlata:

crypto isakmp policy 10
authentication pre-share

Messaggio modalità principale 2 (MM2) - Invio della risposta

*Sep 21 08:33:43.377: ISAKMP: (0): sending packet to 2001: DB8::2 my_port 500 
   peer_port 500 (R) MM_SA_SETUP
*Sep 21 08:33:43.377: ISAKMP: (0): Sending an IKE IPv6 Packet.
*Sep 21 08:33:43.377: ISAKMP: (0):Input = IKE_MESG_INTERNAL, 
   IKE_PROCESS_COMPLETE
*Sep 21 08:33:43.377: ISAKMP: (0): Old State = IKE_R_MM1  New State = IKE_R_MM2

Messaggio modalità principale 3 (MM3)

Include:

Individuazione Network Address Translation (NAT)
scambio DH parte 1

*Sep 21 08:33:43.381: ISAKMP (0): received packet from 2001:DB8::2 dport 500 
   sport 500 Global (R) MM_SA_SETUP
*Sep 21 08:33:43.381: ISAKMP: (0):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*Sep 21 08:33:43.381: ISAKMP: (0): Old State = IKE_R_MM2  New State = IKE_R_MM3
*Sep 21 08:33:43.381: ISAKMP: (0): processing KE payload. message ID = 0
*Sep 21 08:33:43.393: ISAKMP: (0): processing NONCE payload. message ID = 0
*Sep 21 08:33:43.393: ISAKMP: (0):found peer pre-shared key matching 2001: 
   DB8::2
*Sep 21 08:33:43.393: ISAKMP: (1011): processing vendor id payload
*Sep 21 08:33:43.393: ISAKMP: (1011): vendor ID is DPD
*Sep 21 08:33:43.393: ISAKMP: (1011): processing vendor id payload
*Sep 21 08:33:43.393: ISAKMP: (1011): speaking to another IOS box!
*Sep 21 08:33:43.393: ISAKMP: (1011): processing vendor id payload
*Sep 21 08:33:43.393: ISAKMP: (1011): vendor ID seems Unity/DPD but major 0 
   mismatch
*Sep 21 08:33:43.393: ISAKMP: (1011): vendor ID is XAUTH
*Sep 21 08:33:43.393: ISAKMP: (1011):Input = IKE_MESG_INTERNAL, 
   IKE_PROCESS_MAIN_MODE
*Sep 21 08:33:43.393: ISAKMP: (1011): Old State = IKE_R_MM3  New State = 
   IKE_R_MM3

Messaggio modalità principale 4 (MM4)

Include:

Payload rilevamento NAT
Continuazione dello scambio di DH

*Sep 21 08:33:43.405: ISAKMP: (1011): sending packet to 2001: DB8::2 my_port 
   500 peer_port 500 (R) MM_KEY_EXCH
*Sep 21 08:33:43.405: ISAKMP: (1011): Sending an IKE IPv6 Packet.
*Sep 21 08:33:43.405: ISAKMP: (1011):Input = IKE_MESG_INTERNAL, 
   IKE_PROCESS_COMPLETE
*Sep 21 08:33:43.405: ISAKMP: (1011): Old State = IKE_R_MM3  New State = 
   IKE_R_MM4

Messaggio modalità principale 5 (MM5) - L'iniziatore invia la propria identità

Include:

Informazioni sull'identità locale
Chiave

*Sep 21 08:33:43.425: ISAKMP (1011): received packet from 2001: DB8::2 dport 
   500 sport 500 Global (R) MM_KEY_EXCH
*Sep 21 08:33:43.425: ISAKMP: (1011):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*Sep 21 08:33:43.425: ISAKMP: (1011): Old State = IKE_R_MM4  New State = 
   IKE_R_MM5

*Sep 21 08:33:43.425: ISAKMP: (1011): processing ID payload. message ID = 0
*Sep 21 08:33:43.425: ISAKMP (1011): ID payload
        next-payload : 8
        type         : 5
        address      : 2001: DB8::2
        protocol     : 17
        port         : 500
        length       : 24
*Sep 21 08:33:43.425: ISAKMP: (0):: peer matches *none* of the profiles
*Sep 21 08:33:43.425: ISAKMP: (1011): processing HASH payload. message ID = 0
*Sep 21 08:33:43.425: ISAKMP: (1011): processing NOTIFY INITIAL_CONTACT 
   protocol 1 spi 0, message ID = 0, sa = 0x6D12A00
*Sep 21 08:33:43.425: ISAKMP: (1011): SA authentication status: authenticated
*Sep 21 08:33:43.425: ISAKMP: (1011): SA has been authenticated with 2001: 
   DB8::2
*Sep 21 08:33:43.425: ISAKMP: (1011): SA authentication status: authenticated
*Sep 21 08:33:43.425: ISAKMP: (1011): Process initial contact, bring down 
   existing phase 1 and 2 SA's with local 2001: DB8::3 remote 2001: DB8::2 
   remote port 500
*Sep 21 08:33:43.425: ISAKMP: Trying to insert a peer 2001: DB8::3/2001: 
   DB8::2/500/,  and inserted successfully 8E45588.
*Sep 21 08:33:43.425: ISAKMP: (1011):Input = IKE_MESG_INTERNAL, 
   IKE_PROCESS_MAIN_MODE
*Sep 21 08:33:43.425: ISAKMP: (1011): Old State = IKE_R_MM5  New State = 
   IKE_R_MM5

Messaggio modalità principale 6 (MM6) - Il risponditore invia la propria identità. Completamento della fase 1.

Include:

Identità remota inviata dal peer
Decisione finale sul gruppo di tunnel da scegliere

*Sep 21 08:33:43.425: IPSEC(key_engine): got a queue event with 1 KMI message(s)
*Sep 21 08:33:43.425: ISAKMP: (1011): SA is doing pre-shared key authentication
   using id type ID_IPV6_ADDR
*Sep 21 08:33:43.425: ISAKMP (1011): ID payload
        next-payload : 8
        type         : 5
        address      : 2001: DB8::3
        protocol     : 17
        port         : 500
        length       : 24
*Sep 21 08:33:43.425: ISAKMP: (1011):Total payload length: 24
*Sep 21 08:33:43.425: ISAKMP: (1011): sending packet to 2001: DB8::2 my_port 
   500 peer_port 500 (R) MM_KEY_EXCH
*Sep 21 08:33:43.425: ISAKMP: (1011): Sending an IKE IPv6 Packet.
*Sep 21 08:33:43.425: ISAKMP: (1011):Input = IKE_MESG_INTERNAL, 
   IKE_PROCESS_COMPLETE
*Sep 21 08:33:43.425: ISAKMP: (1011): Old State = IKE_R_MM5  New State = 
   IKE_P1_COMPLETE

Configurazione correlata:

crypto isakmp identity ...

Messaggio 1 modalità rapida (QM1)

*Sep 21 08:33:43.433: ISAKMP (1011): received packet from 2001: DB8::2 dport 
   500 sport 500 Global (R) QM_IDLE
*Sep 21 08:33:43.433: ISAKMP: set new node 1371333358 to QM_IDLE
*Sep 21 08:33:43.433: ISAKMP: (1011): processing HASH payload. message ID = 
   1371333358
*Sep 21 08:33:43.433: ISAKMP: (1011): processing SA payload. message ID = 
   1371333358
*Sep 21 08:33:43.433: ISAKMP: (1011):Checking IPSec proposal 1
*Sep 21 08:33:43.433: ISAKMP: transform 1, ESP_AES
*Sep 21 08:33:43.433: ISAKMP:   attributes in transform:
*Sep 21 08:33:43.433: ISAKMP:      encaps is 1 (Tunnel)
*Sep 21 08:33:43.433: ISAKMP:      SA life type in seconds
*Sep 21 08:33:43.433: ISAKMP:      SA life duration (basic) of 3600
*Sep 21 08:33:43.433: ISAKMP:      SA life type in kilobytes
*Sep 21 08:33:43.433: ISAKMP:      SA life duration (VPI) of  0x0 0x46 0x50 0x0
*Sep 21 08:33:43.433: ISAKMP:      authenticator is HMAC-SHA
*Sep 21 08:33:43.433: ISAKMP:      key length is 128
*Sep 21 08:33:43.433: ISAKMP: (1011):atts are acceptable.
*Sep 21 08:33:43.433: IPSEC(validate_proposal_request): proposal part #1
*Sep 21 08:33:43.433: IPSEC(validate_proposal_request): proposal part #1,
  (key eng. msg.) INBOUND local= 2001: DB8::3:0, remote= 2001: DB8::2:0,
    local_proxy= ::/0/256/0,
    remote_proxy= ::/0/256/0,
    protocol= ESP, transform= NONE  (Tunnel),
    lifedur= 0s and 0kb,
    spi= 0x0(0), conn_id= 0, keysize= 128, flags= 0x0
*Sep 21 08:33:43.433: ISAKMP: (1011): processing NONCE payload. message ID = 
   1371333358
*Sep 21 08:33:43.433: ISAKMP: (1011): processing ID payload. message ID = 
   1371333358
*Sep 21 08:33:43.433: ISAKMP: (1011): processing ID payload. message ID = 
   1371333358
*Sep 21 08:33:43.433: ISAKMP: (1011):QM Responder gets spi
*Sep 21 08:33:43.433: ISAKMP: (1011):Node 1371333358, Input = 
   IKE_MESG_FROM_PEER, IKE_QM_EXCH
*Sep 21 08:33:43.433: ISAKMP: (1011): Old State = IKE_QM_READY  New State = 
   IKE_QM_SPI_STARVE

Configurazione pertinente:

tunnel mode ipsec ipv6

Messaggio 2 modalità rapida (QM2)

Include:

L'estremità remota invia i parametri
Viene scelta la durata più breve tra le due proposte per la fase 2

*Sep 21 08:33:43.433: ISAKMP: (1011): sending packet to 2001: DB8::2 my_port 
   500 peer_port 500 (R) QM_IDLE
*Sep 21 08:33:43.433: ISAKMP: (1011): Sending an IKE IPv6 Packet.
*Sep 21 08:33:43.433: ISAKMP: (1011):Node 1371333358, Input = 
   IKE_MESG_INTERNAL, IKE_GOT_SPI
*Sep 21 08:33:43.433: ISAKMP: (1011): Old State = IKE_QM_SPI_STARVE  New 
   State = IKE_QM_R_QM2
*Sep 21 08:33:43.437: IPSEC(key_engine): got a queue event with 1 KMI message(s)
R3(config-if)#
*Sep 21 08:33:43.437: IPSEC(crypto_ipsec_create_ipsec_sas): Map found 
   Tunnel23-head-0
*Sep 21 08:33:43.437: IPSEC(crypto_ipsec_sa_find_ident_head): reconnecting 
   with the same proxies and peer 2001: DB8::2
*Sep 21 08:33:43.437: IPSEC(create_sa): sa created,
  (sa) sa_dest= 2001: DB8::3, sa_proto= 50,
    sa_spi= 0x221A7153(572158291),
    sa_trans= esp-aes esp-sha-hmac , sa_conn_id= 305
    sa_lifetime(k/sec)= (4608000/3532)
*Sep 21 08:33:43.437: IPSEC(create_sa): sa created,
  (sa) sa_dest= 2001: DB8::2, sa_proto= 50,
    sa_spi= 0x45F16A9A(1173449370),
    sa_trans= esp-aes esp-sha-hmac , sa_conn_id= 306
    sa_lifetime(k/sec)= (4608000/3532)

Configurazione pertinente:

crypto ipsec transform-set TRA esp-aes esp-sha-hmac
mode transport
crypto ipsec profile PRO
set transform-set TRA
interface tunnel23
tunnel mode ipsec ipv6
tunnel protection ipsec profile PRO

QM3 (Quick Mode Message 3) - La seconda fase deve essere completata e l'interfaccia del tunnel deve essere attiva

*Sep 21 08:33:43.437: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel23,
   changed state to up
*Sep 21 08:33:43.437: ISAKMP (1011): received packet from 2001: DB8::2 dport 
   500 sport 500 Global (R) QM_IDLE
*Sep 21 08:33:43.437: ISAKMP: (1011): deleting node 1371333358 error FALSE 
   reason "QM done (await)"
*Sep 21 08:33:43.437: ISAKMP: (1011):Node 1371333358, Input = 
   IKE_MESG_FROM_PEER, IKE_QM_EXCH
*Sep 21 08:33:43.437: ISAKMP: (1011): Old State = IKE_QM_R_QM2  New State = 
   IKE_QM_PHASE2_COMPLETE
*Sep 21 08:33:43.437: IPSEC(key_engine): got a queue event with 1 KMI message(s
*Sep 21 08:33:43.437: IPSEC(key_engine_enable_outbound): rec'd enable notify 
   from ISAKMP

IOS Router - Iniziatore

Messaggio modalità principale 1 (MM1) - Contatto iniziale

Include:

ID fornitore (VID)
Capacità
Proposte fase 1
Associazione di sicurezza IKE
IPSec crea già un modello per le associazioni di protezione

*Sep 21 08:33:43.245: %CRYPTO-6-ISAKMP_ON_OFF: ISAKMP is ON
*Sep 21 08:33:43.245: IPSEC(sa ident sadb root initialize created IPv6 ACL %s) 
   : Tunnel23-head-0-65537-Tunnel23-head-0-ACL-6-IPSECV6-ACL
*Sep 21 08:33:43.245: IPSEC(recalculate_mtu) : reset sadb_root 79E82A8 mtu to 
   1500
*Sep 21 08:33:43.245: IPSEC(adjust_mtu) : adjusting ident ip mtu from 1460 to 
   1500,
  (identity) local= 2001: DB8::2:0, remote= 2001: DB8::3:0,
    local_proxy= ::/0/256/0,
    remote_proxy= ::/0/256/0
*Sep 21 08:33:43.245: IPSEC(adjust_mtu): adjusting path mtu from 1460 to 1500,
  (identity) local= 2001: DB8::2:0, remote= 2001: DB8::3:0,
    local_proxy= ::/0/256/0,
    remote_proxy= ::/0/256/0
*Sep 21 08:33:43.245: IPSEC(sa_request): ,
  (key eng. msg.) OUTBOUND local= 2001: DB8::2:500, remote= 2001: DB8::3:500,
    local_proxy= ::/0/256/0,
    remote_proxy= ::/0/256/0,
    protocol= ESP, transform= esp-aes esp-sha-hmac  (Tunnel),
    lifedur= 3600s and 4608000kb,
    spi= 0x0(0), conn_id= 0, keysize= 128, flags= 0x0
*Sep 21 08:33:43.245: ISAKMP: (0): SA request profile is (NULL)
*Sep 21 08:33:43.245: ISAKMP: Created a peer struct for 2001: DB8::3, peer port
   500
*Sep 21 08:33:43.245: ISAKMP: New peer created peer = 0x9344BE8 peer_handle = 
   0x80000008
*Sep 21 08:33:43.245: ISAKMP: Locking peer struct 0x9344BE8, refcount 1 for 
   isakmp_initiator
*Sep 21 08:33:43.245: ISAKMP: local port 500, remote port 500
*Sep 21 08:33:43.245: ISAKMP: set new node 0 to QM_IDLE
*Sep 21 08:33:43.245: ISAKMP: (0):insert sa successfully sa = 944C840
*Sep 21 08:33:43.245: ISAKMP: (0):Can not start Aggressive mode, trying Main 
   mode.
*Sep 21 08:33:43.245: ISAKMP: (0):found peer pre-shared key matching 2001: 
   DB8::3
*Sep 21 08:33:43.245: ISAKMP: (0):Input = IKE_MESG_FROM_IPSEC, IKE_SA_REQ_MM
*Sep 21 08:33:43.245: ISAKMP: (0): Old State = IKE_READY  New State = IKE_I_MM1
*Sep 21 08:33:43.245: ISAKMP: (0): beginning Main Mode exchange
*Sep 21 08:33:43.245: ISAKMP: (0): sending packet to 2001: DB8::3 my_port 500 
   peer_port 500 (I) MM_NO_STATE
*Sep 21 08:33:43.245: ISAKMP: (0): Sending an IKE IPv6 Packet.

Configurazione pertinente:

crypto isakmp policy 10
authentication pre-share

Messaggio modalità principale 2 (MM2) - Risposta al contatto iniziale

Include:

Il peer sceglie i criteri ISAKMP (Internet Security Association and Key Management Protocol) da utilizzare
SA IKE

*Sep 21 08:33:43.249: ISAKMP (0): received packet from 2001: DB8::3 dport 500 
   sport 500 Global (I) MM_NO_STATE
*Sep 21 08:33:43.249: ISAKMP: (0):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*Sep 21 08:33:43.249: ISAKMP: (0): Old State = IKE_I_MM1  New State = IKE_I_MM2

*Sep 21 08:33:43.249: ISAKMP: (0): processing SA payload. message ID = 0
*Sep 21 08:33:43.249: ISAKMP: (0):found peer pre-shared key matching 2001: 
   DB8::3
*Sep 21 08:33:43.249: ISAKMP: (0): local preshared key found
*Sep 21 08:33:43.249: ISAKMP : Scanning profiles for xauth ...
*Sep 21 08:33:43.249: ISAKMP: (0):Checking ISAKMP transform 1 against priority 
   10 policy
*Sep 21 08:33:43.249: ISAKMP:      encryption DES-CBC
*Sep 21 08:33:43.249: ISAKMP:      hash SHA
*Sep 21 08:33:43.249: ISAKMP:      default group 1
*Sep 21 08:33:43.249: ISAKMP:      auth pre-share
*Sep 21 08:33:43.249: ISAKMP:      life type in seconds
*Sep 21 08:33:43.249: ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80
*Sep 21 08:33:43.249: ISAKMP: (0):atts are acceptable. Next payload is 0
*Sep 21 08:33:43.249: ISAKMP: (0):Acceptable atts:actual life: 0
*Sep 21 08:33:43.249: ISAKMP: (0):Acceptable atts:life: 0
*Sep 21 08:33:43.249: ISAKMP: (0):Fill atts in sa vpi_length:4
*Sep 21 08:33:43.249: ISAKMP: (0):Fill atts in sa life_in_seconds:86400
*Sep 21 08:33:43.249: ISAKMP: (0):Returning Actual lifetime: 86400
*Sep 21 08:33:43.249: ISAKMP: (0):: Started lifetime timer: 86400.

*Sep 21 08:33:43.249: ISAKMP: (0):Input = IKE_MESG_INTERNAL, 
   IKE_PROCESS_MAIN_MODE
*Sep 21 08:33:43.249: ISAKMP: (0): Old State = IKE_I_MM2  New State = 
   IKE_I_MM2

Messaggio 3 in modalità principale (MM3) - Rilevamento NAT e scambio Diffie-Hellman

Include:

Payload e hash di individuazione NAT
Avvio scambio DH
Supporto Dead Peer Detection (DPD)

*Sep 21 08:33:43.249: ISAKMP: (0): sending packet to 2001: DB8::3 my_port 500 
   peer_port 500 (I) MM_SA_SETUP
*Sep 21 08:33:43.249: ISAKMP: (0): Sending an IKE IPv6 Packet.
*Sep 21 08:33:43.249: ISAKMP: (0):Input = IKE_MESG_INTERNAL, 
   IKE_PROCESS_COMPLETE
*Sep 21 08:33:43.249: ISAKMP: (0): Old State = IKE_I_MM2  New State = IKE_I_MM3

Messaggio 4 in modalità principale (MM4) - Rilevamento NAT e scambio Diffie-Hellman

Include:

Payload di individuazione NAT
Avvio scambio DH
VID aggiuntivi (DPD, supporto Unity)
Conoscenza di un altro dispositivo IOS

*Sep 21 08:33:43.273: ISAKMP (0): received packet from 2001: DB8::3 dport 500 
   sport 500 Global (I) MM_SA_SETUP
*Sep 21 08:33:43.273: ISAKMP: (0):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*Sep 21 08:33:43.273: ISAKMP: (0): Old State = IKE_I_MM3  New State = IKE_I_MM4

*Sep 21 08:33:43.273: ISAKMP: (0): processing KE payload. message ID = 0
*Sep 21 08:33:43.281: ISAKMP: (0): processing NONCE payload. message ID = 0
*Sep 21 08:33:43.281: ISAKMP: (0):found peer pre-shared key matching 2001: 
   DB8::3
*Sep 21 08:33:43.281: ISAKMP: (1011): processing vendor id payload
*Sep 21 08:33:43.281: ISAKMP: (1011): vendor ID is Unity
*Sep 21 08:33:43.281: ISAKMP: (1011): processing vendor id payload
*Sep 21 08:33:43.281: ISAKMP: (1011): vendor ID is DPD
*Sep 21 08:33:43.281: ISAKMP: (1011): processing vendor id payload
*Sep 21 08:33:43.281: ISAKMP: (1011): speaking to another IOS box!
*Sep 21 08:33:43.281: ISAKMP: (1011):Input = IKE_MESG_INTERNAL, 
   IKE_PROCESS_MAIN_MODE
*Sep 21 08:33:43.281: ISAKMP: (1011): Old State = IKE_I_MM4  New State = 
   IKE_I_MM4

Messaggio modalità principale 5 (MM5) - Invia identità

Include:

Identità peer remota (ID)

*Sep 21 08:33:43.293: ISAKMP: (1011): Send initial contact
*Sep 21 08:33:43.293: ISAKMP: (1011): SA is doing pre-shared key authentication
   using id type ID_IPV6_ADDR
*Sep 21 08:33:43.293: ISAKMP (1011): ID payload
        next-payload : 8
        type         : 5
        address      : 2001: DB8::2
        protocol     : 17
        port         : 500
        length       : 24
*Sep 21 08:33:43.293: ISAKMP: (1011):Total payload length: 24
*Sep 21 08:33:43.293: ISAKMP: (1011): sending packet to 2001: DB8::3 my_port 
   500 peer_port 500 (I) MM_KEY_EXCH
*Sep 21 08:33:43.293: ISAKMP: (1011): Sending an IKE IPv6 Packet.
*Sep 21 08:33:43.293: ISAKMP: (1011):Input = IKE_MESG_INTERNAL, 
   IKE_PROCESS_COMPLETE
*Sep 21 08:33:43.293: ISAKMP: (1011): Old State = IKE_I_MM4  New State = 
   IKE_I_MM5

Configurazione pertinente:

crypto isakmp identity ...

Messaggio in modalità principale 6 (MM6) - Identità peer remota, fase 1 stabilita

Include:

Data/ora inizio reimpostazione chiavi
Identità remota (in questo caso un indirizzo)
Decisione di atterrare su un profilo

*Sep 21 08:33:43.297: ISAKMP (1011): received packet from 2001: DB8::3 dport 
   500 sport 500 Global (I) MM_KEY_EXCH
*Sep 21 08:33:43.297: ISAKMP: (1011): processing ID payload. message ID = 0
*Sep 21 08:33:43.297: ISAKMP (1011): ID payload
        next-payload : 8
        type         : 5
        address      : 2001: DB8::3
        protocol     : 17
        port         : 500
        length       : 24
*Sep 21 08:33:43.297: ISAKMP: (0):: peer matches *none* of the profiles
*Sep 21 08:33:43.297: ISAKMP: (1011): processing HASH payload. message ID = 0
*Sep 21 08:33:43.297: ISAKMP: (1011): SA authentication status: authenticated
*Sep 21 08:33:43.297: ISAKMP: (1011): SA has been authenticated with 2001: 
   DB8::3
*Sep 21 08:33:43.297: ISAKMP: Trying to insert a peer 2001: DB8::2/2001: 
   DB8::3/500/,  and inserted successfully 9344BE8.
*Sep 21 08:33:43.297: ISAKMP: (1011):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*Sep 21 08:33:43.297: ISAKMP: (1011): Old State = IKE_I_MM5  New State = 
   IKE_I_MM6

*Sep 21 08:33:43.297: ISAKMP: (1011):Input = IKE_MESG_INTERNAL, 
   IKE_PROCESS_MAIN_MODE
*Sep 21 08:33:43.297: ISAKMP: (1011): Old State = IKE_I_MM6  New State = 
   IKE_I_MM6

*Sep 21 08:33:43.301: ISAKMP: (1011):Input = IKE_MESG_INTERNAL, 
   IKE_PROCESS_COMPLETE
*Sep 21 08:33:43.301: ISAKMP: (1011): Old State = IKE_I_MM6  New State = 
   IKE_P1_COMPLETE

Configurazione pertinente:

crypto isakmp identity ...

Messaggio 1 in modalità rapida (QM1) - Inizio fase 2 per peer

Include:

ID proxy remoti e locali
Set di trasformazioni

*Sep 21 08:33:43.301: ISAKMP: (1011):beginning Quick Mode exchange, M-ID of 
   1371333358*Sep 21 08:33:43.301: ISAKMP: (1011):QM Initiator gets spi
*Sep 21 08:33:43.301: ISAKMP: (1011): sending packet to 2001: DB8::3 my_port 
   500 peer_port 500 (I) QM_IDLE
*Sep 21 08:33:43.301: ISAKMP: (1011): Sending an IKE IPv6 Packet.
*Sep 21 08:33:43.301: ISAKMP: (1011):Node 1371333358, Input = 
   IKE_MESG_INTERNAL, IKE_INIT_QM
*Sep 21 08:33:43.301: ISAKMP: (1011): Old State = IKE_QM_READY  New State = 
   IKE_QM_I_QM1
*Sep 21 08:33:43.301: ISAKMP: (1011):Input = IKE_MESG_INTERNAL, 
   IKE_PHASE1_COMPLETE
*Sep 21 08:33:43.301: ISAKMP: (1011): Old State = IKE_P1_COMPLETE  New State = 
   IKE_P1_COMPLETE

Configurazione pertinente:

crypto ipsec transform-set TRA esp-aes esp-sha-hmac
mode transport

crypto ipsec profile PRO
set transform-set TRA

Messaggio 2 modalità rapida (QM2)

Include:

Conferma delle identità proxy
Tipo di tunnel
Impostazioni PFS (Perfect Forwarding Secrecy)

*Sep 21 08:33:43.305: ISAKMP (1011): received packet from 2001: DB8::3 dport 
   500 sport 500 Global (I) QM_IDLE
*Sep 21 08:33:43.305: ISAKMP: (1011): processing HASH payload. message ID = 
   1371333358
*Sep 21 08:33:43.305: ISAKMP: (1011): processing SA payload. message ID = 
   1371333358
*Sep 21 08:33:43.305: ISAKMP: (1011):Checking IPSec proposal 1
*Sep 21 08:33:43.305: ISAKMP: transform 1, ESP_AES
*Sep 21 08:33:43.305: ISAKMP:   attributes in transform:
*Sep 21 08:33:43.305: ISAKMP:      encaps is 1 (Tunnel)
*Sep 21 08:33:43.305: ISAKMP:      SA life type in seconds
*Sep 21 08:33:43.305: ISAKMP:      SA life duration (basic) of 3600
*Sep 21 08:33:43.305: ISAKMP:      SA life type in kilobytes
*Sep 21 08:33:43.305: ISAKMP:      SA life duration (VPI) of  0x0 0x46 0x50 0x0
*Sep 21 08:33:43.305: ISAKMP:      authenticator is HMAC-SHA
*Sep 21 08:33:43.305: ISAKMP:      key length is 128
*Sep 21 08:33:43.305: ISAKMP: (1011):atts are acceptable.
*Sep 21 08:33:43.305: IPSEC(validate_proposal_request): proposal part #1
*Sep 21 08:33:43.305: IPSEC(validate_proposal_request): proposal part #1,
  (key eng. msg.) INBOUND local= 2001: DB8::2:0, remote= 2001: DB8::3:0,
    local_proxy= ::/0/256/0,
    remote_proxy= ::/0/256/0,
    protocol= ESP, transform= NONE  (Tunnel),
    lifedur= 0s and 0kb,
    spi= 0x0(0), conn_id= 0, keysize= 128, flags= 0x0
*Sep 21 08:33:43.305: ISAKMP: (1011): processing NONCE payload. message ID = 
   1371333358
*Sep 21 08:33:43.305: ISAKMP: (1011): processing ID payload. message ID = 
   1371333358
*Sep 21 08:33:43.305: ISAKMP: (1011): processing ID payload. message ID = 
   1371333358

Configurazione pertinente:

crypto ipsec transform-set TRA esp-aes esp-sha-hmac
mode transport

crypto ipsec profile PRO
set transform-set TRA

interface tunnel23
tunnel mode ipsec ipv6
tunnel protection ipsec profile PRO

Messaggio 3 in modalità rapida (QM3) - Fase 2

Include:

Impostazione degli SPI (Security Policy Index) per il passaggio del traffico

*Sep 21 08:33:43.305: ISAKMP: (1011): Sending an IKE IPv6 Packet.
*Sep 21 08:33:43.305: ISAKMP: (1011): deleting node 1371333358 error FALSE 
   reason "No Error"
*Sep 21 08:33:43.305: ISAKMP: (1011):Node 1371333358, Input = 
   IKE_MESG_FROM_PEER, IKE_QM_EXCH
*Sep 21 08:33:43.305: ISAKMP: (1011): Old State = IKE_QM_I_QM1  New State = 
   IKE_QM_PHASE2_COMPLETE
*Sep 21 08:33:43.305: IPSEC(key_engine): got a queue event with 1 KMI message(s)
*Sep 21 08:33:43.305: IPSEC(crypto_ipsec_create_ipsec_sas): Map found 
   Tunnel23-head-0
*Sep 21 08:33:43.305: IPSEC(crypto_ipsec_sa_find_ident_head): reconnecting 
   with the same proxies and peer 2001: DB8::3
*Sep 21 08:33:43.305: IPSEC(create_sa): sa created,
  (sa) sa_dest= 2001: DB8::2, sa_proto= 50,
    sa_spi= 0x45F16A9A(1173449370),
    sa_trans= esp-aes esp-sha-hmac , sa_conn_id= 305
    sa_lifetime(k/sec)= (4608000/3439)
*Sep 21 08:33:43.305: IPSEC(create_sa): sa created,
  (sa) sa_dest= 2001: DB8::3, sa_proto= 50,
    sa_spi= 0x221A7153(572158291),
    sa_trans= esp-aes esp-sha-hmac , sa_conn_id= 306
    sa_lifetime(k/sec)= (4608000/3439)
R2(config-if)#
*Sep 21 08:33:43.309: %LINEPROTO-5-UPDOWN: Line protocol on Interface 
   Tunnel23, changed state to up

Verifica tunnel

sh crypto ipsec sa

interface: Tunnel23
    Crypto map tag: Tunnel23-head-0, local addr 2001: DB8::2

   protected vrf: (none)
   local  ident (addr/mask/prot/port): (::/0/0/0)
   remote ident (addr/mask/prot/port): (::/0/0/0)
   current_peer 2001: DB8::3 port 500
     PERMIT, flags={origin_is_acl,}
    #pkts encaps: 4, #pkts encrypt: 4, #pkts digest: 4
    #pkts decaps: 4, #pkts decrypt: 4, #pkts verify: 4
    #pkts compressed: 0, #pkts decompressed: 0
    #pkts not compressed: 0, #pkts compr. failed: 0
    #pkts not decompressed: 0, #pkts decompress failed: 0
    #send errors 0, #recv errors 0

     local crypto endpt.: 2001: DB8::2,
     remote crypto endpt.: 2001: DB8::3
     path mtu 1500, ipv6 mtu 1500, ipv6 mtu idb Ethernet0/0
     current outbound spi: 0x221A7153(572158291)
     PFS (Y/N): N, DH group: none

     inbound esp sas:
      spi: 0x45F16A9A(1173449370)
        transform: esp-aes esp-sha-hmac ,
        in use settings ={Tunnel, }
        conn id: 305, flow_id: SW:305, sibling_flags 80000041, crypto map: 
           Tunnel23-head-0
        sa timing: remaining key lifetime (k/sec): (4183789/3408)
        IV size: 16 bytes
        replay detection support: Y
        Status: ACTIVE

     inbound ah sas:

     inbound pcp sas:

     outbound esp sas:
      spi: 0x221A7153(572158291)
        transform: esp-aes esp-sha-hmac ,
        in use settings ={Tunnel, }
        conn id: 306, flow_id: SW:306, sibling_flags 80000041, crypto map: 
           Tunnel23-head-0
        sa timing: remaining key lifetime (k/sec): (4183790/3408)
        IV size: 16 bytes
        replay detection support: Y
        Status: ACTIVE

R2(config-if)#do ping fe80::23:3
Output Interface: tunnel23
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FE80::23:3, timeout is 2 seconds:
Packet sent with a source address of FE80::23:2%Tunnel23
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/11/20 ms
R2(config-if)#do sh crypto ipsec sa | i caps|ident
   local  ident (addr/mask/prot/port): (::/0/0/0)
   remote ident (addr/mask/prot/port): (::/0/0/0)
    #pkts encaps: 9, #pkts encrypt: 9, #pkts digest: 9
    #pkts decaps: 9, #pkts decrypt: 9, #pkts verify: 9