Débogues IOS IPSec et IKE - Dépannage du mode principal IKEv1

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Mis à jour:14 novembre 2013
ID du document:113594

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À propos de cette traduction

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Introduction

Ce document fournit des informations permettant de comprendre les débogages sur le logiciel Cisco IOS® lorsque le mode principal et la clé prépartagée (PSK) sont utilisés.

Ce document fournit également des informations sur la façon de traduire certaines lignes de débogage dans une configuration.

Ces sujets ne sont pas abordés :

  • Passage du trafic après établissement du tunnel
  • Concepts de base d'IPSec ou d'Internet Key Exchange (IKE)

Problème principal

Les débogages IKE et IPSec ont tendance à être cryptés. Le centre d'assistance technique Cisco (TAC) utilise souvent ces bogues pour comprendre où se trouve un problème avec l'établissement du tunnel VPN IPSec.

Scénario

Le mode principal est généralement utilisé entre des tunnels LAN à LAN, ou en cas d'accès distant (ezvpn) lorsque des certificats sont utilisés pour l'authentification.

Ces débogages proviennent d'un périphérique Cisco IOS qui exécute la version 15.2(1)T du logiciel.

Ce document décrit deux scénarios principaux :

  • Côté initiateur IOS
  • Côté répondeur IOS

Dans ce document, un tunnel basé sur VTI entre deux sites est établi, basé sur IPv6.

Remarques :

Utilisez l'outil de recherche de commandes (clients enregistrés uniquement) afin d'obtenir plus d'informations sur les commandes utilisées dans ce document.

Référez-vous aux informations importantes sur les commandes de débogage avant d'utiliser les commandes de débogage.

Débogues utilisés

  • debug crypto isakmp
  • debug crypto ipsec
  • debug crypto kmi

Configuration du routeur IOS

Configuration du chiffrement

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

Autre côté

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

Débogage

Côté répondeur IOS

Message du mode principal 1 (MM1)

La proposition initiale pour IKE inclut :

  • Chiffrement
  • Hachage
  • Groupe Diffie-Hellman (DH)
  • Durée de vie
*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

Configuration associée :

crypto isakmp policy 10
authentication pre-share

Message en mode principal 2 (MM2) - Envoi de notre réponse

*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

Message du mode principal 3 (MM3)

Comprend :

  • Découverte de la traduction d'adresses de réseau (NAT)
  • Partie 1 de l'échange DH
*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

Message du mode principal 4 (MM4)

Comprend :

  • Charge utile de détection NAT
  • Poursuite de l'échange 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

Message en mode principal 5 (MM5) - L'initiateur envoie son identité

Comprend :

  • Informations d'identité locales
  • Key (Clé)
*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

Message en mode principal 6 (MM6) - Le répondeur envoie son identité. Fin de la phase 1.

Comprend :

  • Identité distante envoyée par l'homologue
  • Décision finale concernant le groupe de tunnels à choisir
*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

Configuration associée :

crypto isakmp identity ...

Message 1 en mode rapide (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

Configuration appropriée :

tunnel mode ipsec ipv6

Message 2 en mode rapide (QM2)

Comprend :

  • L'extrémité distante envoie des paramètres
  • Le plus court des deux durées de vie proposées pour la phase 2 est choisi
*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)

Configuration appropriée :

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

Message 3 en mode rapide (QM3) - La phase 2 doit être terminée et l'interface de tunnel activée

*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

Routeur IOS - Initiateur

Message du mode principal 1 (MM1) - Contact initial

Comprend :

  • ID fournisseur (VID)
  • Capacités
  • Propositions de la phase 1
  • Association de sécurité IKE (SA)
  • IPSec crée déjà un modèle pour les SA
*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.

Configuration appropriée :

crypto isakmp policy 10
authentication pre-share

Message en mode principal 2 (MM2) - Réponse au contact initial

Comprend :

  • Peer choisit la politique ISAKMP (Internet Security Association and Key Management Protocol) à utiliser
  • 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

Message en mode principal 3 (MM3) - NAT Discovery et Diffie-Hellman Exchange

Comprend :

  • Charge utile de découverte NAT et hachage
  • Initiation à l'échange DH
  • Prise en charge DPD (Dead Peer Detection)
*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

Message du mode principal 4 (MM4) - Découverte NAT et Échange Diffie-Hellman

Comprend :

  • Charge utile de découverte NAT
  • Initiation à l'échange DH
  • VID supplémentaires (DPD, prise en charge Unity)
  • Connaissance de la communication avec un autre périphérique 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

Message en mode principal 5 (MM5) - Envoyer l'identité

Comprend :

  • Identité d'homologue distant (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

Configuration appropriée :

crypto isakmp identity ...

Message en mode principal 6 (MM6) - Identité d'homologue distant, phase 1 établie

Comprend :

  • Heures de retouche démarrées
  • Identité distante (dans ce cas une adresse)
  • Décision d'atterrir sur un profil
*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

Configuration appropriée :

crypto isakmp identity ...

Message en mode rapide 1 (QM1) - L'homologue démarre la phase 2

Comprend :

  • ID de proxy distant et local
  • Jeu(s) de transformation
*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

Configuration appropriée :

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

crypto ipsec profile PRO
set transform-set TRA

Message 2 en mode rapide (QM2)

Comprend :

  • Confirmation des identités de proxy
  • Type de tunnel
  • Paramètres 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

Configuration appropriée :

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

Message 3 en mode rapide (QM3) - Établissement de la phase 2

Comprend :

  • Définition d'index de stratégie de sécurité (SPI) pour transmettre le trafic
*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

Vérification du 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

Le tunnel est actif et passe le trafic.

Informations connexes

Historique de révision

Révision Date de publication Commentaires
1.0
14-Nov-2013
Première publication
TAC Authored

Contribution d’experts de Cisco

  • Marcin Latosiewicz, Jay Young, and Atri Basu
    Cisco TAC Engineers.

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