Configuración del hub y spoke de router a router IPSec con comunicación entre radios

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Actualizado:18 de enero de 2007
ID del documento:7912

Lenguaje no discriminatorio

El conjunto de documentos para este producto aspira al uso de un lenguaje no discriminatorio. A los fines de esta documentación, "no discriminatorio" se refiere al lenguaje que no implica discriminación por motivos de edad, discapacidad, género, identidad de raza, identidad étnica, orientación sexual, nivel socioeconómico e interseccionalidad. Puede haber excepciones en la documentación debido al lenguaje que se encuentra ya en las interfaces de usuario del software del producto, el lenguaje utilizado en función de la documentación de la RFP o el lenguaje utilizado por un producto de terceros al que se hace referencia. Obtenga más información sobre cómo Cisco utiliza el lenguaje inclusivo.

Acerca de esta traducción

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Introducción

Esta configuración de ejemplo muestra un diseño IPsec de hub y spoke entre tres routers. Esta configuración difiere de otras configuraciones de hub y spoke porque en este ejemplo se ha activado la comunicación entre los sitios spoke pasando a través del hub. Es decir, no hay un túnel IPsec directo entre los dos routers spoke. Todos los paquetes se envían a través del túnel al router hub, donde se redistribuyen hacia el túnel IPsec compartido con el otro router spoke. Esta configuración es posible como resultado de la resolución al ID de bug de Cisco CSCdp09904 (sólo clientes registrados) . Este arreglo se integró en Cisco IOS® Software Release 12.2(5) y esta versión es el requisito mínimo para esta configuración.

Para configurar el túnel de encapsulación de ruteo genérico (GRE) sobre IPSec con OSPF, consulte Configuración de un Túnel GRE sobre IPSec con OSPF.

Para configurar la configuración básica del firewall Cisco IOS® en un túnel GRE con traducción de direcciones de red (NAT), consulte Configuración de IPSec de router a router (claves previamente compartidas) en el túnel GRE con firewall IOS y NAT.

Prerequisites

Requirements

Este documento requiere una comprensión básica del protocolo IPSec Consulte Introducción al Cifrado de Seguridad IP (IPSec) para obtener más información sobre IPsec.

El objetivo de este documento es asegurar que el cifrado se realice entre estos routers:

  • 172.16.1.0/24 (Spoke 1) a 10.1.1.0/24 (Hub)

  • 192.168.1.0/24 (Spoke 2) a 10.1.1.0/24 (Hub)

  • 172.16.1.0/24 (Spoke 1) a 192.168.1.0/24 (Spoke 2)

Componentes Utilizados

La información que contiene este documento se basa en estas versiones de software y hardware.

  • Versión 12.2(24a) del software del IOS de Cisco (c2500-ik8s-l.122-24a.bin)

  • Routers Cisco 2500

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

Convenciones

Consulte Convenciones de Consejos TécnicosCisco para obtener más información sobre las convenciones del documento.

Configurar

En esta sección encontrará la información para configurar las funciones descritas en este documento.

Nota: Use la Command Lookup Tool (sólo clientes registrados) para obtener más información sobre los comandos utilizados en este documento.

Diagrama de la red

Este documento utiliza la configuración de red que se muestra en el siguiente diagrama.

VPNL2L.gif

Nota: Los esquemas de direccionamiento IP utilizados en esta configuración no son legalmente enrutables en Internet. Son direcciones RFC 1918 leavingcisco.com que se han utilizado en un entorno de laboratorio.

Configuraciones

Este documento usa estas configuraciones.

El comando show running-config muestra la configuración en ejecución en el router.

Router del eje de conexión 
Hub#show running-config
Building configuration...
Current configuration : 1466 bytes
!
version 12.2

service timestamps debug datetime msec
service timestamps log uptime
no service password-encryption
!
hostname Hub
!


!
ip subnet-zero
!

!

!--- Configuration for IKE policies.

crypto isakmp policy 10

!--- Enables the IKE policy configuration (config-isakmp) !--- command mode, where you can specify the parameters that !--- are used during an IKE negotiation.

hash md5
authentication pre-share
crypto isakmp key cisco123 address 10.1.2.1
crypto isakmp key cisco123 address 10.1.3.1

!--- Specifies the preshared key "cisco123" which should !--- be identical at both peers. This is a global !--- configuration mode command.

 
!

!--- Configuration for IPsec policies.

crypto ipsec transform-set myset esp-des esp-md5-hmac 

!--- Enables the crypto transform configuration mode, !--- where you can specify the transform sets that are used !--- during an IPsec negotiation. 

!
crypto map mymap 10 ipsec-isakmp 

!--- Indicates that IKE is used to establish !--- the IPsec security association for protecting the !--- traffic specified by this crypto map entry.

set peer 10.1.2.1

!--- Sets the IP address of the remote end.

set transform-set myset 

!--- Configures IPsec to use the transform-set !--- "myset" defined earlier in this configuration.

match address 110

!--- Specifies the traffic to be encrypted.

crypto map mymap 20 ipsec-isakmp 
set peer 10.1.3.1
set transform-set myset 
match address 120
!
!
!
!
interface Ethernet0
ip address 10.1.1.1 255.255.255.0
!
interface Ethernet1
ip address 10.1.4.1 255.255.255.0
no ip route-cache

!--- You must enable process switching for IPsec !--- to encrypt outgoing packets. This command disables fast switching.

no ip mroute-cache
crypto map mymap

!--- Configures the interface to use the !--- crypto map "mymap" for IPsec.

!


!--- Output suppressed.

ip classless
ip route 172.16.1.0 255.255.255.0 Ethernet1
ip route 192.168.1.0 255.255.255.0 Ethernet1
ip route 10.1.0.0 255.255.0.0 Ethernet1
ip http server

!
access-list 110 permit ip 10.1.1.0 0.0.0.255 172.16.1.0 0.0.0.255
access-list 110 permit ip 192.168.1.0 0.0.0.255 172.16.1.0 0.0.0.255
access-list 120 permit ip 10.1.1.0 0.0.0.255 192.168.1.0 0.0.0.255
access-list 120 permit ip 172.16.1.0 0.0.0.255 192.168.1.0 0.0.0.255

!--- This crypto ACL-permit identifies the !--- matching traffic flows to be protected via encryption.

Router Spoke 1 
Spoke1#show running-config
Building configuration...
Current configuration : 1203 bytes
!
version 12.2

service timestamps debug datetime msec
service timestamps log uptime
no service password-encryption
!
hostname Spoke1
!
enable secret 5 $1$DOX3$rIrxEnTVTw/7LNbxi.akz0

!
ip subnet-zero
no ip domain-lookup
!

!
crypto isakmp policy 10
hash md5
authentication pre-share
crypto isakmp key cisco123 address 10.1.4.1
! 
!
crypto ipsec transform-set myset esp-des esp-md5-hmac 
!
crypto map mymap 10 ipsec-isakmp 
set peer 10.1.4.1
set transform-set myset 
match address 110
!
!
!
!
interface Ethernet0
ip address 172.16.1.1 255.255.255.0
!
interface Ethernet1
ip address 10.1.2.1 255.255.255.0
no ip route-cache
no ip mroute-cache
crypto map mymap
!

.
.

!--- Output suppressed.

.
.
ip classless

ip route 192.168.1.0 255.255.255.0 Ethernet1
ip route 10.1.0.0 255.255.0.0 Ethernet1
no ip http server

!
access-list 110 permit ip 172.16.1.0 0.0.0.255 10.1.1.0 0.0.0.255
access-list 110 permit ip 172.16.1.0 0.0.0.255 192.168.1.0 0.0.0.255
!

end
2509a#

Router Spoke 2 
Spoke2#show running-config
Building configuration...
Current configuration : 1117 bytes
!
version 12.2

service timestamps debug datetime msec
service timestamps log uptime
service password-encryption
!
hostname Spoke2
!

!
ip subnet-zero
no ip domain-lookup
!

!
crypto isakmp policy 10
hash md5
authentication pre-share
crypto isakmp key cisco123 address 10.1.4.1
!
! 
crypto ipsec transform-set myset esp-des esp-md5-hmac 
!
crypto map mymap 10 ipsec-isakmp 
set peer 10.1.4.1
set transform-set myset 
match address 120
!
!
!
!
interface Ethernet0
ip address 192.168.1.1 255.255.255.0
!
interface Ethernet1
ip address 10.1.3.1 255.255.255.0

!--- No ip route-cache.

no ip mroute-cache
crypto map mymap
!

.
.

!--- Output suppressed.

.
.
ip classless

ip route 172.16.0.0 255.255.0.0 Ethernet1
ip route 10.1.0.0 255.255.0.0 Ethernet1
no ip http server

!
access-list 120 permit ip 192.168.1.0 0.0.0.255 172.16.1.0 0.0.0.255
access-list 120 permit ip 192.168.1.0 0.0.0.255 10.1.1.0 0.0.0.255
!

end
VPN2509#

Añadir otro radio

Si necesita agregar otro router spoke (spoke3) al router hub existente además de spoke1 y spoke2, todo lo que se necesita es la creación de un nuevo túnel de LAN a LAN (L2L) del hub al spoke3. Sin embargo, dado que sólo se puede configurar un mapa criptográfico por interfaz física, debe utilizar el mismo nombre de mapa criptográfico al agregar este túnel. Esto es posible cuando se utilizan números de línea diferentes para cada sitio remoto.

Nota: Es posible que el mapa criptográfico deba eliminarse y aplicarse de nuevo a la interfaz cuando se agrega la nueva entrada de túnel. Cuando se elimina el mapa criptográfico, se borran todos los túneles activos.

Router del eje de conexión 
Hub#show running-config
Building configuration...
Current configuration : 1466 bytes
!
version 12.2

service timestamps debug datetime msec
service timestamps log uptime
no service password-encryption
!
hostname Hub
!


!
ip subnet-zero
!

!
crypto isakmp policy 10

hash md5
authentication pre-share
crypto isakmp key cisco123 address 10.1.2.1
crypto isakmp key cisco123 address 10.1.3.1
crypto isakmp key cisco123 address 10.1.5.1
!

crypto ipsec transform-set myset esp-des esp-md5-hmac 
!
crypto map mymap 10 ipsec-isakmp 
set peer 10.1.2.1
set transform-set myset
match address 110

crypto map mymap 20 ipsec-isakmp 
set peer 10.1.3.1
set transform-set myset 
match address 120


!--- It is important to specify crypto map line number 30 for !--- the Spoke 3 router with the same crypto map name "mymap" 

crypto map mymap 30 ipsec-isakmp 
set peer 10.1.5.1
set transform-set myset 
match address 130
!
!
!
!
interface Ethernet0
ip address 10.1.1.1 255.255.255.0
!
interface Ethernet1
ip address 10.1.4.1 255.255.255.0
no ip route-cache
no ip mroute-cache


!--- It is important to remove and re-apply the crypto !--- map to this interface if it is used for the termination of other !--- spoke VPN tunnels.


crypto map mymap
!


!--- Output suppressed.

ip classless
ip route 172.16.1.0 255.255.255.0 Ethernet1
ip route 192.168.1.0 255.255.255.0 Ethernet1
ip route 10.1.0.0 255.255.0.0 Ethernet1
ip route 172.16.2.0 255.255.255.0 Ethernet1
ip http server

!
access-list 110 permit ip 10.1.1.0 0.0.0.255 172.16.1.0 0.0.0.255
access-list 110 permit ip 192.168.1.0 0.0.0.255 172.16.1.0 0.0.0.255
access-list 110 permit ip 172.16.2.0 0.0.0.255 172.16.1.0 0.0.0.255
access-list 120 permit ip 10.1.1.0 0.0.0.255 192.168.1.0 0.0.0.255
access-list 120 permit ip 172.16.2.0 0.0.0.255 192.168.1.0 0.0.0.255
access-list 120 permit ip 172.16.1.0 0.0.0.255 192.168.1.0 0.0.0.255
access-list 130 permit ip 10.1.1.0 0.0.0.255 172.16.2.0 0.0.0.255
access-list 130 permit ip 192.168.1.0 0.0.0.255 172.16.2.0 0.0.0.255
access-list 130 permit ip 172.16.1.0 0.0.0.255 172.16.2.0 0.0.0.255

Router Spoke 3 
Spoke3#show running-config
Building configuration...
Current configuration : 1117 bytes
!
version 12.2

service timestamps debug datetime msec
service timestamps log uptime
service password-encryption
!
hostname Spoke3
!

!
ip subnet-zero
no ip domain-lookup
!

!
crypto isakmp policy 10
hash md5
authentication pre-share
crypto isakmp key cisco123 address 10.1.4.1
!
! 
crypto ipsec transform-set myset esp-des esp-md5-hmac 
!
crypto map mymap 10 ipsec-isakmp 
set peer 10.1.4.1
set transform-set myset 
match address 130
!
!
!
!
interface Ethernet0
ip address 172.16.2.1 255.255.255.0
!
interface Ethernet1
ip address 10.1.5.1 255.255.255.0
no ip mroute-cache
crypto map mymap
!

.
.

!--- Output suppressed.

.
.
ip classless

ip route 172.16.0.0 255.255.0.0 Ethernet1
ip route 10.1.0.0 255.255.0.0 Ethernet1
no ip http server

!
access-list 130 permit ip 172.168.2.0 0.0.0.255 172.16.1.0 0.0.0.255
access-list 130 permit ip 172.168.2.0 0.0.0.255 10.1.1.0 0.0.0.255
access-list 130 permit ip 172.168.2.0 0.0.0.255 192.168.1.0 0.0.0.255
!

end
VPN2509#

Verificación

Use esta sección para confirmar que su configuración funciona correctamente.

La herramienta Output Interpreter Tool (clientes registrados solamente) (OIT) soporta ciertos comandos show. Utilice la OIT para ver un análisis del resultado del comando show.

Para verificar esta configuración, intente un comando ping extendido originado en la dirección de interfaz ethernet1 en el Spoke 1, destinado a la dirección de interfaz ethernet1 en el Spoke 2.

  • ping —Se utiliza para diagnosticar la conectividad básica de la red. 

    Spoke1#ping
Protocol [ip]:
Target IP address: 192.168.1.1
Repeat count [5]:
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]: y
Source address or interface: 172.16.1.1
Type of service [0]:
Set DF bit in IP header? [no]:
Validate reply data? [no]:
Data pattern [0xABCD]:
Loose, Strict, Record, Timestamp, Verbose[none]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 64/64/68 ms

  • show crypto ipsec sa —Muestra la configuración utilizada por las asociaciones de seguridad (SA) actuales (IPSec).

  • show crypto isakmp sa — Muestra todas las IKE SAs actuales en un par.

  • show crypto engine connections active: muestra el número de paquetes transmitidos a través de cada SA IPSec.

Ejemplo de resultado del comando show

Este resultado proviene del comando show crypto engine connections active ejecutado en el router Hub. 

Hub#show crypto engine connections active

ID Interface IP-Address State Algorithm Encrypt Decrypt
5 Ethernet0 10.1.4.1 set HMAC_MD5+DES_56_CB 0 0
6 <none> <none>  set HMAC_MD5+DES_56_CB 0 0
2000 Ethernet0 10.1.4.1 set HMAC_MD5+DES_56_CB 0 10
2001 Ethernet0 10.1.4.1 set HMAC_MD5+DES_56_CB 10 0
2002 Ethernet0 10.1.4.1 set HMAC_MD5+DES_56_CB 0 10
2003 Ethernet0 10.1.4.1 set HMAC_MD5+DES_56_CB 10 0

A partir de este ejemplo, puede ver que cada túnel tiene 10 paquetes cifrados y descifrados, lo que demuestra que el tráfico se produjo a través del router hub.

Nota: Se crean dos SA IPsec para cada par (una en cada dirección). Por ejemplo, en el router hub hay cuatro SA IPsec creadas para dos peers.

Troubleshoot

En esta sección encontrará información que puede utilizar para solucionar problemas de configuración.

Comandos para resolución de problemas

Nota: Consulte Información Importante sobre Comandos Debug antes de utilizar los comandos debug.

Ejemplo de resultado del comando debug

Ésta es la salida del router hub de los comandos debug crypto ipsec y debug crypto isakmp. 

*Mar  1 00:03:46.887: ISAKMP (0:0): received packet 
  from 10.1.2.1 (N) NEW SA
*Mar  1 00:03:46.887: ISAKMP: local port 500, remote port 500
*Mar  1 00:03:46.899: ISAKMP (0:1): processing SA payload. message ID = 0
*Mar  1 00:03:46.899: ISAKMP (0:1): found peer pre-shared key matching 10.1.2.1
*Mar  1 00:03:46.903: ISAKMP (0:1): Checking ISAKMP transform 1 against priority
 10 policy
*Mar  1 00:03:46.903: ISAKMP:      encryption DES-CBC
*Mar  1 00:03:46.907: ISAKMP:      hash MD5
*Mar  1 00:03:46.907: ISAKMP:      default group 1
*Mar  1 00:03:46.911: ISAKMP:      auth pre-share
*Mar  1 00:03:46.911: ISAKMP:      life type in seconds
*Mar  1 00:03:46.911: ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80
*Mar  1 00:03:46.915: ISAKMP (0:1): atts are acceptable. Next payload is 0

!--- The initial IKE parameters have been !--- successfully exchanged between Spoke 1 and Hub.

*Mar  1 00:03:48.367: ISAKMP (0:1): SA is doing pre-shared key 
authentication using id type ID_IPV4_ADDR
*Mar  1 00:03:48.371: ISAKMP (0:1): sending packet to 10.1.2.1 (R) MM_SA_SETUP
*Mar  1 00:03:56.895: ISAKMP (0:1): received packet from 10.1.2.1 (R) MM_SA_SETUP
*Mar  1 00:03:56.899: ISAKMP (0:1): phase 1 packet is a duplicate of a previous packet.
*Mar  1 00:03:56.899: ISAKMP (0:1): retransmitting due to retransmit phase 1
*Mar  1 00:03:56.903: ISAKMP (0:1): retransmitting phase 1 MM_SA_SETUP...
*Mar  1 00:03:57.403: ISAKMP (0:1): retransmitting phase 1 MM_SA_SETUP...
*Mar  1 00:03:57.403: ISAKMP (0:1): incrementing error counter on sa: 
retransmit phase 1
*Mar  1 00:03:57.407: ISAKMP (0:1): retransmitting phase 1 MM_SA_SETUP
*Mar  1 00:03:57.407: ISAKMP (0:1): sending packet to 10.1.2.1 (R) 
 MM_SA_SETUP
*Mar  1 00:03:58.923: ISAKMP (0:1): received packet from 10.1.2.1 
 (R) MM_SA_SET UP
*Mar  1 00:03:58.931: ISAKMP (0:1): processing KE payload. message ID = 0
*Mar  1 00:04:00.775: ISAKMP (0:1): processing NONCE payload. message ID = 0
*Mar  1 00:04:00.783: ISAKMP (0:1): found peer pre-shared key matching 10.1.2.1
*Mar  1 00:04:00.795: ISAKMP (0:1): SKEYID state generated
*Mar  1 00:04:00.799: ISAKMP (0:1): processing vendor id payload
*Mar  1 00:04:00.803: ISAKMP (0:1): speaking to another IOS box!
*Mar  1 00:04:00.811: ISAKMP (0:1): sending packet to 10.1.2.1 (R) MM_KEY_EXCH
*Mar  1 00:04:02.751: ISAKMP (0:1): received packet from 10.1.2.1 (R) MM_KEY_EXCH
*Mar  1 00:04:02.759: ISAKMP (0:1): processing ID payload. message ID = 0
*Mar  1 00:04:02.759: ISAKMP (0:1): processing HASH payload. message ID = 0
*Mar  1 00:04:02.767: ISAKMP (0:1): SA has been authenticated with 10.1.2.1
*Mar  1 00:04:02.771: ISAKMP (1): ID payload
        next-payload : 8
        type         : 1
        protocol     : 17
        port         : 500
        length       : 8
*Mar  1 00:04:02.775: ISAKMP (1): Total payload length: 12
*Mar  1 00:04:02.783: ISAKMP (0:1): sending packet to 10.1.2.1 (R) QM_IDLE

*Mar  1 00:04:02.871: ISAKMP (0:1): received packet from 10.1.2.1 
 (R) QM_IDLE

!--- IKE phase 1 SA has been sucessfully negotiated !--- between Spoke 1 and Hub.

*Mar  1 00:04:02.891: ISAKMP (0:1): processing HASH payload. message ID = 581713929
*Mar  1 00:04:02.891: ISAKMP (0:1): processing SA payload. message ID = 581713929
*Mar  1 00:04:02.895: ISAKMP (0:1): Checking IPSec proposal 1

!--- IKE exchanges IPsec phase 2 parameters !--- between Spoke 1 and Hub.

*Mar  1 00:04:02.895: ISAKMP: transform 1, ESP_DES
*Mar  1 00:04:02.899: ISAKMP:   attributes in transform:
*Mar  1 00:04:02.899: ISAKMP:      encaps is 1
*Mar  1 00:04:02.899: ISAKMP:      SA life type in seconds
*Mar  1 00:04:02.903: ISAKMP:      SA life duration (basic) of 3600
*Mar  1 00:04:02.903: ISAKMP:      SA life type in kilobytes
*Mar  1 00:04:02.907: ISAKMP:      SA life duration (VPI) of  0x0 0x46 0x50 0x0
*Mar  1 00:04:02.911: ISAKMP:      authenticator is HMAC-MD5
*Mar  1 00:04:02.915: ISAKMP (0:1): atts are acceptable.

!--- IPsec phase 2 parameters have been !--- successfully exchanged between Spoke 1 and Hub.

*Mar  1 00:04:02.915: IPSEC(validate_proposal_request): proposal part #1,
  (key eng. msg.) INBOUND local= 10.1.4.1, remote= 10.1.2.1,
    local_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    remote_proxy= 172.16.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac ,
    lifedur= 0s and 0kb,
    spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x4
*Mar  1 00:04:02.931: ISAKMP (0:1): processing NONCE payload. message ID = 581713929
*Mar  1 00:04:02.935: ISAKMP (0:1): processing ID payload. message ID = 581713929
*Mar  1 00:04:02.935: ISAKMP (0:1): processing ID payload. message ID = 581713929
*Mar  1 00:04:02.939: ISAKMP (0:1): asking for 1 spis from ipsec
*Mar  1 00:04:02.943: IPSEC(key_engine): got a queue event...
*Mar  1 00:04:02.951: IPSEC(spi_response): getting spi 4208568169 for SA
        from 10.1.4.1       to 10.1.2.1       for prot 3
*Mar  1 00:04:02.955: ISAKMP: received ke message (2/1)
*Mar  1 00:04:03.207: ISAKMP (0:1): sending packet to 10.1.2.1 (R) QM_IDLE

*Mar  1 00:04:03.351: ISAKMP (0:1): received packet from 10.1.2.1 (R) QM_IDLE

*Mar  1 00:04:03.387: ISAKMP (0:1): Creating IPSec SAs
*Mar  1 00:04:03.387:         inbound SA from 10.1.2.1 to 10.1.4.1
        (proxy 172.16.1.0 to 192.168.1.0)
*Mar  1 00:04:03.391:         has spi 0xFAD9A769 and conn_id 2000 and flags 4
*Mar  1 00:04:03.395:         lifetime of 3600 seconds
*Mar  1 00:04:03.395:         lifetime of 4608000 kilobytes
*Mar  1 00:04:03.399:         outbound SA from 10.1.4.1       to 10.1.2.1
  (proxy 192.168.1.0     to 172.16.1.0     )
*Mar  1 00:04:03.403:         has spi -732960388 and conn_id 2001 and flags C
*Mar  1 00:04:03.407:         lifetime of 3600 seconds
*Mar  1 00:04:03.407:         lifetime of 4608000 kilobytes
*Mar  1 00:04:03.411: ISAKMP (0:1): deleting node 581713929 error FALSE reason "
quick mode done (await()"
*Mar  1 00:04:03.415: IPSEC(key_engine): got a queue event...
*Mar  1 00:04:03.415: IPSEC(initialize_sas): ,
  (key eng. msg.) INBOUND local= 10.1.4.1, remote= 10.1.2.1,
    local_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    remote_proxy= 172.16.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac ,
    lifedur= 3600s and 4608000kb,
    spi= 0xFAD9A769(4208568169), conn_id= 2000, keysize= 0, flags= 0x4
*Mar  1 00:04:03.427: IPSEC(initialize_sas): ,
  (key eng. msg.) OUTBOUND local= 10.1.4.1, remote= 10.1.2.1,
    local_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    remote_proxy= 172.16.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac ,
    lifedur= 3600s and 4608000kb,
    spi= 0xD44FE97C(3562006908), conn_id= 2001, keysize= 0, flags= 0xC
*Mar  1 00:04:03.443: IPSEC(create_sa): sa created,
  (sa) sa_dest= 10.1.4.1, sa_prot= 50,
    sa_spi= 0xFAD9A769(4208568169),
    sa_trans= esp-des esp-md5-hmac , sa_conn_id= 2000
*Mar  1 00:04:03.447: IPSEC(create_sa): sa created,
  (sa) sa_dest= 10.1.2.1, sa_prot= 50,
    sa_spi= 0xD44FE97C(3562006908),
    sa_trans= esp-des esp-md5-hmac , sa_conn_id= 2001

!--- IPsec tunnel has been created between !--- routers Spoke 1 and Hub.

*Mar  1 00:05:02.387: IPSEC(sa_request): ,

!--- Since an IPsec tunnel is created between Spoke 1 !--- and Spoke 2 through the Hub, the Hub router !--- initializes a new IPsec tunnel between itself and Spoke 2.

  (key eng. msg.) OUTBOUND local= 10.1.4.1, remote= 10.1.3.1,
    local_proxy= 172.16.1.0/255.255.255.0/0/0 (type=4),
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac ,
    lifedur= 3600s and 4608000kb,
    spi= 0x1B7A414E(460996942), conn_id= 0, keysize= 0, flags= 0x400C
*Mar  1 00:05:02.399: ISAKMP: received ke message (1/1)
*Mar  1 00:05:02.403: ISAKMP: local port 500, remote port 500
*Mar  1 00:05:02.411: ISAKMP (0:2): beginning Main Mode exchange
*Mar  1 00:05:02.415: ISAKMP (0:2): sending packet to 10.1.3.1 
 (I) MM_NO_STATE
*Mar  1 00:05:12.419: ISAKMP (0:2): retransmitting phase 1 MM_NO_STATE...
*Mar  1 00:05:12.419: ISAKMP (0:2): incrementing error counter 
 on sa: retransmit phase 1
*Mar  1 00:05:12.423: ISAKMP (0:2): retransmitting phase 1 MM_NO_STATE
*Mar  1 00:05:12.423: ISAKMP (0:2): sending packet to 10.1.3.1 (I) 
 MM_NO_STATE
*Mar  1 00:05:22.427: ISAKMP (0:2): retransmitting phase 1 MM_NO_STATE...
*Mar  1 00:05:22.427: ISAKMP (0:2): incrementing error counter on sa: 
 retransmit phase 1
*Mar  1 00:05:22.431: ISAKMP (0:2): retransmitting phase 1 MM_NO_STATE
*Mar  1 00:05:22.431: ISAKMP (0:2): sending packet to 10.1.3.1 (I) 
 MM_NO_STATE
*Mar  1 00:05:22.967: ISAKMP (0:2): received packet from 10.1.3.1 
 (I) MM_NO_STATE
*Mar  1 00:05:22.975: ISAKMP (0:2): processing SA payload. message ID = 0
*Mar  1 00:05:22.975: ISAKMP (0:2): found peer pre-shared key 
 matching 10.1.3.1
*Mar  1 00:05:22.979: ISAKMP (0:2): Checking ISAKMP transform 1 
 against priority 10 policy
*Mar  1 00:05:22.979: ISAKMP:      encryption DES-CBC
*Mar  1 00:05:22.983: ISAKMP:      hash MD5
*Mar  1 00:05:22.983: ISAKMP:      default group 1
*Mar  1 00:05:22.987: ISAKMP:      auth pre-share
*Mar  1 00:05:22.987: ISAKMP:      life type in seconds
*Mar  1 00:05:22.987: ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80
*Mar  1 00:05:22.991: ISAKMP (0:2): atts are acceptable. 
 Next payload is 0

!--- IKE phase 1 parameters have been successfully !--- exchanged between Hub and Spoke 2.

*Mar  1 00:05:24.447: ISAKMP (0:2): SA is doing pre-shared key 
 authentication using id type ID_IPV4_ADDR
*Mar  1 00:05:24.455: ISAKMP (0:2): sending packet to 10.1.3.1 
 (I) MM_SA_SETUP
*Mar  1 00:05:26.463: ISAKMP (0:2): received packet from 10.1.3.1 
 (I) MM_SA_SETUP
*Mar  1 00:05:26.471: ISAKMP (0:2): processing KE payload. message ID = 0
*Mar  1 00:05:28.303: ISAKMP (0:2): processing NONCE payload. message ID = 0
*Mar  1 00:05:28.307: ISAKMP (0:2): found peer pre-shared key matching 10.1.3.1
*Mar  1 00:05:28.319: ISAKMP (0:2): SKEYID state generated
*Mar  1 00:05:28.323: ISAKMP (0:2): processing vendor id payload
*Mar  1 00:05:28.327: ISAKMP (0:2): speaking to another IOS box!
*Mar  1 00:05:28.331: ISAKMP (2): ID payload
        next-payload : 8
        type         : 1
        protocol     : 17
        port         : 500
        length       : 8
*Mar  1 00:05:28.335: ISAKMP (2): Total payload length: 12
*Mar  1 00:05:28.343: ISAKMP (0:2): sending packet to 10.1.3.1 (I) 
 MM_KEY_EXCH
*Mar  1 00:05:28.399: ISAKMP (0:2): received packet from 10.1.3.1 (I) 
 MM_KEY_EXCH
*Mar  1 00:05:28.407: ISAKMP (0:2): processing ID payload. message ID = 0
*Mar  1 00:05:28.411: ISAKMP (0:2): processing HASH payload. message ID = 0
*Mar  1 00:05:28.419: ISAKMP (0:2): SA has been authenticated with 10.1.3.1
*Mar  1 00:05:28.419: ISAKMP (0:2): beginning Quick Mode exchange, 
 M-ID of -1872859789
*Mar  1 00:05:28.439: ISAKMP (0:2): sending packet to 10.1.3.1 (I) QM_IDLE

*Mar  1 00:05:28.799: ISAKMP (0:2): received packet from 10.1.3.1 
(I) QM_IDLE

!--- The IKE phase 1 SA has been successfully !--- negotiated between Hub and Spoke 2.

*Mar  1 00:05:28.815: ISAKMP (0:2): processing HASH payload. 
 message ID = -1872859789
*Mar  1 00:05:28.815: ISAKMP (0:2): processing SA payload. 
 message ID = -1872859789
*Mar  1 00:05:28.819: ISAKMP (0:2): Checking IPSec proposal 1

!--- IKE exchanges IPsec phase 2 parameters !--- between Hub and Spoke 2.

*Mar  1 00:05:28.819: ISAKMP: transform 1, ESP_DES
*Mar  1 00:05:28.823: ISAKMP:   attributes in transform:
*Mar  1 00:05:28.823: ISAKMP:      encaps is 1
*Mar  1 00:05:28.827: ISAKMP:      SA life type in seconds
*Mar  1 00:05:28.827: ISAKMP:      SA life duration (basic) of 3600
*Mar  1 00:05:28.827: ISAKMP:      SA life type in kilobytes
*Mar  1 00:05:28.831: ISAKMP:      SA life duration (VPI) of  0x0 0x46 0x50 0x0
*Mar  1 00:05:28.835: ISAKMP:      authenticator is HMAC-MD5
*Mar  1 00:05:28.839: ISAKMP (0:2): atts are acceptable.

!--- IPsec phase 2 parameters have been successfully !--- exchanged between Hub and Spoke 2.

*Mar  1 00:05:28.843: IPSEC(validate_proposal_request): proposal part #1,
  (key eng. msg.) INBOUND local= 10.1.4.1, remote= 10.1.3.1,
    local_proxy= 172.16.1.0/255.255.255.0/0/0 (type=4),
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac ,
    lifedur= 0s and 0kb,
    spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x4
*Mar  1 00:05:28.855: ISAKMP (0:2): processing NONCE payload. 
 message ID = -1872859789
*Mar  1 00:05:28.859: ISAKMP (0:2): processing ID payload. 
 message ID = -1872859789
*Mar  1 00:05:28.863: ISAKMP (0:2): processing ID payload. 
 message ID = -1872859789
*Mar  1 00:05:28.891: ISAKMP (0:2): Creating IPSec SAs
*Mar  1 00:05:28.891:         inbound SA from 10.1.3.1 to 10.1.4.1
        (proxy 192.168.1.0 to 172.16.1.0)
*Mar  1 00:05:28.895:         has spi 0x1B7A414E and conn_id 2002 and flags 4
*Mar  1 00:05:28.899:         lifetime of 3600 seconds
*Mar  1 00:05:28.899:         lifetime of 4608000 kilobytes
*Mar  1 00:05:28.903:         outbound SA from 10.1.4.1       to 10.1.3.1
  (proxy 172.16.1.0      to 192.168.1.0    )
*Mar  1 00:05:28.907:         has spi -385025107 and conn_id 2003 and flags C
*Mar  1 00:05:28.911:         lifetime of 3600 seconds
*Mar  1 00:05:28.911:         lifetime of 4608000 kilobytes
*Mar  1 00:05:28.915: ISAKMP (0:2): sending packet to 10.1.3.1 (I) QM_IDLE

*Mar  1 00:05:28.919: ISAKMP (0:2): deleting node -1872859789 error FALSE reason
 ""
*Mar  1 00:05:28.923: IPSEC(key_engine): got a queue event...
*Mar  1 00:05:28.927: IPSEC(initialize_sas): ,
  (key eng. msg.) INBOUND local= 10.1.4.1, remote= 10.1.3.1,
    local_proxy= 172.16.1.0/255.255.255.0/0/0 (type=4),
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac ,
    lifedur= 3600s and 4608000kb,
    spi= 0x1B7A414E(460996942), conn_id= 2002, keysize= 0, flags= 0x4
*Mar  1 00:05:28.939: IPSEC(initialize_sas): ,
  (key eng. msg.) OUTBOUND local= 10.1.4.1, remote= 10.1.3.1,
    local_proxy= 172.16.1.0/255.255.255.0/0/0 (type=4),
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac ,
    lifedur= 3600s and 4608000kb,
    spi= 0xE90CFBAD(3909942189), conn_id= 2003, keysize= 0, flags= 0xC
*Mar  1 00:05:28.951: IPSEC(create_sa): sa created,
  (sa) sa_dest= 10.1.4.1, sa_prot= 50,
    sa_spi= 0x1B7A414E(460996942),
    sa_trans= esp-des esp-md5-hmac , sa_conn_id= 2002
*Mar  1 00:05:28.959: IPSEC(create_sa): sa created,
  (sa) sa_dest= 10.1.3.1, sa_prot= 50,
    sa_spi= 0xE90CFBAD(3909942189),
    sa_trans= esp-des esp-md5-hmac , sa_conn_id= 2003

!--- IPsec tunnel has been created between routers !--- Hub and Spoke 2. This establishes a tunnel between Spoke 1 !--- and Spoke 2 through Hub.

Esta es la salida del router Spoke 1 de los comandos debug crypto isakmp y debug crypto ipsec. 

*Mar  1 00:03:28.771: IPSEC(sa_request): ,
  (key eng. msg.) OUTBOUND local= 10.1.2.1, remote= 10.1.4.1,
    local_proxy= 172.16.1.0/255.255.255.0/0/0 (type=4),
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac ,
    lifedur= 3600s and 4608000kb,
    spi= 0xD44FE97C(3562006908), conn_id= 0, keysize= 0, flags= 0x400C

!--- Request sent after the ping.

*Mar  1 00:03:28.787: ISAKMP: received ke message (1/1)
*Mar  1 00:03:28.791: ISAKMP: local port 500, remote port 500
*Mar  1 00:03:28.799: ISAKMP (0:1): beginning Main Mode exchange

!--- Initial IKE phase 1 parameters are exchanged !--- between Spoke 1 and Hub.

*Mar  1 00:03:28.803: ISAKMP (0:1): sending packet to 10.1.4.1 
 (I) MM_NO_STATE.
*Mar  1 00:03:38.807: ISAKMP (0:1): retransmitting phase 1 MM_NO_STATE...
*Mar  1 00:03:38.807: ISAKMP (0:1): incrementing error counter 
 on sa: retransmit phase 1
*Mar  1 00:03:38.811: ISAKMP (0:1): retransmitting phase 1 MM_NO_STATE
*Mar  1 00:03:38.811: ISAKMP (0:1): sending packet to 10.1.4.1 
 (I) MM_NO_STATE
*Mar  1 00:03:48.815: ISAKMP (0:1): retransmitting phase 1 MM_NO_STATE...
*Mar  1 00:03:48.815: ISAKMP (0:1): incrementing error counter on 
 sa: retransmit phase 1
*Mar  1 00:03:48.819: ISAKMP (0:1): retransmitting phase 1 MM_NO_STATE
*Mar  1 00:03:48.819: ISAKMP (0:1): sending packet to 10.1.4.1 (I) MM_NO_STATE
*Mar  1 00:03:49.355: ISAKMP (0:1): received packet from 10.1.4.1 
 (I) MM_NO_STATE
*Mar  1 00:03:49.363: ISAKMP (0:1): processing SA payload. message ID = 0
*Mar  1 00:03:49.363: ISAKMP (0:1): found peer pre-shared key matching 
 10.1.4.1
*Mar  1 00:03:49.367: ISAKMP (0:1): Checking ISAKMP transform 1 against 
 priority 10 policy
*Mar  1 00:03:49.367: ISAKMP:      encryption DES-CBC
*Mar  1 00:03:49.371: ISAKMP:      hash MD5
*Mar  1 00:03:49.371: ISAKMP:      default group 1
*Mar  1 00:03:49.375: ISAKMP:      auth pre-share
*Mar  1 00:03:49.375: ISAKMP:      life type in seconds
*Mar  1 00:03:49.375: ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80
*Mar  1 00:03:49.379: ISAKMP (0:1): atts are acceptable. 
 Next payload is 0

!--- IKE phase 1 parameters have been sucessfully !--- negotiated between Spoke 1 and Hub.

*Mar  1 00:03:50.835: ISAKMP (0:1): SA is doing pre-shared key 
 authentication using id type ID_IPV4_ADDR
*Mar  1 00:03:50.851: ISAKMP (0:1): sending packet to 10.1.4.1 
 (I) MM_SA_SETUP
*Mar  1 00:03:52.759: ISAKMP (0:1): received packet from 10.1.4.1 
 (I) MM_SA_SETUP
*Mar  1 00:03:52.763: ISAKMP (0:1): processing KE payload. message ID = 0
*Mar  1 00:03:54.635: ISAKMP (0:1): processing NONCE payload. message ID = 0
*Mar  1 00:03:54.639: ISAKMP (0:1): found peer pre-shared key matching 10.1.4.1
*Mar  1 00:03:54.651: ISAKMP (0:1): SKEYID state generated
*Mar  1 00:03:54.655: ISAKMP (0:1): processing vendor id payload
*Mar  1 00:03:54.663: ISAKMP (0:1): speaking to another IOS box!
*Mar  1 00:03:54.663: ISAKMP (1): ID payload
        next-payload : 8
        type         : 1
        protocol     : 17
        port         : 500
        length       : 8
*Mar  1 00:03:54.667: ISAKMP (1): Total payload length: 12
*Mar  1 00:03:54.675: ISAKMP (0:1): sending packet to 10.1.4.1 
 (I) MM_KEY_EXCH
*Mar  1 00:03:54.759: ISAKMP (0:1): received packet from 10.1.4.1 
 (I) MM_KEY_EXCH
*Mar  1 00:03:54.767: ISAKMP (0:1): processing ID payload. message ID = 0
*Mar  1 00:03:54.767: ISAKMP (0:1): processing HASH payload. message ID = 0
*Mar  1 00:03:54.775: ISAKMP (0:1): SA has been authenticated with 
 10.1.4.1
*Mar  1 00:03:54.779: ISAKMP (0:1): beginning Quick Mode exchange, 
 M-ID of 581713929
*Mar  1 00:03:54.799: ISAKMP (0:1): sending packet to 10.1.4.1 (I) QM_IDLE

*Mar  1 00:03:55.155: ISAKMP (0:1): received packet from 10.1.4.1 (I) QM_IDLE

*Mar  1 00:03:55.171: ISAKMP (0:1): processing HASH payload. 
 message ID = 581713929
*Mar  1 00:03:55.175: ISAKMP (0:1): processing SA payload. 
 message ID = 581713929
*Mar  1 00:03:55.179: ISAKMP (0:1): Checking IPSec proposal 1

!--- IKE exchanges the IPsec phase 2 parameters between !--- Spoke 1 and Hub.

*Mar  1 00:03:55.179: ISAKMP: transform 1, ESP_DES
*Mar  1 00:03:55.183: ISAKMP:   attributes in transform:
*Mar  1 00:03:55.183: ISAKMP:      encaps is 1
*Mar  1 00:03:55.183: ISAKMP:      SA life type in seconds
*Mar  1 00:03:55.187: ISAKMP:      SA life duration (basic) of 3600
*Mar  1 00:03:55.187: ISAKMP:      SA life type in kilobytes
*Mar  1 00:03:55.191: ISAKMP:      SA life duration (VPI) of  0x0 0x46 0x50 0x0
*Mar  1 00:03:55.195: ISAKMP:      authenticator is HMAC-MD5
*Mar  1 00:03:55.199: ISAKMP (0:1): atts are acceptable.

!--- IKE has successfully negotiated phase 2 IPsec !--- SA between Hub and Spoke 2.

*Mar  1 00:03:55.203: IPSEC(validate_proposal_request): proposal part #1,
  (key eng. msg.) INBOUND local= 10.1.2.1, remote= 10.1.4.1,
    local_proxy= 172.16.1.0/255.255.255.0/0/0 (type=4),
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac ,
    lifedur= 0s and 0kb,
    spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x4
*Mar  1 00:03:55.219: ISAKMP (0:1): processing NONCE payload. 
 message ID = 581713929
*Mar  1 00:03:55.219: ISAKMP (0:1): processing ID payload. 
 message ID = 581713929
*Mar  1 00:03:55.223: ISAKMP (0:1): processing ID payload. 
 message ID = 581713929
*Mar  1 00:03:55.251: ISAKMP (0:1): Creating IPSec SAs
*Mar  1 00:03:55.255:         inbound SA from 10.1.4.1 to 10.1.2.1
        (proxy 192.168.1.0 to 172.16.1.0)
*Mar  1 00:03:55.259:         has spi 0xD44FE97C and conn_id 2000 and flags 4
*Mar  1 00:03:55.263:         lifetime of 3600 seconds
*Mar  1 00:03:55.263:         lifetime of 4608000 kilobytes
*Mar  1 00:03:55.267:         outbound SA from 10.1.2.1       to 10.1.4.1
  (proxy 172.16.1.0      to 192.168.1.0    )
*Mar  1 00:03:55.271:         has spi -86399127 and conn_id 2001 and flags C
*Mar  1 00:03:55.271:         lifetime of 3600 seconds
*Mar  1 00:03:55.275:         lifetime of 4608000 kilobytes
*Mar  1 00:03:55.279: ISAKMP (0:1): sending packet to 10.1.4.1 (I) QM_IDLE

*Mar  1 00:03:55.283: ISAKMP (0:1): deleting node 581713929 error FALSE reason "
"
*Mar  1 00:03:55.287: IPSEC(key_engine): got a queue event...
*Mar  1 00:03:55.291: IPSEC(initialize_sas): ,
  (key eng. msg.) INBOUND local= 10.1.2.1, remote= 10.1.4.1,
    local_proxy= 172.16.1.0/255.255.255.0/0/0 (type=4),
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac ,
    lifedur= 3600s and 4608000kb,
    spi= 0xD44FE97C(3562006908), conn_id= 2000, keysize= 0, flags= 0x4
*Mar  1 00:03:55.303: IPSEC(initialize_sas): ,
  (key eng. msg.) OUTBOUND local= 10.1.2.1, remote= 10.1.4.1,
    local_proxy= 172.16.1.0/255.255.255.0/0/0 (type=4),
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac ,
    lifedur= 3600s and 4608000kb,
    spi= 0xFAD9A769(4208568169), conn_id= 2001, keysize= 0, flags= 0xC
*Mar  1 00:03:55.319: IPSEC(create_sa): sa created,
  (sa) sa_dest= 10.1.2.1, sa_prot= 50,
    sa_spi= 0xD44FE97C(3562006908),
    sa_trans= esp-des esp-md5-hmac , sa_conn_id= 2000
*Mar  1 00:03:55.323: IPSEC(create_sa): sa created,
  (sa) sa_dest= 10.1.4.1, sa_prot= 50,
    sa_spi= 0xFAD9A769(4208568169),
    sa_trans= esp-des esp-md5-hmac , sa_conn_id= 2001

!--- The IPsec tunnel between Spoke 1 and Hub is set up.

Información Relacionada

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