Hub Router

2503#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 2503
!


!
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 200.1.2.1
crypto isakmp key cisco123 address 200.1.3.1

!--- 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 200.1.2.1

!--- 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

!--- Specifyies the traffic to be encrypted.

crypto map mymap 20 ipsec-isakmp
set peer 200.1.3.1
set transform-set myset
match address 120
!
!
!
!
interface Loopback0
ip address 10.1.1.1 255.255.255.0
!
interface Ethernet0
ip address 200.1.1.1 255.255.255.0
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 Ethernet0
ip route 192.168.1.0 255.255.255.0 Ethernet0
ip route 200.1.0.0 255.255.0.0 Ethernet0
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.




Spoke 1 Router

2509a#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 2509a
!
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 200.1.1.1
!
!
crypto ipsec transform-set myset esp-des esp-md5-hmac
!
crypto map mymap 10 ipsec-isakmp
set peer 200.1.1.1
set transform-set myset
match address 110
!
!
!
!
interface Loopback0
ip address 172.16.1.1 255.255.255.0
!
interface Ethernet0
ip address 200.1.2.1 255.255.255.0
no ip route-cache
no ip mroute-cache
crypto map mymap
!

.
.

!--- Output suppressed.

.
.
ip classless
ip route 10.1.1.0 255.255.255.0 Ethernet0
ip route 192.168.1.0 255.255.255.0 Ethernet0
ip route 200.1.0.0 255.255.0.0 Ethernet0
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#



Spoke 2 Router

VPN2509#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 VPN2509
!

!
ip subnet-zero
no ip domain-lookup
!

!
crypto isakmp policy 10
hash md5
authentication pre-share
crypto isakmp key cisco123 address 200.1.1.1
!
!
crypto ipsec transform-set myset esp-des esp-md5-hmac
!
crypto map mymap 10 ipsec-isakmp
set peer 200.1.1.1
set transform-set myset
match address 120
!
!
!
!
interface Loopback0
ip address 192.168.1.1 255.255.255.0
!
interface Ethernet0
ip address 200.1.3.1 255.255.255.0

!--- No ip route-cache.

no ip mroute-cache
crypto map mymap
!

.
.

!--- Output suppressed.

.
.
ip classless
ip route 10.1.1.0 255.255.255.0 Ethernet0
ip route 172.16.0.0 255.255.0.0 Ethernet0
ip route 200.1.0.0 255.255.0.0 Ethernet0
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#