Router-A#sh run
!
hostname Router-A
!
crypto isakmp policy 10
 encr aes
 hash md5
 authentication pre-share
 group 2
!
crypto isakmp key cisco123 address 20.0.0.2
crypto isakmp key cisco123 address 40.0.0.2
!
!
!
crypto ipsec transform-set myset esp-aes esp-md5-hmac
!
crypto map crypto-map 10 ipsec-isakmp 
 set peer 20.0.0.2
 set transform-set myset 
 match address 100
!
crypto map crypto-map 20 ipsec-isakmp 
 set peer 40.0.0.2
 set transform-set myset 
 match address 100
!
interface FastEthernet0/0
 ip address 192.168.2.1 255.255.255.0
 duplex auto
 speed auto
!
interface FastEthernet0/1
 ip address 10.0.0.1 255.255.255.0
 duplex auto
 speed auto
 crypto map crypto-map
!
interface FastEthernet1/0
 ip address 30.0.0.1 255.255.255.0
 duplex auto
 speed auto
 crypto map crypto-map
!
ip route 0.0.0.0 0.0.0.0 10.0.0.2 
ip route 0.0.0.0 0.0.0.0 30.0.0.2 
!
access-list 100 permit ip 192.168.2.0 0.0.0.255 192.168.1.0 0.0.0.255
!
end
###############################

Router-B#sh run
!
hostname Router-B
!
crypto isakmp policy 10
 encr aes
 hash md5
 authentication pre-share
 group 2
!
crypto isakmp key cisco123 address 10.0.0.1
crypto isakmp key cisco123 address 30.0.0.1
!
crypto ipsec transform-set myset esp-aes esp-md5-hmac
!
crypto map crypto-map 10 ipsec-isakmp 
 set peer 10.0.0.1
 set transform-set myset 
 match address 100
!
crypto map crypto-map 20 ipsec-isakmp 
 set peer 30.0.0.1
 set transform-set myset 
 match address 100
!
interface FastEthernet0/0
 ip address 20.0.0.2 255.255.255.0
 duplex auto
 speed auto
 crypto map crypto-map
!
interface FastEthernet0/1
 ip address 40.0.0.2 255.255.255.0
 duplex auto
 speed auto
 crypto map crypto-map
!
interface Ethernet1/0
 ip address 192.168.1.1 255.255.255.0
 duplex auto
 speed auto
!
ip classless
ip route 0.0.0.0 0.0.0.0 20.0.0.1 
ip route 0.0.0.0 0.0.0.0 40.0.0.1 
!
access-list 100 permit ip 192.168.1.0 0.0.0.255 192.168.2.0 0.0.0.255
!
end
Router-B#