hostname ASA1
!
interface Gig 0/0
 nameif INSIDE
 security-level 100
 ip address 192.168.1.254 255.255.255.0
 no shut 
!             
interface Gig 0/1
 nameif OUTSIDE
 security-level 0
 ip address 10.10.10.1 255.255.255.0
 no shut 
!
access-list LAN1_LAN2 extended permit ip 192.168.1.0 255.255.255.0 192.168.2.0 255.255.255.0 
!
route OUTSIDE 192.168.2.0 255.255.255.0 10.10.10.2 1
!
crypto ipsec ikev1 transform-set MY_TRANSFORM_SET esp-aes-256 esp-sha-hmac 
!
crypto map MY_CRYPTO_MAP 10 match address LAN1_LAN2
crypto map MY_CRYPTO_MAP 10 set peer 10.10.10.2 
crypto map MY_CRYPTO_MAP 10 set ikev1 transform-set MY_TRANSFORM_SET
crypto map MY_CRYPTO_MAP 10 set security-association lifetime seconds 3600
crypto map MY_CRYPTO_MAP interface OUTSIDE
!
crypto isakmp identity address 
crypto ikev1 enable OUTSIDE
crypto ikev1 policy 10
 authentication pre-share
 encryption aes
 hash sha
 group 2
 lifetime 3600
!
tunnel-group 10.10.10.2 type ipsec-l2l
tunnel-group 10.10.10.2 ipsec-attributes
 ikev1 pre-shared-key test
!
end

==========================================================================================================
hostname R1
!
no ip routing
!
interface Gig 0/0
 ip address 192.168.1.1 255.255.255.0
 duplex auto
 speed auto
 no shut
!
ip default-gateway 192.168.1.254
!
end
=========================================================================
Troubleshooting:
=========================================================================
ASA1# show crypto ikev1 sa

IKEv1 SAs:

   Active SA: 1
    Rekey SA: 0 (A tunnel will report 1 Active and 1 Rekey SA during rekey)
Total IKE SA: 1

1   IKE Peer: 10.10.10.2
    Type    : L2L             Role    : initiator 
    Rekey   : no              State   : MM_ACTIVE 
ASA1# show crypto ipsec sa
interface: OUTSIDE
    Crypto map tag: MY_CRYPTO_MAP, seq num: 10, local addr: 10.10.10.1

      access-list LAN1_LAN2 extended permit ip 192.168.1.0 255.255.255.0 192.168.2.0 255.255.255.0 
      local ident (addr/mask/prot/port): (192.168.1.0/255.255.255.0/0/0)
      remote ident (addr/mask/prot/port): (192.168.2.0/255.255.255.0/0/0)
      current_peer: 10.10.10.2


      #pkts encaps: 4, #pkts encrypt: 4, #pkts digest: 4
      #pkts decaps: 0, #pkts decrypt: 0, #pkts verify: 0
      #pkts compressed: 0, #pkts decompressed: 0
      #pkts not compressed: 4, #pkts comp failed: 0, #pkts decomp failed: 0
      #pre-frag successes: 0, #pre-frag failures: 0, #fragments created: 0
      #PMTUs sent: 0, #PMTUs rcvd: 0, #decapsulated frgs needing reassembly: 0
      #TFC rcvd: 0, #TFC sent: 0
      #Valid ICMP Errors rcvd: 0, #Invalid ICMP Errors rcvd: 0
      #send errors: 0, #recv errors: 0

      local crypto endpt.: 10.10.10.1/0, remote crypto endpt.: 10.10.10.2/0
      path mtu 1500, ipsec overhead 74(44), media mtu 1500
      PMTU time remaining (sec): 0, DF policy: copy-df
      ICMP error validation: disabled, TFC packets: disabled
      current outbound spi: 111BAC69
      current inbound spi : 1A666793

    inbound esp sas:
      spi: 0x1A666793 (442918803)
         SA State: active
         transform: esp-aes-256 esp-sha-hmac no compression 
         in use settings ={L2L, Tunnel, IKEv1, }
         slot: 0, conn_id: 2, crypto-map: MY_CRYPTO_MAP
         sa timing: remaining key lifetime (kB/sec): (3915000/3572)
         IV size: 16 bytes
         replay detection support: Y
         Anti replay bitmap: 
          0x00000000 0x00000001
    outbound esp sas:
      spi: 0x111BAC69 (287026281)
         SA State: active
         transform: esp-aes-256 esp-sha-hmac no compression 
         in use settings ={L2L, Tunnel, IKEv1, }
         slot: 0, conn_id: 2, crypto-map: MY_CRYPTO_MAP
         sa timing: remaining key lifetime (kB/sec): (3914999/3572)
         IV size: 16 bytes
         replay detection support: Y
         Anti replay bitmap: 
          0x00000000 0x00000001

ASA1# 
============================================================================