################################################# Host Core ################################################# crypto isakmp policy 20 authentication pre-share group 2 crypto isakmp key 12345 address 10.0.0.20 ! ! crypto ipsec transform-set myset esp-des esp-sha-hmac comp-lzs ! ! crypto map ToFrag 10 ipsec-isakmp set peer 10.0.0.20 set transform-set myset match address 102 ! access-list 102 permit ip host 10.0.0.10 host 10.0.0.20 ! interface F1/0 description connected to Frag ip address 10.0.0.10 255.255.255.0 crypto map ToFrag ! ################################################# Host Frag ################################################# crypto isakmp policy 20 authentication pre-share group 2 crypto isakmp key 12345 address 10.0.0.10 ! ! crypto ipsec transform-set myset esp-des esp-sha-hmac comp-lzs ! ! crypto map ToCore 10 ipsec-isakmp set peer 10.0.0.10 set transform-set myset match address 102 ! access-list 102 permit ip host 10.0.0.20 host 10.0.0.10 ! interface e0 description connected to Core ip address 10.0.0.20 255.255.255.0 crypto map ToCore !