LAN1和LAN2的默认路由指向各自的ASA,各ASA中设置对方LAN的静态路由指向ROUTER,打开ASA的intra-interface traffic,关闭LAN1和LAN2地址互相访问的NAT,这时LAN1和LAN2互相可以ping,但TCP连接失败,原因请看: http://www.cisco.com/c/en/us/td/docs/security/asa/asa82/configuration/guide/config/conns_tcpstatebypass.html
解决方法就是设置TCP state bypass,具体步骤也在上面。