What an amazing resource... thank you all... I'm fairly new to all this, however I can get around ok.... I'm sure this is really simple but I've searched alot for the answer and I can't get anything that works...\r\n\r\nWhat we're trying to do here is keep routing our our private IPs for our office workstations, adding the routing of public IPs for our servers. We've currently got FastEthernet0 bound to 192.168.1.155. We'd like to add 126.96.36.199 as a secondary IP to that interface and whatever else would be needed to route the our servers with public 11.22.117.xxx ips.\r\n\r\nAlso, I want to add... If I try:\r\n\r\nip address 188.8.131.52 255.255.255.192 secondary\r\n\r\nI get:\r\n\r\n% 184.108.40.206 is assigned to Serial0.2\r\n\r\nThanks in advance for your help....\r\n\r\nAjar\r\n\r\nCurrent configuration : 1876 bytes\r\n!\r\nversion 12.3\r\nservice nagle\r\nservice timestamps debug datetime msec\r\nservice timestamps log datetime msec\r\nservice password-encryption\r\n!\r\nhostname Router\r\n!\r\nboot-start-marker\r\nboot-end-marker\r\n!\r\nenable secret 5 $xxxxxxxxxxxxxxxxxxxxxxxx\r\n!\r\nno aaa new-model\r\nip subnet-zero\r\nno ip source-route\r\n!\r\n!\r\nip dhcp excluded-address 220.127.116.11\r\n!\r\n!\r\nip cef\r\nno ip domain lookup\r\n!\r\n!\r\n!\r\n!\r\ninterface FastEthernet0\r\n ip address 192.168.1.155 255.255.255.0\r\n ip nat inside\r\n ip virtual-reassembly\r\n speed auto\r\n no keepalive\r\n!\r\ninterface Serial0\r\n no ip address\r\n ip nat outside\r\n ip virtual-reassembly\r\n encapsulation frame-relay IETF\r\n service-module t1 timeslots 1-24\r\n service-module t1 fdl both\r\n frame-relay lmi-type ansi\r\n!\r\ninterface Serial0.1 point-to-point\r\n ip nat outside\r\n ip virtual-reassembly\r\n frame-relay interface-dlci 16 ppp Virtual-Template1\r\n!\r\ninterface Serial0.2 point-to-point\r\n ip address 18.104.22.168 255.255.255.192\r\n no cdp enable\r\n!\r\ninterface Virtual-Template1\r\n ip address negotiated\r\n ip nat outside\r\n ip virtual-reassembly\r\n ppp chap hostname 5085577@bz8\r\n ppp chap password xxxxxxxxxxxxxxxxxxxxxx\r\n ppp ipcp dns request\r\n ppp ipcp route default\r\n ppp ipcp address accept\r\n!\r\nip classless\r\nno ip http server\r\n!\r\nip nat pool LegalPool 22.214.171.124 126.96.36.199 netmask 255.255.255.192\r\nip nat inside source list 20 pool LegalPool overload\r\n!\r\naccess-list 20 permit 192.168.1.0 0.0.0.255\r\n!\r\ncontrol-plane\r\n!