I need to change my border router to a 1721 with one sdsl and one adsl interface this then connects to a pix 506e but the 1721 has been configured with public ip's on the wan's (each ip is from a different range) then they are nated on the fa to a private ip.
My problem - is that the pix 506e has a public ip and is configured to deal with various operations which need a public ip. So the fa int on the router needs to have a public ip and no nat.
someone has suggested virtual int on both pix and router ??
is this possible ?1721 config
sho run Building configuration...
Current configuration : 1765 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec service password-encryption ! hostname router ! boot-start-marker boot-end-marker ! enable secret 5 ! no aaa new-model mmi polling-interval 60 no mmi auto-configure no mmi pvc mmi snmp-timeout 180 ! ! ! ip cef ip name-server 126.96.36.199 ip name-server 188.8.131.52
controller DSL 1 mode atm line-term cpe line-mode 2-wire line-zero dsl-mode shdsl symmetric annex B line-rate auto
interface ATM0 no ip address no atm ilmi-keepalive dsl operating-mode auto pvc 0/38 encapsulation aal5mux ppp dialer dialer pool-member 1 interface ATM1 no ip address no atm ilmi-keepalive pvc 0/38 encapsulation aal5mux ppp dialer dialer pool-member 2
interface FastEthernet0 ip address 10.35.104.200 255.255.255.0 ip nat inside ip virtual-reassembly speed auto
interface Dialer0 ip address negotiated ip nat outside ip virtual-reassembly encapsulation ppp dialer pool 1 dialer-group 1 ppp authentication chap callin ppp chap hostname ****** ppp chap password 7 ******
interface Dialer1 ip address negotiated ip nat outside ip virtual-reassembly encapsulation ppp dialer pool 2 dialer-group 1 ppp authentication chap callin ppp chap hostname *********** ppp chap password 7 **********
ip route 0.0.0.0 0.0.0.0 Dialer0 ip route 0.0.0.0 0.0.0.0 Dialer1 no ip http server
access-list 1 permit 10.35.104.0 0.0.0.253 access-list 2 permit 10.35.104.0 0.0.0.253 dialer-list 1 protocol ip permit dialer-list 2 protocol ip permit ! control-plane
line con 0 line aux 0 line vty 0 4 access-class 2 in password 7 login ! end