Hi, when I only config the bri int , I can ping any ip in route. Now, I use the dialer 1 int, I can't ping any ip in route my config version 12.0 service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname 2600 ! ! ! ! ! ! ip subnet-zero no ip domain-lookup ! isdn switch-type basic-net3 isdn voice-call-failure 0 ! ! ! interface FastEthernet0/0 ip address 192.168.1.250 255.255.255.0 no ip directed-broadcast ip nat inside duplex auto speed auto ! interface BRI1/0 ip address negotiated no ip directed-broadcast ip nat outside encapsulation ppp dialer rotary-group 1 dialer-group 1 isdn switch-type basic-net3 ! interface BRI1/1 no ip address no ip directed-broadcast ip nat outside encapsulation ppp shutdown dialer rotary-group 1 isdn switch-type basic-net3 ! interface BRI1/2 no ip address no ip directed-broadcast shutdown isdn switch-type basic-net3 ! interface BRI1/3 no ip address no ip directed-broadcast shutdown isdn switch-type basic-net3 ! interface Dialer1 ip address negotiated no ip directed-broadcast ip nat outside encapsulation ppp dialer in-band dialer idle-timeout 1800 dialer string 169 dialer load-threshold 1 either dialer-group 1 ppp authentication pap callin ppp pap sent-username 169 password 7 055A5056 ppp multilink ! ip classless ip route 0.0.0.0 0.0.0.0 Dialer1 no ip http server ! dialer-list 1 protocol ip permit ! line con 0 transport input none line aux 0 line vty 0 4 login ! no scheduler allocate end when I ping somewhere in route , the message is Sending 5, 100-byte ICMP Echos to 166.111.8.28, timeout is 2 seconds: FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]