Hi everybody,
I’m experiencing a NAT problem here with my dynamic DSL. Here is the issue. I’ve configured a Cisco 836 router in front of a pix to use the ISDN backup interface when the DSL is down. So far so good the backup interface works fine. But I can’t seem to find any solution for NAT to the ISDN interface. Here is the config of the router:
Code:
version 12.3
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname cisco
!
no logging buffered
enable secret ********************
!
username admin password ************
no aaa new-model
ip subnet-zero
no ip source-route
no ip domain lookup
!
!
ip audit notify log
ip audit po max-events 100
no ftp-server write-enable
isdn switch-type basic-net3
isdn voice-call-failure 0
!
!
!
!
!
!
!
interface Ethernet0
ip address 192.168.0.1 255.255.255.0
ip nat inside
no ip mroute-cache
no cdp enable
!
interface Virtual-Template1
no ip address
!
interface BRI0
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
no cdp enable
!
interface ATM0
no ip address
no ip mroute-cache
no atm ilmi-keepalive
pvc 8/35
encapsulation aal5mux ppp dialer
dialer pool-member 2
!
dsl operating-mode auto
hold-queue 224 in
!
interface FastEthernet1
no ip address
duplex auto
speed auto
!
interface FastEthernet2
no ip address
duplex auto
speed auto
!
interface FastEthernet3
no ip address
duplex auto
speed auto
!
interface FastEthernet4
no ip address
duplex auto
speed auto
!
interface Dialer1
ip address negotiated
ip nat outside
encapsulation ppp
shutdown
dialer pool 1
dialer idle-timeout 30
dialer string 8962545555
dialer watch-group 1
dialer-group 1
no cdp enable
ppp authentication pap chap callin
ppp chap hostname username
ppp chap password **************
ppp pap sent-username usename password ******************
!
interface Dialer2
ip address negotiated
ip mtu 1492
ip nat outside
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 2
dialer-group 2
no cdp enable
ppp authentication chap pap callin
ppp chap hostname
ppp chap password ******************
ppp pap sent-username password **************
!
ip nat inside source static 192.168.0.2 interface Dialer2
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer2
ip route 0.0.0.0 0.0.0.0 Dialer1 80
no ip http server
no ip http secure-server
!
access-list 1 permit 192.168.0.0 0.0.0.255
dialer-list 1 protocol ip permit
no cdp run
!
line con 0
exec-timeout 120 0
no modem enable
stopbits 1
line aux 0
line vty 0 4
access-class 1 in
exec-timeout 120 0
login local
length 0
!
scheduler max-task-time 5000
no rcapi server
!
!
!
end
I need the :
ip nat inside source static 192.168.0.2 interface Dialer2
Because this is the outside interface of my PIX which accepts some services. However, I can’t seem to find a way to NAT to interface Dialer1. (the backup)
Any ideas will be much appreciated.
George