03-09-2005 09:48 PM - edited 03-02-2019 10:05 PM
i am having this problem on a cisco 837 adsl router. the dialer1 gets disconected after few minutes. when i went to diagnose the problem i found that when i remove the IP NAT INSIDE command on eth0 the dialer1 doesnt disconnect , as soon as i put IP NAT INSIDE on eth0 the router gets disconneted , i am attacthing the scripts plz see the followingversion 12.3
no service pad
service timestamps debug datetime msec
service timestamps log uptime
service password-encryption
!
hostname cops_router
!
enable password xxx
!
username cops password xxx
no aaa new-model
ip subnet-zero
!
!
ip audit notify log
ip audit po max-events 100
no ftp-server write-enable
!
!
!
!
!
!
!
interface Ethernet0
ip address 10.0.0.138 255.0.0.0
ip nat inside
hold-queue 100 out
!
interface ATM0
no ip address
no ip mroute-cache
no atm ilmi-keepalive
pvc 8/35
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
dsl operating-mode auto
!
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
dialer pool 1
keepalive 180
ppp authentication pap callin
ppp pap sent-username xxx password xxx
!
ip nat inside source list 1 interface Dialer1 overload
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
ip http server
no ip http secure-server
!
access-list 1 permit 10.0.0.0 0.255.255.255
dialer-list 1 protocol ip permit
!
line con 0
exec-timeout 120 0
no modem enable
stopbits 1
line aux 0
line vty 0 4
access-class 23 in
exec-timeout 120 0
password xxx
login local
!
scheduler max-task-time 5000
!
end
03-09-2005 10:30 PM
Hello,
there is no ´dialer-group 1´ statement on your Dialer 1 interface, not sure if that is just a typo. Also, try and remove the ´keepalive 180´ statement from your Dialer 1 interface and see if that makes a difference...
Regards,
GP
03-10-2005 01:36 AM
hi we have checked it still same problem
our problem is related to natting if we remove
IP NAT INSIDE it works , if we put IP NAT INSIDE it disconnects
thanks
03-10-2005 02:23 AM
Hello,
can you turn on debugging for NAT and post the results ?
debug ip nat
Regards,
GP
03-10-2005 04:27 AM
Hi Savio,
From dialer 0, remove:
ppp authentication pap callin
In global remove:
dialer-list 1 protocol ip permit
They are not required - I reckon it's the dialer-list statement confusing the nat as it's using the same ACL
Try that then, to be sure it's not authentication, deb ppp negotiation, shut the ATM interface and no shut in order to collect the debug info.
Also, I can't remember which version it was, but a couple of IOS version had a problem with eihter ip mroute-cache or route-cache. Disable both on the dialer int.
HTH
Ali
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