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Cisco DSL Disconnect

Posted on 2007-11-28
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Last Modified: 2013-12-14
Helo,

I have a newly configured Cisco 1841 router that I am using to connect to the Internet.  The service is very bad and keeps dropping out - the ISP is trying to blame this on the router config, but I am not sure that I can find anything incorrect in the config.  Please can any experts look at the config and see of there is anything wrong?  I attach the config and some of the loggin messages below

ROUTER CONFIG

version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname router
!
boot-start-marker
boot-end-marker
!
logging buffered 51200 warnings
enable secret
!
no aaa new-model
ip cef
!
!
!
!
ip domain name domain.com
ip name-server nameserver1
ip name-server nameserver2
vpdn enable
!
!
!
!
!
interface FastEthernet0/0
 ip address LAN_1_ADDRESS
 ip nat inside
 duplex auto
 speed auto
 hold-queue 100 out
!
interface FastEthernet0/1
 ip address LAN_2_ADDRESS
 duplex auto
 speed auto
!
interface ATM0/0/0
 no ip address
 no atm ilmi-keepalive
 dsl operating-mode auto
 pvc 8/35
  encapsulation aal5snap
  pppoe-client dial-pool-number 1
 !
!
interface Dialer1
 ip address PUBLIC_IP_ADDRESS
 ip access-group 101 in
 ip nat outside
 encapsulation ppp
 dialer pool 1
 dialer remote-name redback
 dialer-group 1
 ppp authentication pap chap callin
 ppp chap hostname
 ppp chap password
!
ip route 0.0.0.0 0.0.0.0 Dialer1
!
no ip http server
ip http access-class 23
ip http authentication local
ip http timeout-policy idle 60 life 86400 requests 10000
ip nat inside source list 150 interface Dialer1 overload
ip nat inside source static tcp LAN_1_ADDRESS 1723 ROUTER_EXTERNAL_IP 1723 extendable
ip nat inside source static tcp SERVER_INTERNAL_ILO 80 SERVER_EXTERNAL_ILO 80 extendable
ip nat inside source static tcp SERVER_INTERNAL_ILO 443 SERVER_EXTERNAL_ILO 443 extendable
ip nat inside source static tcp SERVER_INTERNAL_IP 20 SERVER_EXTERNAL_IP 20 extendable
ip nat inside source static tcp SERVER_INTERNAL_IP 21 SERVER_EXTERNAL_IP 21 extendable
ip nat inside source static tcp SERVER_INTERNAL_IP 25 SERVER_EXTERNAL_IP 25 extendable
ip nat inside source static tcp SERVER_INTERNAL_IP 80 SERVER_EXTERNAL_IP 80 extendable
ip nat inside source static tcp SERVER_INTERNAL_IP 443 SERVER_EXTERNAL_IP 443 extendable
ip nat inside source static tcp SERVER_INTERNAL_IP 1723 SERVER_EXTERNAL_IP 1723 extendable
ip nat inside source static tcp SERVER_INTERNAL_IP 3389 SERVER_EXTERNAL_IP 3389 extendable
!
access-list 23 permit X.X.X.X Y.Y.Y.Y
access-list 101 permit udp any eq domain any
access-list 101 permit tcp any any established
access-list 101 permit tcp any host SERVER_EXTERNAL_IP eq ftp-data
access-list 101 permit tcp any host SERVER_EXTERNAL_IP eq ftp
access-list 101 permit tcp any host SERVER_EXTERNAL_IP eq 1723
access-list 101 permit tcp any host SERVER_EXTERNAL_IP eq smtp
access-list 101 permit tcp any host SERVER_EXTERNAL_IP eq www
access-list 101 permit tcp any host SERVER_EXTERNAL_IP eq 443
access-list 101 permit gre any host SERVER_EXTERNAL_IP
access-list 101 permit tcp any host ROUTER_EXTERNAL_IP eq 1723
access-list 101 permit gre any host ROUTER_EXTERNAL_IP
access-list 101 permit tcp any host SERVER_EXTERNAL_ILO eq www
access-list 101 permit tcp any host SERVER_EXTERNAL_ILO eq 443
access-list 150 permit ip host SERVER_INTERNAL_IP any
access-list 150 permit tcp INTERNAL_LAN 0.0.0.255 any eq 1723
access-list 150 permit gre INTERNAL_LAN 0.0.0.255 any
access-list 150 permit ip host SERVER_INTERNAL_ILO any
dialer-list 1 protocol ip permit
!
control-plane
!
banner login ^C-----------------------------------------------------------------------------------
This router is the property of My Company Ltd. No unathorized access allowed.
-----------------------------------------------------------------------------------^C
!
line con 0
 login local
line aux 0
line vty 0 4
 access-class 23 in
 privilege level 15
 login local
 transport input telnet
!
scheduler allocate 20000 1000
end

LOGGING MESSAGES

*Nov 28 08:16:58.286: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 08:16:59.714: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 08:17:21.962: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 08:22:20.534: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 08:22:54.986: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 08:23:06.758: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 08:23:29.094: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 08:23:29.810: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 08:23:52.090: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 08:28:20.726: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 08:28:47.046: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 08:28:49.546: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 08:29:11.834: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 08:34:11.222: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 08:34:37.486: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 08:40:00.246: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 08:40:35.350: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 08:45:58.998: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 08:46:25.414: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 08:51:47.638: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 08:52:08.214: %LINK-3-UPDOWN: Interface ATM0/0/0, changed state to down
*Nov 28 08:53:09.398: %LINK-3-UPDOWN: Interface ATM0/0/0, changed state to up
*Nov 28 08:53:19.546: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 08:57:58.006: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 08:58:20.082: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 08:58:33.470: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 08:58:56.022: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 08:58:57.834: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 08:59:23.082: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 09:03:47.734: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 09:04:22.482: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 09:09:46.710: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 09:10:13.270: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 09:15:37.014: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 09:16:12.230: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
*Nov 28 09:21:32.182: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down
*Nov 28 09:21:58.830: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
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Comment
Question by:micross
1 Comment
 
LVL 10

Accepted Solution

by:
cstosgale earned 500 total points
ID: 20377775
Hi,

This is most likely an issue with your line. The only way to prove to the SP is at fault however, is to try a different router on the line, ideally the one the ADSL provider supplied. This way, you know the router is not at fault.
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