ADSL Problems

kunal-united · ‎02-12-2006

Sakhr#sh runn

Sakhr#sh running-config

Building configuration...

Current configuration : 2018 bytes

!

version 12.3

no service pad

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname Sakhr

!

boot-start-marker

boot-end-marker

!

enable secret xxxx

!

ip audit notify log

ip audit po max-events 100

ip ssh break-string

no ftp-server write-enable

no scripting tcl init

no scripting tcl encdir

!

no crypto isakmp enable

!

interface Ethernet0

ip address 192.168.20.1 255.255.255.0 secondary

ip address 213.132.133.33 255.255.255.248

ip accounting output-packets

ip nat inside

ip tcp adjust-mss 1452

hold-queue 100 out

!

interface ATM0

no ip address

no atm ilmi-keepalive

pvc 0/33

encapsulation aal5snap

protocol 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 Dialer0

mtu 1492

ip address 10.1.6.102 255.255.255.252

ip nat outside

encapsulation ppp

dialer pool 1

dialer idle-timeout 0

dialer-group 1

!

ip nat inside source list 10 interface Ethernet0 overload

ip nat inside source static 192.168.20.227 213.132.133.34 extendable

ip nat inside source static 192.168.20.146 213.132.133.35 extendable

ip classless

ip route 0.0.0.0 0.0.0.0 10.1.6.101

ip http server

no ip http secure-server

!

access-list 10 permit 192.168.20.0 0.0.0.255

dialer-list 1 protocol ip permit

!

control-plane

!

line con 0

no modem enable

transport preferred all

transport output all

line aux 0

transport preferred all

transport output all

line vty 0 4

login local

transport preferred all

transport input all

transport output all

!

scheduler max-task-time 5000

!

end

I can reach my ISP but cannot browse to the ouside world.

I configuring my DSL router ...but seems everything is ok ...but nothing working

I have checked ...even the configurations at ISP site ...and they are just perfectly fine ...something wrong at my end only

nethelper · ‎02-12-2006

Hello,

the following statement in your configuration doesn´t look right:

ip nat inside source list 10 interface Ethernet0 overload

Try and change that to:

ip nat inside source list 10 interface Dialer0 overload

Also, there is a secondary address on your Ethernet0 interface that appears to be a public IP, what is that used for ?

Sakhr#sh runn

Sakhr#sh running-config

Building configuration...

Current configuration : 2018 bytes

!

version 12.3

no service pad

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname Sakhr

!

boot-start-marker

boot-end-marker

!

enable secret 5 $1$Y/jP$/yi6/NGrMFQZ07KMO.C2n/

!

ip audit notify log

ip audit po max-events 100

ip ssh break-string

no ftp-server write-enable

no scripting tcl init

no scripting tcl encdir

!

no crypto isakmp enable

!

interface Ethernet0

ip address 192.168.20.1 255.255.255.0 secondary

ip address 213.132.133.33 255.255.255.248

ip accounting output-packets

ip nat inside

ip tcp adjust-mss 1452

hold-queue 100 out

!

interface ATM0

no ip address

no atm ilmi-keepalive

pvc 0/33

encapsulation aal5snap

protocol 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 Dialer0

mtu 1492

ip address 10.1.6.102 255.255.255.252

ip nat outside

encapsulation ppp

dialer pool 1

dialer idle-timeout 0

dialer-group 1

!

-->ip nat inside source list 10 interface Dialer0 overload

ip nat inside source static 192.168.20.227 213.132.133.34 extendable

ip nat inside source static 192.168.20.146 213.132.133.35 extendable

ip classless

ip route 0.0.0.0 0.0.0.0 10.1.6.101

ip http server

no ip http secure-server

!

access-list 10 permit 192.168.20.0 0.0.0.255

dialer-list 1 protocol ip permit

!

control-plane

!

line con 0

no modem enable

transport preferred all

transport output all

line aux 0

transport preferred all

transport output all

line vty 0 4

login local

transport preferred all

transport input all

transport output all

!

scheduler max-task-time 5000

!

end

Regards,

Nethelper

kunal-united · ‎02-12-2006

ip nat inside source list 10 interface Ethernet0 overload

This statement is right coz the ethernet0 is configured with public ip addresses.

ip nat inside source list 10 interface Dialer0 overload

This statement is wrong ...coz the dialer is not configured with public ip addresses....How will I go the the internet???

ip address 192.168.20.1 255.255.255.0 secondary is the LAN ip's which is natted to the public ip address.

I have many router configuratons which work ...but this one is quite strange

nethelper · ‎02-12-2006

Hello,

I don´t understand your setup, is the DSL line a second line to a different provider ?

If your provider is connected to the Ethernet0 interface, try the following configuration:

Sakhr#sh runn

Sakhr#sh running-config

Building configuration...

Current configuration : 2018 bytes

!

version 12.3

no service pad

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname Sakhr

!

boot-start-marker

boot-end-marker

!

enable secret xxxx

!

ip audit notify log

ip audit po max-events 100

ip ssh break-string

no ftp-server write-enable

no scripting tcl init

no scripting tcl encdir

!

no crypto isakmp enable

!

-->interface Loopback0

ip address 1.1.1.1 255.255.255.0

!

interface Ethernet0

ip address 192.168.20.1 255.255.255.0 secondary

ip address 213.132.133.33 255.255.255.248

ip accounting output-packets

-->ip nat outside

ip tcp adjust-mss 1452

hold-queue 100 out

-->ip policy route-map ISP

!

interface ATM0

no ip address

no atm ilmi-keepalive

pvc 0/33

encapsulation aal5snap

protocol 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 Dialer0

mtu 1492

ip address 10.1.6.102 255.255.255.252

ip nat outside

encapsulation ppp

dialer pool 1

dialer idle-timeout 0

dialer-group 1

!

ip nat inside source list 10 interface Ethernet0 overload

ip nat inside source static 192.168.20.227 213.132.133.34 extendable

ip nat inside source static 192.168.20.146 213.132.133.35 extendable

ip classless

-->ip route 0.0.0.0 0.0.0.0 Ethernet0

ip http server

no ip http secure-server

!

-->route-map ISP permit 10

match ip address 10

set interface Loopback0

!

access-list 10 permit 192.168.20.0 0.0.0.255

dialer-list 1 protocol ip permit

!

control-plane

!

line con 0

no modem enable

transport preferred all

transport output all

line aux 0

transport preferred all

transport output all

line vty 0 4

login local

transport preferred all

transport input all

transport output all

!

scheduler max-task-time 5000

!

end

Regards,

Nethelper