09-10-2008 01:00 AM - edited 03-03-2019 11:28 PM
Hello everybody
could any one help me in this please.
iam having cisco 1841 router and i want to configure this router for internet connection.
below are the configuration please let me know what is wrong, thank you.
Solved! Go to Solution.
10-21-2008 03:31 AM
Hello Ala,
the router can solve
try
ping www.google.com
the URL http://www.google.com is for use on a browser on a PC not sure a router can solve it.
you need the presence of the command
ip domain-lookup
ip name-server 194.170.1.7
I cannot test this in production routers
Hope to help
Giuseppe
09-10-2008 01:02 AM
version 12.4
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers
!
hostname tiger
!
boot-start-marker
boot-end-marker
!
logging buffered 51200 debugging
logging console critical
enable secret xxx
enable password xxx
!
no aaa new-model
!
resource policy
!
clock timezone PCTime 4
mmi polling-interval 60
no mmi auto-configure
mmi pvc 0/50
mmi snmp-timeout 180
ip subnet-zero
ip cef
!
!
ip tcp synwait-time 10
no ip dhcp use vrf connected
!
!
vpdn enable
vpdn ip udp ignore checksum
!
vpdn-group pppo
request-dialin
protocol pppoe
!
!
!
!
!
interface FastEthernet0/0
description ADSL LAN Interface$ES_LAN$$ETH-LAN$
ip address 10.10.10.1 255.255.255.248
no ip redirects
no ip unreachables
no ip proxy-arp
ip nbar protocol-discovery
ip nat inside
ip tcp adjust-mss 1452
no ip mroute-cache
duplex auto
speed auto
no cdp enable
no mop enabled
!
interface FastEthernet0/1
description ADSL WAN Interface$ES_WAN$
no ip address
no ip unreachables
no ip proxy-arp
no ip mroute-cache
duplex auto
speed auto
pppoe enable
pppoe-client dial-pool-number 1
no cdp enable
!
interface Dialer1
ip address negotiated
ip mtu 1452
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname alaeldien
ppp chap password ***********
ppp pap sent-username alaeldien password ************
!
ip classless
ip route 0.0.0.0 0.0.0.0 FastEthernet0/0
ip route 0.0.0.0 0.0.0.0 Dialer1
!
ip http server
ip nat inside source list 1 interface Dialer1 overload
ip nat inside source list acl1 pool pool1
!
logging trap debugging
access-list 1 permit 0.0.0.0 255.255.255.0
access-list 1 permit 10.10.10.0 0.0.0.255
dialer-list 1 protocol ip permit
snmp-server community public RO
!
09-10-2008 01:50 AM
Hello Ala,
int dialer 1
ip nat outside
to have NAT to work
access-list 1 :
I don't understand the first line, the second line is enough for nat
use
access-list 2 permit 10.10.10.0 0.0.0.255
no ip nat inside source list acl1 pool pool1
no ip nat inside source list 1 interface Dialer1 overload
ip nat inside source list 2 interface Dialer1 overload
you can use debug ppp neg and debug ppp auth to see if authentication is ok
Hope to help
Giuseppe
09-10-2008 02:40 AM
hello
thank you for your immediate response
i have tried your suggestion
icome up accross
all interfaces are up
but when iam pinging to the internet
it shows me this msg"Unrecognized host or protocol not running"
what to do please advice
thank you
09-10-2008 09:50 AM
Hello Ala,
first of all I would issue:
config
ip routing
then try again
Hope to help
Giuseppe
09-10-2008 09:01 PM
hello
thanks again
i did what you suggest this time when iam issuing the debug ....!!commands it shows me only debugging in on with out showing any information.
suppose if i issue debug auth"debug auth is on"
and so on , so how to deal with it
with lot of thanks
09-10-2008 11:31 PM
Hello Ala,
thank you very much for your kind remarks.
If you are in a telnet or ssh session you need to use
Router# terminal monitor
to see debug output
Router# terminal no monitor
to remove it
use two sessions one with term mon and another without where you are ready to disable debug if necessary (if cpu goes very high use sh proc cpu | inc util to see this on the second session)
if you like you can also post the sh int dialer 1
check if the ppp state is OPEN this would mean everything is OK.
if not ok you can post the output of debug ppp neg and debug ppp auth here.
Hope to help
Giuseppe
09-14-2008 01:56 AM
good after
here is out put of the interface dialer1
Dialer1 is up, line protocol is up (spoofing)
Hardware is Unknown
Internet address will be negotiated using IPCP
MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, loopback not set
Keepalive set (10 sec)
DTR is pulsed for 1 seconds on reset
Last input never, output never, output hang never
Last clearing of "show interface" counters 01:01:10
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/0/16 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 42 kilobits/sec
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes
0 packets output, 0 bytes
and the state is open after issuing debug command
what do you suggest
09-14-2008 02:53 AM
Hello Ala,
good to hear from you.
Something is not working.
post the output of debug ppp negotiation and debug ppp negotiation so that it is possible to investigate.
You say that the state is open after issuing debug commands.
PPPoE is however a dialup technology so some event has to trigger "the call".
Depending on the client telnet software you are using you have the option to save a log file.
Hope to help
Giuseppe
10-05-2008 02:58 AM
hello every body
iam opening this case again becasue the last attempts did not work
so here is the running config
vpdn enable
vpdn ip udp ignore checksum
!
vpdn-group pppoe
request-dialin
protocol pppoe
!
!
!
!
!
interface FastEthernet0/0
description ADSL LAN Interface
ip address 10.10.10.1 255.255.255.248
ip nat inside
duplex auto
speed auto
!
interface FastEthernet0/1
description WAN Interface
ip address dhcp
no ip unreachables
shutdown
duplex auto
speed auto
pppoe enable
pppoe-client dial-pool-number 1
no cdp enable
!
interface Dialer1
ip address dhcp client-id FastEthernet0/1
ip nat outside
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication pap callin
ppp chap hostname falcon-wimax
ppp chap password xxx
ppp pap sent-username fsecuri password xxx
!
ip classless
!
ip http server
ip nat inside source list 1 interface Dialer1 overload
!
access-list 1 permit 10.10.10.0 0.0.0.255
10-05-2008 09:58 AM
Hello Ala,
sorry to hear you case is still open
using PPPoE or PPPoA or any other variation the ip address is not provided by DHCP but by IPCP that is part of PPP negotiation.
so config of dialer should contain
int dialer 1
ip address negotiated
! means negotiated by IPCP
so this has to be fixed.
then you need a default static route using dialer1 as output interface
ip route 0.0.0.0 0.0.0.0 Dialer1
After this you can troubleshoot the pppoe session by using the following
terminal monitor
debug ppp negotiation
debug ppp authentication
look for errors in authentication that will stop the PPP negotiation process
you have configured parameters for CHAP and PAP with different username and passwords.
try to use
ppp authentication pap chap
instead of
ppp authenticastion pap callin
collect the output of debugs and if you like post here
to get help in understanding it.
in a working link you will see
sh int dialer1
..
IPCP open
...
Hope to help
Giuseppe
10-05-2008 09:10 PM
10-05-2008 10:33 PM
Hello Ala,
unfortunately I cannot see the file contents this docx file format is not a text file.
May you save the file as an ASCII text file and post it again ?
Thanks for your patience and kind remarks I hope we will find a solution to your issue.
Best Regards
Giuseppe
10-05-2008 11:24 PM
10-06-2008 01:47 AM
Hello Ala,
you have an authentication issue:
the other side wants to use CHAP and your side wants to use PAP.
I : input : received on your side
O : output sent from your side
see the following sequence:
*Oct 6 05:03:08.335: Vi1 LCP: I CONFREQ [REQsent] id 248 len 18
*Oct 6 05:02:00.391: Vi1 LCP: AuthProto CHAP (0x0305C223
*Oct 6 05:03:08.335: Vi1 LCP: MRU 1492 (0x010405D4)Oct 6 05:
*Oct 6 05:02:00.391: Vi1 LCP: O CONFREQ [RE
*Oct 6 05:03:08.335: Vi1 LCP: AuthProto PAP (0x0304C023)
*Oct 6 05:01
*Oct 6 05:02:00.391: Vi1 LCP: AuthPr
*Oct 6 05:03:08.335: Vi1 LCP: MagicNumber 0x219
*Oct 6 05:03:08.355: Vi1 LCP: MagicNumber 0x21911AC0 (0x050621911AC0)305)
*Oct 6 05:01:14.
*Oct
*Oct 6 05:03:08.355: Vi1 LCP: O CONFNAK [REQsent] id 249 len 8E3C)
*Oct 6 05:01:14.987: Vi1
*Oct 6 05:03:08.355: Vi1 LCP: MRU 1500 (0x010405DC)[ACKsent] id 8 len 9
*Oct 6 0
*Oct 6 05:03:08.375: Vi1 LCP: I CONFREJ [REQsent] id 2 len 9uthProto CHAP (0x0305C22305)
*Oct 6 05:03:08.375: Vi1 LCP: AuthProto CHAP (0x0305C22305)CONFREQ [ACKsent] id 9 len 14
*Oct 6 05:03:08.375: Vi1 LCP: O CONFREQ [REQsent] id 3 len 14AuthProto PAP (0x0304C023)
*Oct 6 05:03:08.375: Vi1 LCP: MRU 1492 (0x010405D4)15
the key point is that if authentication fails no ip address is assigned and the dialer is torned down
there is also a mismatch in MTU: pppoe uses 8 bytes so mtu -> 1492
use
int dialer1
mtu 1492
ppp authentication chap
and repeat the troubleshooting procedure with
term mon
debug ppp neg
debug ppp auth
this time you should see something different.
Hope to help
Giuseppe
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