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Issue with 1800 router

yannis.varni
Level 1
Level 1

Hi,

I'm in trouble with my 1802 router. It's connected on ADSLoPOTS with PPPoA. I can ping any address on the Internet from my client, but I can't get, through a browser, the content of any sites (excluding google, orange (my ISP), and some other sites that require no multiple connection to fetch the page). Moreover, when I ping some particular address, I get one response then all the request fail. In fact, when I do a tracert of any domain, the route stop at the first step on a 172.16.x like address. The point is that there's no such network in my configuration.

Here's the configuration of my router:

Current configuration : 1899 bytes
!
! Last configuration change at 16:02:59 UTC Thu Nov 4 2010
!
version 15.0
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip source-route
!
!
ip dhcp excluded-address 192.168.10.210 192.168.10.254
!
ip dhcp pool dhcpvigeo
   network 192.168.10.0 255.255.255.0
   default-router 192.168.10.253
   dns-server 192.168.50.250
   domain-name vigeo.com
!
!
ip cef
multilink bundle-name authenticated
!
!
license udi pid CISCO1801 sn FCZ142891VJ
!
!
!
!
!
!
interface ATM0
no ip address
ip virtual-reassembly
atm ilmi-keepalive
pvc 8/35
  encapsulation aal5mux ppp dialer
  dialer pool-member 1
!
!
interface BRI0
no ip address
encapsulation hdlc
shutdown
!
interface FastEthernet0
ip address 192.168.10.253 255.255.255.0
ip nat inside
ip virtual-reassembly
duplex auto
speed auto
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4
!
interface FastEthernet5
!
interface FastEthernet6
!
interface FastEthernet7
!
interface FastEthernet8
!
interface Vlan1
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly
!
interface Dialer0
mtu 1492
ip address negotiated

ip nat outside
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication pap callin
ppp chap hostname fti/******
ppp chap password 0 ********
ppp pap sent-username fti/********* password 0 ******
no cdp enable
!
ip forward-protocol nd
!
!
no ip http server
ip nat pool dhcpvigeo 192.168.10.0 192.168.11.0 netmask 0.0.0.255
ip nat inside source list 1 interface Dialer0 overload
ip route 0.0.0.0 0.0.0.0 Dialer0
!
access-list 1 permit 192.168.10.0 0.0.0.255
dialer-list 1 protocol ip permit
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
login
!
end

I have another question: is it possible to fix dynamicly the bandwidth of Dialer0? because it's fixed at 56 Kb/s by default (I have a 8Mb/s connection).


Can someone help me to fix it ouf?

I have been working on that issue for 3 days.. So I have hardly googled, and didn't find anything relevant for my problem.


Thanks in advance,

Yannis Varni

1 Accepted Solution

Accepted Solutions

hello

try the following config to see if you're having issues with MTU/fragmentation

interface FastEthernet0

ip adjust-mss 1452

more details here:

http://www.cisco.com/en/US/tech/tk175/tk15/technologies_tech_note09186a0080093bc7.shtml

hth

andy

View solution in original post

5 Replies 5

yannis.varni
Level 1
Level 1

Excuse me for the mistake, the tracert was launched on a VM wich was connected by NAT (it explains the result). But it doesn't solve my problem. Any suggestion?

Regards,

Yannis Varni

hello

try the following config to see if you're having issues with MTU/fragmentation

interface FastEthernet0

ip adjust-mss 1452

more details here:

http://www.cisco.com/en/US/tech/tk175/tk15/technologies_tech_note09186a0080093bc7.shtml

hth

andy

Thanks for the command, it works fine now.

I have another question: is it possible to have a dynamic bandwidth for my ADSL connexion? because Dialer0 have a BD of 56kb/s and ATM0 876kb/s instead of 8Mb/s (which is my connexion capabiliy). Or is it a point of no importance?

Regards,

Yannis Varni

the bandwidth settings on these interfaces are used for routing metrics etc and don't affe

ct the speed of your connection.

hth

andy

Thanks you very much for your support.

Have a nice day,

Yannis Varni

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