PugwashXP
asked on
Cisco 877W, ADSL and DNS settings
I am trying to setup ADSL access on a new 877W router. I can connect to my ISP but cannot get DNS/domain name resolution to work. The running config is attached. I am asking my ISP for DNS servers.
Version info:
Cisco IOS Software, C870 Software (C870-ADVIPSERVICESK9-M), Version 12.4(24)T1, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Sat 20-Jun-09 02:20 by prod_rel_team
ROM: System Bootstrap, Version 12.3(8r)YI4, RELEASE SOFTWARE
I am using CLI to configure the router.
What have I missed out/got wrong.
Thanks
RunningConfig-192.168.1.1-V2.txt
Version info:
Cisco IOS Software, C870 Software (C870-ADVIPSERVICESK9-M), Version 12.4(24)T1, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Sat 20-Jun-09 02:20 by prod_rel_team
ROM: System Bootstrap, Version 12.3(8r)YI4, RELEASE SOFTWARE
I am using CLI to configure the router.
What have I missed out/got wrong.
Thanks
RunningConfig-192.168.1.1-V2.txt
ASKER
Thanks - but that made no difference. The router is picking up the DNS server from my ISP but this is not being made available to a PC attached to the router.
My current config is below and the attached file has a connection test which shows that the DNS is being picked up correctly - it is just not being passed through.
Thanks in advance
My current config is below and the attached file has a connection test which shows that the DNS is being picked up correctly - it is just not being passed through.
Thanks in advance
Router#term len 0
Router#show run
Building configuration...
Current configuration : 2727 bytes
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
logging message-counter syslog
no logging buffered
enable secret 5 $1$aKnH$v553C2g6OjQ.TcJnHixUs1
enable password 7 002521225508595F1E
!
aaa new-model
!
!
aaa authentication login default local
aaa authorization exec default local
!
!
aaa session-id common
clock timezone PCTime 0
clock summer-time PCTime date Mar 30 2003 1:00 Oct 26 2003 2:00
!
!
dot11 syslog
ip source-route
!
!
ip dhcp excluded-address 192.168.1.1 192.168.1.99
ip dhcp excluded-address 192.168.2.1 192.168.2.99
!
ip dhcp pool Internal-net
import all
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
lease 4
!
ip dhcp pool VLAN20
import all
network 192.168.2.0 255.255.255.0
default-router 192.168.2.1
lease 4
!
!
ip cef
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
username xxx privilege 15 password 7 08007E6A584A574E03
!
!
!
archive
log config
hidekeys
!
!
!
bridge irb
!
!
interface ATM0
no ip address
no atm ilmi-keepalive
pvc 0/38
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
!
interface FastEthernet0
spanning-tree portfast
!
interface FastEthernet1
spanning-tree portfast
!
interface FastEthernet2
spanning-tree portfast
!
interface FastEthernet3
spanning-tree portfast
!
interface Dot11Radio0
no ip address
shutdown
speed basic-1.0 basic-2.0 basic-5.5 6.0 9.0 basic-11.0 12.0 18.0 24.0 36.0 48.0 54.0
station-role root
!
interface Vlan1
description Internal Network
no ip address
ip nat inside
ip virtual-reassembly
bridge-group 1
bridge-group 1 spanning-disabled
!
interface Dialer0
description ##Dialer0##
ip address xx.xx.xx.xx 255.255.255.0
ip nat outside
ip virtual-reassembly
encapsulation ppp
no ip route-cache cef
no ip route-cache
no ip mroute-cache
dialer pool 1
dialer-group 1
ppp authentication chap callin
ppp chap hostname xxx
ppp chap password 7 132425365A5F56732A
ppp ipcp dns request
ppp ipcp address accept
!
interface Dialer1
no ip address
!
interface BVI1
description Bridge to Internal Network
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer0
ip http server
no ip http secure-server
!
!
ip nat inside source list 100 interface Dialer0 overload
!
access-list 100 permit ip 192.168.1.0 0.0.0.255 any
dialer-list 1 protocol ip permit
!
!
!
!
!
control-plane
!
bridge 1 route ip
!
line con 0
password 7 052A342B701F1C5008
no modem enable
line aux 0
line vty 0 4
password 7 072E13681F5A4B5C06
!
scheduler max-task-time 5000
end
WAN-Troubleshooting-Report.doc
ASKER CERTIFIED SOLUTION
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ASKER
Finally solved it using the above (which did not work on its own) and the use of "ip dns spoofing".
Thanks for your pointers
Thanks for your pointers
ASKER
Need additional parameter included in posting
ip dns spoofing shouldn't be needed under normal circumstances.
check this link
http://www.cisco.com/en/US/docs/ios/12_3t/12_3t2/feature/guide/gtdnsspf.html
Configuring DNS Spoofing
This feature turns on DNS spoofing and is functional if any of the following conditions are true:
"The no ip domain-lookup command is configured.
"IP name server addresses are not configured.
"There are no valid interfaces or routes for sending to the configured name server addresses.
If these conditions are removed, DNS spoofing will not occur
check this link
http://www.cisco.com/en/US/docs/ios/12_3t/12_3t2/feature/guide/gtdnsspf.html
Configuring DNS Spoofing
This feature turns on DNS spoofing and is functional if any of the following conditions are true:
"The no ip domain-lookup command is configured.
"IP name server addresses are not configured.
"There are no valid interfaces or routes for sending to the configured name server addresses.
If these conditions are removed, DNS spoofing will not occur
ip domain-lookup - so the router performs dns queries
ip name-server <ip address> - where ip address is the ip of the dns server your isp will give you