10-31-2007 09:28 PM - edited 03-03-2019 05:36 AM
Hi,
I have a new cisco 1801 router. I have configured the ATM interface to connect to the local ISP. The connection works but for some reason I cannot use the names of the web pages to go into the internet. However I can use their ip addresses to go to the webpages.I have for the time begin turned off the firewall and had a PAT from ATM to VLAN 1.Looks like my connection isnt picking up the ISP DNS. Any assistance would be greatly appreciated
10-31-2007 11:48 PM
Verify the ip adresses for these DNS servers, they mostly specify two.
Also, there are other dns servers around that might serve your requests, try one of these and see if that helps.
Otherwise, post your config and let us have a look.
regards,
Leo
11-01-2007 01:40 AM
As you can see, I have hard coded in the DNS servers in the router but this is not ideal. I am getting dynamic IP address but not the DNS. Below is my config.
!This is the running config of the router: 10.10.10.1
!----------------------------------------------------------------------------
!version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname yourname
!
boot-start-marker
boot-end-marker
!
logging buffered 51200 warnings
enable secret xxx
!
aaa new-model
!
!
aaa authentication login default local
aaa authorization exec default local
!
aaa session-id common
!
resource policy
!
!
!
ip cef
no ip dhcp use vrf connected
!
ip dhcp pool sdm-pool
network 10.10.10.0 255.255.255.248
default-router 10.10.10.1
dns-server 203.x.x.71 139.130.4.4
lease 0 2
!
!
ip domain name yourdomain.com
ip name-server 203.50.2.71
ip name-server 139.130.4.4
ip name-server 139.130.204.47
ip name-server 139.130.4.5
ip ddns update method sdm_ddns1
DDNS both
!
!
username admin privilege 15 secret xxx
username 357689 privilege 15 secret xxx
!
!
!
!
!
!
interface FastEthernet0
no ip address
duplex auto
speed auto
!
interface FastEthernet0.1
description $ETH-LAN$
encapsulation dot1Q 10
ip address 192.168.10.1 255.255.255.0
ip nat inside
ip virtual-reassembly
no snmp trap link-status
no cdp enable
!
interface FastEthernet0.2
description $ETH-LAN$
encapsulation dot1Q 12
ip address 192.168.12.250 255.255.255.0
ip nat inside
ip virtual-reassembly
no snmp trap link-status
no cdp enable
!
interface BRI0
no ip address
encapsulation hdlc
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4
!
interface FastEthernet5
!
interface FastEthernet6
!
interface FastEthernet7
!
interface FastEthernet8
!
interface ATM0
no ip address
no atm ilmi-keepalive
dsl operating-mode auto
!
interface ATM0.2 point-to-point
no snmp trap link-status
pvc 8/35
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
!
interface Vlan1
description $ETH-SW-LAUNCH$$INTF-INFO-FE 1$
ip address 10.10.10.1 255.255.255.248
ip virtual-reassembly
ip tcp adjust-mss 1452
!
interface Dialer1
ip address negotiated
ip nat outside
ip virtual-reassembly
encapsulation ppp
dialer pool 1
dialer-group 1
no cdp enable
ppp authentication chap pap callin
ppp chap hostname java.util.regex.Matcher[pattern=[a-zA-Z0-9_+-.]+@[a-zA-Z0-9][w.+-]+.[a-zA-Z]{2,} region=0,3230 lastmatch=qlddep40@direct.telstra.net]
ppp chap password 0 xxxxxx
ppp pap sent-username java.util.regex.Matcher[pattern=[a-zA-Z0-9_+-.]+@[a-zA-Z0-9][w.+-]+.[a-zA-Z]{2,} region=0,3230 lastmatch=qlddep40@direct.telstra.net] password 0 xxxxx
!
ip route 0.0.0.0 0.0.0.0 Dialer1
!
!
ip http server
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
ip nat inside source list 1 interface Dialer1 overload
!
access-list 1 remark INSIDE_IF=FastEthernet0.1
access-list 1 remark SDM_ACL Category=2
access-list 1 permit 192.168.10.0 0.0.0.255
dialer-list 1 protocol ip permit
no cdp run
!
!
!
!
!
!
control-plane
!
banner login ^C
cheers
Ravi
11-01-2007 02:22 AM
You are trunking on int fa0. PC hosts will not communicate over a dot1Q trunk. Try this:
interface FastEthernet0
ip address 10.10.10.1 255.255.255.248
ip nat inside
end
modify this acl: access-list 1 permit 192.168.10.0 0.0.0.255
to contain the ip range of your inside network: access-list 1 permit 10.10.10.0 0.0.0.7
With the config as shown, your are not allowing nat for inside hosts on subnet 10.10.10.0
regards,
Leo
11-01-2007 12:56 PM
ip dhcp pool sdm-pool
import all
interface ATM0
no ip address WRONG
negotiated
interface Vlan1
ip nat inside
ip classless
ip nat inside source list 1 interface Dialer1 overload
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