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1941 Router dns problem

neworleansihg
Level 1
Level 1

Hello all, i am new to Cisco Routers and am having a problem configuring my new 1941 Router. The 0/0 interface is attached to my broadband and gets it's ip via dhcp, the 0/1 interface is connected to my lan and has a dhcp pool. My problem is that the 0/0 interface does not appear to be getting any dns servers. So i have either missed something or need to add the dns servers manually to my dhcp pool. Below is my config, any help would be gratefully received. Thanks

!

hostname yourname

!

boot-start-marker

boot-end-marker

!

!

logging buffered 51200 warnings

!

no aaa new-model

!

no ipv6 cef

ip source-route

ip cef

!

!

!

ip dhcp excluded-address 192.168.2.1 192.168.2.10

!

ip dhcp pool DHCP-POOL

network 192.168.2.0 255.255.255.0

default-router 192.168.2.1

!

!

ip domain name yourdomain.com

multilink bundle-name authenticated

!

crypto pki token default removal timeout 0

!

crypto pki trustpoint TP-self-signed-3731648826

enrollment selfsigned

subject-name cn=IOS-Self-Signed-Certificate-3731648826

revocation-check none

rsakeypair TP-self-signed-3731648826

!

!

crypto pki certificate chain TP-self-signed-3731648826

certificate self-signed 01 nvram:IOS-Self-Sig#1.cer

license udi pid CISCO1921/K9 sn FTX1625800U

!

!

username timmsn privilege 15 secret 4 J1pYUY4Kn9wGqSIyJ7oK2cmFV/3nTaPxVqF1skJWMD

I

!

!

!

!

!

!

interface Embedded-Service-Engine0/0

no ip address

shutdown

!

interface GigabitEthernet0/0

description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-GE 0/0$

ip address dhcp

ip nat outside

ip virtual-reassembly in

duplex auto

speed auto

!

interface GigabitEthernet0/1

ip address 192.168.2.1 255.255.255.0

ip nat inside

ip virtual-reassembly in

duplex auto

speed auto

!

ip forward-protocol nd

!

ip http server

ip http access-class 23

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 GigabitEthernet0/0 overload

ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0

!

access-list 1 permit 192.168.0.0 0.0.191.255

access-list 23 permit 10.10.10.0 0.0.0.7

!

!

!

control-plane

!

!

banner exec ^C

% Password expiration warning.

-----------------------------------------------------------------------

Cisco Configuration Professional (Cisco CP) is installed on this device

and it provides the default username "cisco" for  one-time use. If you have

already used the username "cisco" to login to the router and your IOS image

supports the "one-time" user option, then this username has already expired.

You will not be able to login to the router with this username after you exit

this session.

It is strongly suggested that you create a new username with a privilege level

of 15 using the following command.

username <myuser> privilege 15 secret 0 <mypassword>

Replace <myuser> and <mypassword> with the username and password you want to

use.

-----------------------------------------------------------------------

^C

banner login ^C

-----------------------------------------------------------------------

Cisco Configuration Professional (Cisco CP) is installed on this device.

This feature requires the one-time use of the username "cisco" with the

password "cisco". These default credentials have a privilege level of 15.

YOU MUST USE CISCO CP or the CISCO IOS CLI TO CHANGE THESE  PUBLICLY-KNOWN

CREDENTIALS

Here are the Cisco IOS commands.

username <myuser>  privilege 15 secret 0 <mypassword>

no username cisco

Replace <myuser> and <mypassword> with the username and password you want

to use.

IF YOU DO NOT CHANGE THE PUBLICLY-KNOWN CREDENTIALS, YOU WILL NOT BE ABLE

TO LOG INTO THE DEVICE AGAIN AFTER YOU HAVE LOGGED OFF.

For more information about Cisco CP please follow the instructions in the

QUICK START GUIDE for your router or go to http://www.cisco.com/go/ciscocp

-----------------------------------------------------------------------

^C

!

line con 0

login local

line aux 0

line 2

no activation-character

no exec

transport preferred none

transport input all

transport output pad telnet rlogin lapb-ta mop udptn v120 ssh

stopbits 1

line vty 0 4

access-class 23 in

privilege level 15

login local

transport input telnet ssh

line vty 5 15

access-class 23 in

privilege level 15

login local

transport input telnet ssh

!

scheduler allocate 20000 1000

end

yourname#

1 Accepted Solution

Accepted Solutions

cadet alain
VIP Alumni
VIP Alumni

Hi,

if you want hosts on your LAN to inherit the DNs servers provided by ISP via DHCP you should add this line in your DHCP pool:

import all

You could use show ip dns view to see DNS servers and I also recommand to change your default route:

no ip route 0.0.0.0 0.0.0.0 G0/0

ip route 0.0.0.0 0.0.0.0  dhcp

Regards.

Alain

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View solution in original post

3 Replies 3

cadet alain
VIP Alumni
VIP Alumni

Hi,

if you want hosts on your LAN to inherit the DNs servers provided by ISP via DHCP you should add this line in your DHCP pool:

import all

You could use show ip dns view to see DNS servers and I also recommand to change your default route:

no ip route 0.0.0.0 0.0.0.0 G0/0

ip route 0.0.0.0 0.0.0.0  dhcp

Regards.

Alain

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.

Thanks for the reply, what exact command would i use to add the import all? I have not been able to find how to make changes to my dhcp pool since i created it.

Thanks

Never mind i found it, Thanks

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