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4
Replies

cisco router 1841 internet issues

I have configured 1841 router yesterday but internet is connected 

 

public ip assigned in fa0 

nat inside outside configured

dhcp pool configured

showing internet access in network setting

ISSUE : google search working but no other website open showing not reachable  

(I have tried diffrent dns 8.8.8.8 and 4.2.2.2 but no luck but internet speed test website working and showing 90mbbs speed) internet provieder jio enterprise

 

I have shared  Configuration below please check and anyone give me the solution please.. thank you in advance.

 

no aaa new-model
!
resource policy
!
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
ip cef
!
!
no ip dhcp use vrf connected
ip dhcp excluded-address 10.0.5.2 10.0.5.40
ip dhcp excluded-address 10.0.0.1 10.0.1.1
!
ip dhcp pool scadcet
network 10.0.0.0 255.255.248.0
default-router 10.0.5.1
dns-server 49.45.0.4 8.8.8.8
!
!
ip name-server 8.8.8.8
!
!
!
!
interface FastEthernet0/0
ip address 136.232.209.10 255.255.255.252
ip nat outside
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 10.0.5.1 255.255.248.0
ip nat inside
duplex auto
speed auto
!
interface Serial0/0/0
no ip address
shutdown
clockrate 125000
!
interface Serial0/0/1
no ip address
shutdown
clockrate 125000
!
ip classless
ip route 0.0.0.0 0.0.0.0 0.0.0.0
ip route 0.0.0.0 0.0.0.0 136.232.209.9
!
ip http server
ip nat inside source list 1 interface FastEthernet0/0 overload
!
access-list 1 permit 10.0.0.0 0.0.255.255
!
control-plane
!
!
line con 0
password scad
line aux 0
line vty 0 4
password scad
login
!
end

 

 

 

 

 

 

 

 

 

 

3 Accepted Solutions

Accepted Solutions

Hello,

 

make the changes/additions marked in bold:

 

no aaa new-model
!
resource policy
!
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
ip cef
!
no ip dhcp use vrf connected
ip dhcp excluded-address 10.0.5.2 10.0.5.40
--> ip dhcp excluded-address 10.0.5.1
ip dhcp excluded-address 10.0.0.1 10.0.1.1
!
ip dhcp pool scadcet
network 10.0.0.0 255.255.248.0
default-router 10.0.5.1
dns-server 49.45.0.4 8.8.8.8
!
ip name-server 8.8.8.8
!
interface FastEthernet0/0
ip address 136.232.209.10 255.255.255.252
ip nat outside
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 10.0.5.1 255.255.248.0
ip nat inside
duplex auto
speed auto
!
interface Serial0/0/0
no ip address
shutdown
clockrate 125000
!
interface Serial0/0/1
no ip address
shutdown
clockrate 125000
!
ip classless
--> no ip route 0.0.0.0 0.0.0.0 0.0.0.0
ip route 0.0.0.0 0.0.0.0 136.232.209.9
!
ip http server
ip nat inside source list 1 interface FastEthernet0/0 overload
!
access-list 1 permit 10.0.0.0 0.0.255.255
!
control-plane
!
line con 0
password scad
line aux 0
line vty 0 4
password scad
login
!
end

View solution in original post

Hello
You have dns forwarding enabled but your rtr is not configured:to forward correclty for clients to use your ISP DNS,
Try the following:

ip dhcp pool scadcet
no dns-server 49.45.0.4 8.8.8.8
dns-server 10.0.5.1

 

no access-list 1 permit 10.0.0.0 0.0.255.255
no dns-server 49.45.0.4 8.8.8.8
no ip name-server 8.8.8.8
no ip route 0.0.0.0 0.0.0.0 0.0.0.0
no ip route 0.0.0.0 0.0.0.0 136.232.209.9

 

access-list 1 permit 10.0.0.0 0.0.7.255
ip route 0.0.0.0 0.0.0.0 fa0/0 136.232.209.9
ip dns-server

 

 


Please rate and mark as an accepted solution if you have found any of the information provided useful.
This then could assist others on these forums to find a valuable answer and broadens the community’s global network.

Kind Regards
Paul

View solution in original post

Thank you now working fne i have done the below changes

 

ip dhcp excluded-address 10.0.5.1

no ip route 0.0.0.0 0.0.0.0 0.0.0.0

no access-list 1 permit 10.0.0.0 0.0.255.255
no ip name-server 8.8.8.8
no ip route 0.0.0.0 0.0.0.0 0.0.0.0

 

access-list 1 permit 10.0.0.0 0.0.7.255
ip dns-server

 

Now working fine 

 

But i cant take telnet any one please help me,,

View solution in original post

4 Replies 4

Hello,

 

make the changes/additions marked in bold:

 

no aaa new-model
!
resource policy
!
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
ip cef
!
no ip dhcp use vrf connected
ip dhcp excluded-address 10.0.5.2 10.0.5.40
--> ip dhcp excluded-address 10.0.5.1
ip dhcp excluded-address 10.0.0.1 10.0.1.1
!
ip dhcp pool scadcet
network 10.0.0.0 255.255.248.0
default-router 10.0.5.1
dns-server 49.45.0.4 8.8.8.8
!
ip name-server 8.8.8.8
!
interface FastEthernet0/0
ip address 136.232.209.10 255.255.255.252
ip nat outside
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 10.0.5.1 255.255.248.0
ip nat inside
duplex auto
speed auto
!
interface Serial0/0/0
no ip address
shutdown
clockrate 125000
!
interface Serial0/0/1
no ip address
shutdown
clockrate 125000
!
ip classless
--> no ip route 0.0.0.0 0.0.0.0 0.0.0.0
ip route 0.0.0.0 0.0.0.0 136.232.209.9
!
ip http server
ip nat inside source list 1 interface FastEthernet0/0 overload
!
access-list 1 permit 10.0.0.0 0.0.255.255
!
control-plane
!
line con 0
password scad
line aux 0
line vty 0 4
password scad
login
!
end

@Georg Pauwen


@Georg Pauwen wrote:

--> ip dhcp excluded-address 10.0.5.1


FYI- Not really applicable to exlcude the default-gaetway address from dhcp alllocation as its done by default


Please rate and mark as an accepted solution if you have found any of the information provided useful.
This then could assist others on these forums to find a valuable answer and broadens the community’s global network.

Kind Regards
Paul

Thank you now working fne i have done the below changes

 

ip dhcp excluded-address 10.0.5.1

no ip route 0.0.0.0 0.0.0.0 0.0.0.0

no access-list 1 permit 10.0.0.0 0.0.255.255
no ip name-server 8.8.8.8
no ip route 0.0.0.0 0.0.0.0 0.0.0.0

 

access-list 1 permit 10.0.0.0 0.0.7.255
ip dns-server

 

Now working fine 

 

But i cant take telnet any one please help me,,

Hello
You have dns forwarding enabled but your rtr is not configured:to forward correclty for clients to use your ISP DNS,
Try the following:

ip dhcp pool scadcet
no dns-server 49.45.0.4 8.8.8.8
dns-server 10.0.5.1

 

no access-list 1 permit 10.0.0.0 0.0.255.255
no dns-server 49.45.0.4 8.8.8.8
no ip name-server 8.8.8.8
no ip route 0.0.0.0 0.0.0.0 0.0.0.0
no ip route 0.0.0.0 0.0.0.0 136.232.209.9

 

access-list 1 permit 10.0.0.0 0.0.7.255
ip route 0.0.0.0 0.0.0.0 fa0/0 136.232.209.9
ip dns-server

 

 


Please rate and mark as an accepted solution if you have found any of the information provided useful.
This then could assist others on these forums to find a valuable answer and broadens the community’s global network.

Kind Regards
Paul