Cisco 2501 cant see the leased Line

[MikeTurner22]

Hi Guys

I have a Cisco 2501 connected to a Demon leased line and the to my internal network obviously both are on seperate Subnets and IP Ranges, I can tracrout both my internal range and external range when telneting into the router, but If I change my default gateway to the routers IP I cant connect to the internet. Why is this? I presume it is routing issue but I dont know what to do can anyone help.

Thanks in advance,
Mike.

 

[terminaljunkie]

Mike,

Can you post your config for the interface you are trying to connect to Demon?


Best Regards,

<*>terminaljunkie<*>

 

[MikeTurner22]

Building configuration...

Current configuration:
!
version 11.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
no service udp-small-servers
no service tcp-small-servers
!
hostname microplus
!
enable secret 5 $1$zyP5$9.bHlu5/kCGZb4XRzMiMs/
!
ip subnet-zero
no ip domain-lookup
!
interface Ethernet0
description connected to EthernetLAN
ip address 192.168.25.100 255.255.255.0
no mop enabled
!
interface Serial0
description connected to Internet
ip address 193.195.90.194 255.255.255.192
encapsulation ppp
!
interface Serial1
no ip address
shutdown
!
router rip
version 2
passive-interface Serial0
network 192.168.25.0
no auto-summary
!
no ip classless
ip route 0.0.0.0 0.0.0.0 Serial0
snmp-server contact Michael Turner,01727 799670,michaelt@microplus.co.uk
!
line con 0
exec-timeout 0 0
password microplus
login
line aux 0
line vty 0 4
password microplus
login
!
end

 

[ChrisAC]

If you are connecting to it from the LAN side and using it's ethernet address as your default gateway, then of course you won't be able to get on the internet. You have not configured NAT.

Chris.


**********************
Chris Andrew, CCNA, CCSA
chris@iproute.co.uk
**********************

 

[MikeTurner22]

How do I go about doing this? I am pretty new to this.

 

[gaveeve]

interface Ethernet0
description connected to EthernetLAN
ip address 192.168.25.100 255.255.255.0
IP NAT INSIDE
no mop enabled
!
interface Serial0
description connected to Internet
ip address 193.195.90.194 255.255.255.192
IP NAT OUTSIDE
encapsulation ppp
!
interface Serial1
no ip address
shutdown
!
router rip
version 2
passive-interface Serial0
network 192.168.25.0
no auto-summary
!
no ip classless
ip route 0.0.0.0 0.0.0.0 Serial0
IP NAT INSIDE SOURCE LIST 1 INTERFACE SERIAL1 OVERLOAD
ACCESS-LIST 1 PERMIT 192.168.25.0 0.0.0.255