Fast Ethernet ports 0/0 and 0/1 on Cisco 2600 router

[innojohn69]

Hi everyone?

Can someone enlighten me on what to do to acesss the internet from the Cable modem to the Cisco 2600 router and how to configure them too?

Thank you.

[Tim Y]

Hi innojohn69,

There are a few things that go into that. You need to first define what IP addresses you want your LAN devices to have, and know what type of WAN connection you have (DHCP or static).

I do recommend you learn some basic Cisco administration or you're going to have to ask for help for every little thing that goes wrong. You can start with this guide to the Cisco CLI, and work your way through the other guides. These guides are just short simple examples though meant as a supplementary resource to other learning materials.

Learn how to use the CLI:

http://www.internetworkingcareer.com/command-line/how-to-use-the-cisco-cli/

Now, to answer your question, you need to configure the interfaces and the static route:

To configure the Interfaces and routing from global configuration mode:

Assuming you want 192.168.0.0/24 for the LAN and using a DHCP connection for WAN

interface fa0/1

 ip address 192.168.0.1 255.255.25.0

interface fa0/0

 ip address dhcp

!

ip route 0.0.0.0 0.0.0.0 dhcp

Then, you need to configure:

• DHCP (http://www.internetworkingcareer.com/ccna/how-to-configure-your-cisco-router-as-a-dhcp-server/)
• NAT (http://www.internetworkingcareer.com/ccna/configure-nat-cisco-router/)
• Remote access (http://www.internetworkingcareer.com/ccna/configure-telnet-ssh-remote-access/)

Please use the above guides to configure the rest. There are detailed examples with the configurations included. If you need any further assistance, let us know.

Regards,

Tim

[innojohn69]

when I do 

interface fa0/0 

ip address dhcp

on my cisco 2610 router, I would have to apologize that it does not work.

This is what I get:

nyangau>en
nyangau#config t
Enter configuration commands, one per line. End with CNTL/Z.
nyangau(config)#int fa0/0
nyangau(config-if)#ip address dhcp
^
% Invalid input detected at '^' marker.

nyangau(config-if)#

Thank you.

[Tim Y]

Hi,

Can you show me the output of show ip int br and show run int fa0/0 please?

Thanks,

Tim

[innojohn69]

nyangau#sh ip int br?
brief

nyangau#sh ip int br
nyangau#sh ip int brief ?
FastEthernet FastEthernet IEEE 802.3
Null Null interface
Serial Serial
| Output modifiers
<cr>

nyangau#sh ip int brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned YES unset up up
Serial0/0 unassigned YES unset administratively down down
FastEthernet0/1 unassigned YES unset up down
nyangau#
nyangau#
nyangau#
nyangau#sh run int fa0/0
Building configuration...

Current configuration:
!
interface FastEthernet0/0
no ip address
no ip directed-broadcast
end

nyangau#

[Tim Y]

Hi,

What version is your router? You can tell with show version. Is it lower than 12.1(2)T?

If so, you need to upgrade your router version in order to get this command.

If it is higher than 12.1(2)T can you show me the output of :

int fa0/0

 ip address ?

 ?

I've never seen a router not be able to use ip address dhcp before.

Regards,

Tim

[innojohn69]

I think it is a 12.0 but I will check real quick

[innojohn69]

Hey Tim, upgrade it with what version? Do I have to pay for the software?

[innojohn69]

nyangau#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C2600 Software (C2600-D-M), Version 12.0(4)T, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Wed 28-Apr-99 16:34 by kpma
Image text-base: 0x80008088, data-base: 0x807D7AC0

ROM: System Bootstrap, Version 12.1(3r)T2, RELEASE SOFTWARE (fc1)

[Tim Y]

Anything above 12.1(2)T. If your router is licensed/registered you will be able to download from the Cisco website for free. Just google Cisco 2600 download software to look for it. You will need to log into Cisco with the account that is tied to your product.

Regards,

Tim

[Dan Lukes]

Feedback forum is dedicated to other topics. Moved to more appropriate community.