how to ?

[andrilo123]

hello every one.

-how can i connect an old 2600 router to a linksys WRT54G2. to access the internet. i think it is not posible

-what device do i need to be able to do it

[Bilal Nawaz]

You can do this, funnily enough I tried this with an 1801 and a WRT.

You need to plug in the router to the linksys on the LAN port. Configure like this

Conf t

Interface faX/X
Description ## connects to linksys ##
IP address dhcp

This is just for your router to access the Internet. If you have a LAN off of your router You will need to do NAT.

Hope this helps

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[andrilo123]

Thanks for you information.

when you mean " if you have a LAN off your router you need to do NAT" .   If i have a LAN inside my 2600 router i wiil need to to nat translation.

also the WRT will not need any configuration?

thanks

[Bilal Nawaz]

Yes this is correct. WRT you can leave as default. I'll give you a quick example. Lets say our LAN in the router is connected to fa0/1 to a switch.

We will plug the fa0/0 in the linksys. We will configure like this:

Conf t
Interface fa0/0
Description ## link to linksys ##
IP address dhcp
Ip nat outside
!
Interface fa0/1
IP address 10.0.0.1 255.255.255.0
Ip nat inside
!
Ip access-list standard my_lan
Permit 10.0.0.0 0.0.0.255
!
Ip nat inside source list my_lan interface fa0/0 overload

Remember if you have clients that are on the LAN off of your router you will need DHCP too.

Ip dhcp excluded-address 10.0.0.0 10.0.0.10

Ip dhcp pool 10
Network 10.0.0.0 255.255.255.0
Default-router 10.0.0.1
Dns-server 8.8.8.8

Hope this helps

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[andrilo123]

hello

thanks for everything.

the ciso 2600 i have, it has only one fa0/0 and one serial connected to another router.

[Bilal Nawaz]

Is there a requirement that the connected router also needs to get to the Internet?
If so, we just need add the network in the access-list for NAT, and have a default route on the other router outbound towards the linksys.

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