Leased Line configuration on Serial Port (Cisco 1841)

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Hi all,

Just wondering id some one is able to assit me with setting up 2 x
Cisco 1841 To connect to a Leased Line connection. Details Listed

Cisco 1841 Have Cisco IOS 12.1 - Also Have Serial Interface Cards

Site A

Remote Site with a 2mb Leased Line connection
IP Range -
Ideally Would Like Router on IP
Need To connect to Site B for File / Exchange / DHCP

Site B

Main Site With 2mb Leased Line to Site A - Internet Connectivity
Through Gateway
IP Range -

Looking for the best way to connect Site A to B with DHCP provided
internet through


Re: Leased Line configuration on Serial Port (Cisco 1841)
setup a gre tunnel between A and B
add static routes on both routers to reach the LAN subnets through the
confugure ip helper on LAN interface of A
configure DHCP pool on ROuter B for Router A's LAN subnet
encrypt the tunnel after you get everything working

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Re: Leased Line configuration on Serial Port (Cisco 1841)
I don't understand the reason for GRE tunnel LJ mentions, perhaps I'm
not following what you want to do.

When you say you have a 2Mb leased line and your routers have serial
interfaces, I'm assuming that means there is some sort of multiplexer
that telco is providing you to bond multiple T1s?  Or maybe you just
use E1?   At any rate the serial interfaces below may need more
configuration specific to clocking and framing - but you don't provide

Its awfully tough to give you router config without understanding more
of your SITEB setup, but in general ROUTERA is awfully simple to set
up.  It doesn't sound like you have a routing protocol running so
we'll just use a static


interface serial 0/0
 description LINK_TO_ROUTERB_2Mb
 ip address

interface fastethernet 0/0
 ip address
 ip helper-address  (sounds like is a MS DHCP
server of some variety?)

ip route


interface serial 0/0
description LINK_TO_ROUTERA_2Mb
ip address

interface fastethernet 0/0
 description This might not be how your network is laid out, so the
default route below might not make sense if this particular router
doesnt have an interface on 10.1.15.x
 ip address 10.1.15.x

ip route

On Mar 11, 11:49 am, Master of Public Administration
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