Basic Configurations 3-11

Routing a Cisco 700 Series Router to an ISP Instructions

Following is the command summary for c onfiguring the remote Cisco700 series router to
connect to an ISP:
set system
764
cd lan
set ip address
172.16.17.9
set ip netmask
255.255.255.248
set ip routing on
set user
isp
set number
5558011
set ppp password client
set ppp secret client
set ppp address negotiation local on
set ip routing on
set ip route destinatio
n 0.0.0.0/0
gateway
0.0.0.0
propagate on
set bridging off
set ip address
0.0.0.0
set ip netmask
0.0.0.0
set timeout
360
set ip pat on
set active
reboot
If you are being charged for each connection, you can use the set timeout command to set
the timeout to zero. Doing so ma intai ns your co nnecti on and minim izes t he num ber of fee s.
Routing IP to a Central Site
This section describes how to config ure a re mote Cisco 765 router and a central site
Cisco 765 router for on-demand IP routing using PPP.
PPP addresses issues that include the assignment and management of IP addresses,
asynchronous (start/stop) and bit-oriented sy nchronous encapsulation, network protocol
multiplexing, error detection, and option negotiation.
PPP addresses these issues by providing an extensible Link Control Protocol (LCP) and a
family of Network Control Protocols (NCPs) to negoti ate optional configuration
parameters and facilities. PPP supports IP and IPX.
Figure 3-3 is an illustration of the configuration used in this example.