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Features Used
This network uses the following features on the LAN:
IP routing (Cisco recommends this for management purposes, such as Telnet)
DHCP server (optional)
When your router is acting as a DHCP server, workstations configured as DHCP 
clients are automatically assigned an IP address and subnet mask. 
This network uses the following features on...

 
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Cisco 800 Series Router Configuration
To configure the features for this network example, perform the following steps 
on the PC, starting in the global configuration prompt.
Step 1Specify a name for the router. For example:
router(config)# hostname SanJose
Step 2Specify an encrypted password. For example:
SanJose(config)# enable secret password
Step...

 
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c.Enable PPP:
SanJose(config-if)# encapsulation ppp
d.Enable multilink PPP:
SanJose(config-if)# ppp multilink
e.Create a dialer rotary group, specifying a number between 0 and 255. Dialer 
rotary groups are useful in environments that require multiple calling 
destinations. For example:
SanJose(config-if)# dialer rotary-group 0
f.North America only....

 
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j.Disable CDP.
SanJose(config-if)# no cdp enable
Step 6Specify the characteristics of the dialer rotary group that you created earlier by 
performing the following steps:
a.Change to global configuration mode:
SanJose(config-if)# exit
SanJose(config)#
b.Create a virtual interface by specifying a number between 0 to 255 to 
represent your dialer rotary...

 
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NoteEnter outbound to calculate the load using outbound data only, 
inbound to calculate the load using inbound data only, and either to 
set the maximum calculated load as the larger of the outbound and 
inbound loads.
h.Assign this interface to dialer access group 1:
SanJose(config-if)# dialer-group 1
i.Configure CHAP. To configure PAP, skip this...

 
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Step 8If you have a Cisco 800 series router that is connected to a telephone, fax 
machine, or modem, configure the telephone interface by performing the 
following steps:
a.Specify the country where your router is located. For example:
SanJose(config)# pots country us
This command determines the physical characteristics of the telephone 
interfaces. By...

 
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IP Routing Configuration
To configure IP routing, perform the following steps on your PC:
Step 1Change to global configuration mode:
SanJose(config-if)# exit
SanJose(config)#
Step 2Configure the router to recognize the zero subnet range as a valid range of 
addresses:
SanJose(config)# ip subnet-zero
Step 3Disable the router from translating unfamiliar...

 
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d.To configure the WAN interface to call a site or to receive calls from a site, 
create a dialer map. In the following example, the same command is entered 
twice, once for each dial string provided for the two B channels. The next hop 
address is 10.3.1.2, and the host name is LosAngeles in both entries.
SanJose(config-if)# dialer map ip 10.3.1.2...

 
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Corporate Router Configuration
To configure the features for this sample network, perform the following steps on 
your PC from global configuration mode. This section assumes that the router 
connected to the Cisco 800 series router is a Cisco router that supports Cisco IOS 
software, for example, a Cisco 3600 router. For more information, refer to the...

 
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d.Set the Ethernet 0 IP address as the default gateway. For example:
LosAngeles(dhcp-config)# default-router 10.2.0.1
e.Exit to global configuration mode.
LosAngeles(dhcp-config)# exit
Step 6Configure the WAN interface by performing the following steps:
a.Specify parameters for the WAN interface:
LosAngeles(config)# interface bri0
b.Enable PPP:...