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CHAPTER 5 EXAMPLES OF SETUP ON NETWORKS
– 128 –
NWA-008869-001 Rev.1.0
atch5001.fm
Setup procedure
Setting the digital private line (T1)
Check that the WAN port has been set up properly, referring to “SETTING UP THE WAN PRIVATE LINE
(T1)”. Page 104
Assigning an IP address to the serial interface and setting PPP
To establish an inter-LAN connection with a digital private line, assign an IP address to the serial interface
of WAN or set the IP address as unnumbered.
In this example, the two routers are connected together without assigning an IP address to the digital pri-
vate line of the routers, so that routers A and B operate as if they were a single router. For this reason, the
IP address of the serial interface of WAN is set as unnumbered, so that the address to be used by the In-
Skin Router itself when sending an IP packet to the digital private line is the one assigned to the FastEth-
ernet 0.0 interface of LAN1.
To start PPP on the serial interface, associate the user-defined PPP profile (in this example, “router-a” and
“router-b”) with the serial interface. Use the PPP profile command to create a profile. Then, use the ppp
binding command to associate the created profile with the T1 interface.
Set the LAN addresses of routers A and B according to their respective networks.
Setting for router A
Router # enable − config
Router (config) # ppp profile router − a
Router (config − ppp − router − a) # no ipcp request − local − dns
Router (config − ppp − router − a) # exit
Router (config) # interface FastEthernet0.0
Router (config − FastEthernet0.0) # ip address 192.168.1.1/24
Router (config − FastEthernet0.0) # no shutdown
Router (config − FastEthernet0.0) # interface Serial0.0
Router (config − Serial0.0) # ppp binding router − a
Router (config − Serial0.0) # ip unnumbered FastEthernet0.0
Router (config − Serial0.0) # no shutdown
Router (config − Serial0.0) #
Enter
Enter
Enter
Enter
Enter
Enter
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Enter
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Enter
DIGITAL PRIVATE LINE NETWORK EXAMPLE (T1)