Chapter 12: AI2524 X.25 Configuration Steps
August 1997 Page 12-35
2524UM
Example: Simple Remote PVC Tunneling
In this example, a connection is established between two PVCs across
a LAN. Because the connection is remote (across the LAN), the tun
neling command is used. This exam pl e es t abl ishe s a PVC between
Router X, Serial 0, PVC 1 and Router Y, Serial 1, PVC 2. K eepalives
are enabled to maintain connection notification. Figure 12-4 provides
a visual representation of the configuration.
Figure 12-4:X.25 Tunneling Connection
Configuration for Router X
service tcp-keepalives-in
service tcp-keepalives-out
interface serial 0
x25 pvc 1 tunnel 172.20.1.2 interface serial 1 pvc 2
Configuration for Router Y
service tcp-keepalives-in
service tcp-keepalives-out
interface serial 1
x25 pvc 2 tunnel 172.20.1.1 interface serial 0 pvc 1
Configure an XOT (Remote) PVC
A PVC can be connected to another router over a LAN with the XOT
protocol. When the interfaces come up, a TCP connection is estab-
lished to the router that is acting as the switch for the destination. All
X.25 packets will be sent and received over this reliable data stream.