AIS AI2524 Example PVC Switching on the Same Router, X25 pvc number1 interface type number pvc

AI2524 Router Card User’s Manual

Configure a Locally Switched PVC

You can configure an X.25 PVC in the X.25 switching software. As a result, DTEs that require permanent circuits can be connected to router acting as an X.25 switch and have a properly functioning con- nection. X.25 resets will be sent to indicate when the circuit comes up or goes down. Both interfaces must define complementary locally switched PVCs.

To configure a locally switched PVC, type (in interface configuration mode):

x25 pvc number1 interface type number pvc

number2 [option]

The command options ar packetsize in out and window- size in out; they allow a PVC's flow control values to be defined if they differ from the interface defaults.

Example: PVC Switching on the Same Router

In this example, a PVC is connected between two serial interfaces on the same router. In this type of interconnection configuration, the des- tination interface must be specified along with the PVC number on that interface. To make a working PVC connection, two commands must be specified, each pointing to the other.

interface serial 0 encapsulation x25 x25 ltc 5

x25 pvc 1 interface serial 1 pvc 4

!

interface serial 1 encapsulation x25 x25 ltc 5

x25 pvc 4 interface serial 0 pvc

1

In global configuration mode, ensure that these TCP sessions remain connected in the absence of XOT traffic by enabling keepalives:

service tcp-keepalives-in

service tcp-keepalives-out

TCP keepalives also inform a router when an XOT SVCs session is not active, thus freeing router resources.

Page 12-34	August 1997
	2524UM