AIS Router AI2524 - Manual (Page 292)

AI2524 Router Card User’s Manual
Page 12-34 August 1997
2524UM
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.