Configuring X2T; Introduction - 3Com MSR 50 Series Configuration Manual

312 C 14: X.25
HAPTER

Configuring X2T

Introduction

LAPB C
AND ONFIGURATION
To do...
Configure a PVC route under
the X.25 template
Return to system view
Enter interface view
Configure the link layer
protocol as FR
Configure the FR interface
type
Configure an FR DLCI and
enter its view
Configure the FR DLCI as
Annex G DLCI
Apply the X.25 Template to
the Annex G DLCI
Return to system view
Enter interface view
Configure the link layer
protocol as X.25
Configure a PVC route
X.25 to TCP switch (X2T) connects X.25 to TCP/IP networks, allowing the access
between X.25 and IP hosts.
Figure 69 Network diagram for X2T
X.25 terminal
X.25
LAPB
Physical Layer
The X.25 terminal has an X.121 address to the IP host. Whenever the router
receives an X.25 call request packet, it checks the destination address of X.121 in
the packet and looks up in the X2T routing table for a match. If there is a
matching route, the router will set up a TCP connection with the host at the
Use the command...
x25 switch pvc pvc-number1
interface interface-type
interface-number [ dlci
dlci-number ] pvc
pvc-number2 [ option ]
quit
interface interface-type
interface-number
link-protocol fr
[ nonstandard | ietf ]
fr interface-type { dce | dte |
nni }
fr dlci dlci-number
annexg { dce | dte }
x25-template name
quit
interface interface-type
interface-number
link-protocol x25 [ dce
|dte ] [ ietf | nonstandard ]
x25 switch pvc pvc-number1
interface interface-type
interface-number [ dlci
dlci-number ] pvc
pvc-number2 [ option ]
Router
TCP
X2T
X.25 IP
Data Link Layer
LAPB
Physical Layer
Remarks
Required
-
-
Required
PPP by default
Required
DTE by default
Required
Required
Required
-
-
Required
PPP by default
Required
IP host
TCP
TCP
IP
Data Link Layer