Configuration Procedure - 3Com MSR 50 Series Configuration Manual

Configuration Procedure

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destination IP address of the X2T route. After that, the router will extract the pure
data from the X.25 packet and send them to the IP host through the TCP
connection.
The IP host can go through the IP address on the interface of the IP network to
access the X.25 host. Whenever the router receives a TCP connection request, it
checks the destination IP address and TCP port number of the TCP connection and
looks up in the X2T routing table for a match. If there is a match, the router will
set up an X.25 SVC destined to the host at the associated destination X.121
address of the X2T route. After that, the router will extract the pure data from the
TCP packet and send them to the X.25 host through the X.25 SVC. If the router
sets up a PVC connection with X.25 host, it transmits the data directly to X.25
host through X.25 PVC.
To configure X2T, use the following commands:
To do...
Enter system view
Enable X.25 switching
Configure X.25 interface
Configure IP interface
Configure an X.25-to-IP X2T
forwarding route
Configure an Configure a PVC
IP-to-X.25 forwarding
X2T route for PVC
forwarding link
route
Configure an
SVC route and a
forwarding
route for SVC
link
CAUTION:
Number of X2T mapping entries varies by device. The maximum number of
■
entries is 100 by default, including both entries configured using the translate
ip and translate x25 commands.
When specifying a port number using the translate ip command, for an IP
■
address using one port, specify port 102, for an IP address using multiple ports,
specify port numbers from 1024 to 5000 instead of well known port numbers
such as 21, 23 to avoid network failures.
Use the command...
system-view
x25 switching
Refer to "Configuring X.25
Interface Parameters" on
page 286.
Refer to IP Services volume.
translate x25 x.121-address
ip ip-address port
port-number
translate ip ip-address port
port-number pvc
interface-type
interface-number
pvc-number
translate ip ip-address port
port-number x25
x.121-address
x25 switch svc [ -number ]
x.121-address [ sub-dest
destination-address ]
[ sub-source
source-address ] * interface
interface-type
interface-number [ dlci
dlci-number ]
Configuring X2T 313
Remarks
-
Required
Required
Unnecessary to specify an
X.121 address for the
interface
Required
Required
Select either one.