Configuring Additional Parameters For X.25 Datagram Transmission - 3Com MSR 50 Series Configuration Manual

294 C 14: X.25
HAPTER AND
n
Configuring Additional
Parameters for X.25
Datagram Transmission
LAPB C
ONFIGURATION
To do...
Specify the VC range
Create a PVC
Since the default two-way channel range: LTC=1, HTC=1024 does not support
■
PVC configuration, you need to specify a VC range using the x25 vc-range
command to create a PVC.
If a PVC has no related parameters configured, its traffic control parameters are
■
the same as that of its X.25 interface that is set by the commands x25
packet-size, x25 window-size.
X.25 allows the addition of some characteristics, including a series of optional user
facilities provisioned in ITU-T Recommendation X.25, for the sake of improving
performance and broadening application ranges.
This section describes how to configure such additional features, including the
options in the x25 map and x25 pvc command. Select and configure these
additional features according to X.25 network structure, and the services provided
by service provider.
To configure additional parameters for X.25 datagram transmission, use the
commands described in the following sub sections:
To do...
Enter system view
"Specify the maximum idle time of SVC" on page 294
"Specify the maximum number of SVCs allowed to associate with the same
address mapping" on page 295
"Configure packet pre-acknowledgement" on page 295
"Configure X.25 user facility" on page 296
"Configure the data queue length of VC" on page 297
"Broadcast via X.25" on page 298
"Restrict the use of address mapping" on page 298
Specify the maximum idle time of SVC
For the sake of cost saving, you can specify an SVC idle time upon the expiration
of which the SVC will be disconnected. Enabling this feature will not affect the
data transmission, as a new SVC can be set up again if there are new packets
waiting for transmission.
To configure an SVC idle time, use the following commands:
To do...
Enter system view
Use the command...
x25 vc-range { bi-channel ltc htc
[ out-channel loc hoc ] |
in-channel lic hic [ bi-channel ltc
htc ] [ out-channel loc hoc ] |
out-channel loc hoc }
x25 pvc pvc-number protocol-type
protocol-address x121-address
x.121-address [ option ]
Use the command...
system-view
Remarks
Required for PVC
creation
Required
Not created by default
Remarks
-
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Remarks
-