User manual

7 LAPB and X.25 configuration
Nortel Secure Router 8000 Series
Configuration -WAN Access
7-22 Nortel Networks Inc. Issue 5.3 (
30 March 2009)
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Run the x25 pvc pvc-number protocol protocol-address x121-address x.121-address
[ option ] command to configure the PVC.
When configuring the permanent virtual circuit on the sub-interface, you must divide the range of the
virtual template on the main interface.
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The X.25 sub-interface is a virtual interface with its own protocol address and VC.
You can create multiple sub-interfaces on a physical interface interconnecting the networks
through one physical interface. All the sub-interfaces under the main interface share the same
X.121 address as the main interface.
The sub-interface of X.25 can be divided into two types:
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Point-to-point sub-interface connects a single remote end.
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Point-to-multipoint sub-interface connects multiple remote ends in the same network
segment.
If sub-interfaces exist and if you run the shutdown command and the undo shutdown command on the
main interface in succession, you must use the two commands at an interval of at least 15 seconds.
7.3.5 Checking the configuration
Run the following commands to check the previous configuration.
Action Command
Display information on
interfaces.
display interface [ interface-type interface-number ] [ |
{ begin | exclude | include } regular-expression ]
7.4 Configuring X.25 datagram transmission
7.4.1 Establishing the configuration tTask
Applicable environment
You configure the function of X.25 first to transmit data through X.25 network,.
Preconfiguration tasks
Before configuring X.25 datagram transmission, complete the following task:
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Powering on the router and start the router normally
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Connecting the interface and configuring the physical parameters of the interface
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Configuring the X.25 protocol on the interface and the X.25 parameters.