Link and Port Configuration
NetRunner W
AN User’s Manual
4-33
Virtual Links
Virtual links are permanent virtual connections (PVCs) between Integration
units which carry traffic terminated or switched at each node.
Configured
Virtual
A1
A1
Note: No FRADs attached
Pass-Through Applications: Attaching Frame Relay Access Devices (FRADs)
Configure the unit as shown in the diagram for the optimum performance.
Connecting FRADs through Integration units
Ports A1 and A2 are configured as
frame relay links on both sides in
this example.
DLCIs are force connected. Both
DLCIs are dedicated to FRAD traffic
Configured
Transparent
Local Unit
Remote Unit
FRAD
FRAD
A2
A1
A1
A2
Configured
Fragmentation
Node_A
Node_B
Second DLCI required for
any Integration traffic
attached to the node
Key:
FRAD
=
Frame Relay Access Device
●
=
Force Connect
=
Frame Relay Link
=
PVC/DLCI
D
The DLCI with a FRAD should be force connected to the network side
DLCI (in the example this is Node_A/A2.xxxx to Node_A/A1.xxxx,
where xxxx = DLCI). Refer to page 522 for information on force
connection. Once force connected, all the DLCIs in the path are
considered a single permanent virtual circuit (PVC).