
Data Link Switching Overview
304233-A Rev. 00
1-29
Figure 1-15. Boundary Function Virtual Circuit
APPN and DLSw send and receive messages on external links 1 and 2 and pass
messages to each other through the virtual circuit.
The DLSw/APPN boundary function allows DLSw to provide remote
communications via an IP backbone and provide access over this backbone from
enterprise-level applications using an APPN network.
APPN DLSw
VCCT
External link 1
External link 2
Key
VCCT=virtual circuit
DLS0036A
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