Avocent Cyclades-PR4000 - Manual (Page 87)

Chapter 10 - Data-Link Protocols (Encapsulation)
Cyclades-PR4000
87
To edit the DLCI table, use the list command (CONFIG=>INTERFACE=><LINK>=>ENCAPSULATION
=>FRAME RELAY=>L) to discover the number CyROS has assigned to each table entry. It will not be the
same as the DLCI.
Modem or
DSU/CSU
X.25
Switch / DCE Switch / DCE
Router / DTE
Router / DTE
FIGURE 8.2 PUBLIC X.25 NETWORK EXAMPLE
X.25
A Cyclades Router can act either as a DTE (Data-terminal Equipment) connected to a public X.25 network or as
a DTE or DCE (Data circuit-terminating Equipment) as part of a private X.25 network. The first case is discussed
in this chapter. The second case is described in the CyROS Reference Guide. Both Permanent Virtual Circuits
(PVCs) and Switched Virtual Circuits (SVCs) can be defined. A PVC requires that two DTEs be permanently
connected.