
Configuring Synchronous Services
117021-A Rev. A 2-11
Specifying Point-to-Point Addresses
According to convention, one end of a point-to-point circuit is designated data
communications equipment (DCE) and is assigned an address of 01; the other end
of the circuit is designated data terminal equipment (DTE) and is assigned an
address of 03.
If you configure a device with a local address of 1 and remote address of 3, you
must configure the device at the other end of the point-to-point circuit with a local
address of 3 and remote address of 1.
Conventional DCE/DTE addressing is inadequate, however, in the case of
multiple communication channels enabled by a common satellite link. As
illustrated in F
igure 2-3, a common satellite relay link provides a virtual
point-to-point link between routers A and X, B and Y, and C and Z.
Figure 2-3. Satellite Broadcast (Sample Topology)
Note: The remote and local addresses must be 1 (DCE) or 3 (DTE) if you
configure X.25 on a line.
A
B
C
X
Y
Z
Virtual
circuits
LS0016A
Comentarios a estos manuales