
Configuring WAN Line Services
2-16
117345-B Rev. 00
Specifying Point-to-Point Addresses
One end of a point-to-point circuit is designated as data communications
equipment (DCE) and is assigned an address of 01; the other end of the circuit is
designated as 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, for multiple
communication channels enabled by a common satellite link. As illustrated in
Figure 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