Alcatel-Lucent 9500 MXC User Manual page 177

Point-to-Point Traffic Overlay on a Ring
Ring-Node Intersection
3DB 23063 ADAA - Rev 004 July 2007
Point-to point overlay operation is illustrated in Figure 3-50. The additional
capacity needed for overlay is required only on the overlaid links. Overlaid
traffic is not ring protected.
Example of a Ring Network with Point-to-Point Traffic Overlay
Figure 3-50.
Node A
Node G
32xE1 links:
64xE1 links:
Node F
Node E
Point-to-point
E1 circuits
In this example the links between nodes C, D and E are carrying 32xE1
point-to-point non-protected traffic as well as 32xE1 ring-protected traffic.
Using the INUe, two or three rings can intersect at one node.
Example of Intersecting Rings
Figure 3-51.
Ring A
32xE1 link
Node B
Protected ring
Point-to-point
64xE1 link
32xE1 ring-protected traffic
32xE1 pt-to-pt traffic
Node D
32xE1 ring
Common Node
Ring B
9500 MXC User Manual
Node C
64xE1 ring
Vol. II-3-83