Nortel Networks OPTera Metro 3500 - Manual (Page 89)

Operation, administration, and maintenance (OAM) features 2-51
Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Figure 2-25
Logical connections in a hubbed-ring configuration
EX0813t
Meshed-ring configuration
The meshed-ring configuration is optimized for traffic flows that are
characteristic of interoffice networks. For an example of a meshed-ring
configuration, see
Figure 2-26 and Figure 2-27 .
Individual wavelengths can be added or dropped at different locations. You can
also reuse wavelengths.
Band meshing and channel meshing are both supported.
Band meshing allows the system to drop and add all wavelengths of a given
band at one node or at multiple nodes in the network. Other bands can be
passed through the system.
Channel meshing provides the capability for any channel from one node in the
network to be terminated (added or dropped) at any other node in the network
and at multiple nodes in the network.
Each OPTera Metro 3500 shelf can support one fully protected optical channel
or two unprotected channels. More than one OPTera Metro 3500 shelf can be
installed at a terminal or OADM site to provide additional add/drop capacity
as required.
3
OADM
Terminal
1 2 3
1
2
OADM
3500
3500 3500 3500
3500
3500