Nortel Networks NTRN10AN, 3500 manual Dwdm configurations, Hubbed-ring configuration

2-50Operation, administration, and maintenance (OAM) features

DWDM configurations

The following OMX configurations are supported:

•hubbed-ring

•a meshed-ring

•linear point-to-point

Hubbed-ring configuration

The hubbed-ring configuration is optimized for traffic flows that are characteristic of access networks. For an example of a hubbed-ring configuration, see Figure 2-24and Figure 2-25.

Each OPTera Metro 3500 shelf can support one fully protected optical channel between the OADM shelf and the terminal, or two unprotected channels. More than one OPTera Metro 3500 shelf can be installed at an OADM site to provide additional add/drop capacity as required.

Multiple OPTera Metro 3500 shelves are installed at the terminal, one for each OADM shelf in the hubbed ring. Four wavelengths are grouped into one band. The same wavelength band is assigned to the terminal shelf and the corresponding OADM shelf.

Figure 2-24

Physical connections in a hubbed-ring configuration

EX0812t

Terminal site

OMX OMX OMX

1 2 3

OADM site

OADM site

OMX

OMX

1

3

OMX

2

OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004