Riverstone Networks RS 3000 User Manual

Riverstone Networks RS 3000/3100/3200 Switch Router Getting Started Guide 2-43
Introduction Hardware Features
2.4.7 CWDM GBICs
All Gigabit Ethernet ports on the RS can be configured for Coarse Wavelength Division Multiplexing (CWDM)
through use of CWDM GBICs. CWDM allows a single fiber to carry up to eight separate wavelengths, enabling 8 full
duplex GigE links over a pair of fibers. Each wavelength is supported by a seperate GBIC that is tuned to that
wavelength. Mux/DeMux modules are used to aggregate up to eight different wavelengths for transmission onto a
single fiber. Add/ Drop modules are used to extract a single wavelength from a fiber. Figure 2-28 and Figure 2-29
describe two common applications for use of CWDM with the RS.
Figure 2-28 describes a CWDM point-to-point configuration. In this example, eight ports on each of two RS
Switch/Routers are configured with CWDM GBICs tuned to different wavelengths. Each of the eight GBICs are then
connected with two fibers, for full duplex connectivity, to a port configured for the same wavelength on a
MUX/DEMUX module. All of the eight wavelengths are multiplexed on a single fiber in each direction (two fibers for
full duplex connectivity). This fiber is then connected to a remote MUX/DEMUX module where it is demultiplexed
and routed to the GBIC with the corresponding wavelength.
Figure 2-28 CWDM Point to Point Configuration
1470 nm
1470 nm 1490 nm
1490 nm
1530 nm
1510 nm
1510 nm 1530 nm
1550 nm
1550 nm 1570 nm
1570 nm
1590 nm
1590 nm
1610 nm
1610 nm
MUX/DEMUX Module
WDM GBICs
MUX/DEMUX Module
1470 nm
WDM GBICs
1490 nm
1530 nm
1510 nm
1550 nm
1570 nm
1590 nm
1610 nm
1610 nm
1590 nm
1570 nm
1550 nm 1530 nm 1510 nm 1490 nm 1470 nm

Riverstone Networks RS 3000 Specifications

General

Brand	Riverstone Networks
Model	RS 3000
Category	Network Router
Language	English