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This chapter provides descriptions and specifications for the Cisco ONS 15200 modules, sometimes referred to as a card or blade. For detailed information about each module, consult the Cisco ONS 15200 Module Handbook.
The ONS 15200 has six modules, four active and two passive. The following paragraphs describe the four active modules in the ONS 15200 system:
The following paragraphs describe the passive modules in the ONS 15200 system:
The CLIP module provides the input port from the client layer to the integrated ONS 15200 system, and the output port from the integrated ONS 15200 to the client layer. The CLIP module receives an optical input signal from the client layer in either the 1310-nm or the 1550-nm wavelength region and converts the optical signal to a specific International Telecommunication Union (ITU-T) G.692-compatible wavelength. The CLIP module then transfers the converted optical signal to the DWDM side of the ONS 15200 or ONS 15216 network.
When the CLIP module receives the optical signal from the DWDM side of the ONS 15200 network, the CLIP module converts the selected optical signal to the 1310-nm wavelength region and delivers it to the client layer. If the ONS 15200 system is optically protected (that is, the optical signal is carried on two routes), the CLIP module selects which optical signal to transfer to the client layer. You can install a CLIP module in either the ONS 15252 MCU or the ONS 15201 SCU.
When the CLIP modules are not installed in the MCU, attach front covers for electromagnetic compatibility and electromagnetic interference (EMC/EMI) precautions.
ONS 15200 Release 2.0 provides a new long range CLIP module that incorporates both clocked (3R) and unclocked (2R) data regeneration with 1800 ps/nm dispersion tolerance at +7 dBm output power. You can set the mode of operation (2R or 3R) using the management interfaces. The new 2R/3R CLIP is fully compatible with the existing 3R CLIP. The 2R/3R CLIP is user configurable for unprotected or fiber protected operation and requires a NEBS 3 shelf.
The Release 2.0 CLIPs work in the 100-GHz and 200-GHz ITU grids corresponding to the ONS 15216 system.
In addition, Release 2.0 provides two dispersion tolerances: 1800 ps/nm at 7 dBm, and 3000 ps/nm at 0 dBm.
The CIM allows you to extend the ONS 15252 MCU internal CAN bus to another ONS 15252 MCU or to an ONS 15201 SCU. Extending the CAN bus allows you to configure several network elements (NEs) into a larger functional unit. The CIM also provides the local craft interface to the Maintenance Manager software package, and the EIA/TIA-232 access interface to the ONS 15252 MCU via an EIA/TIA-232 cable. The CIM is installed in the ONS 15252 MCU. The CIM and the NCB module communicate using ONS 15252 MCU backplane.
The NAM splits the outgoing optical signal from the CLIP module (one of the DWDM wavelengths or channels). The NAM splitting ratio can be 100/0, 50/50 or 0/100 (depending on the connection). Unprotected channels use the splitting ratios 100/0 (and 0/100). Protected channels use the splitting ratios 50/50.
The NAM transfers the signal to the ONS 15216 OADM (1, 2 or 4 protected channels) or to the ONS 15216 MUX/DEMUX (up to 32 protected or unprotected channels depending on which configuration is installed).
The optical signals from the DWDM side go directly from the ONS 15216 MUX/DEMUX to the ONS 15200 system and back. The NAMs then transfer these incoming and outgoing optical signals to and from the CLIP modules. The NAM also shows the visual alarm indications associated with the CLIP.
The NCB module is the hardware platform for the Subnetwork Manager (SNM) software package, which you access using the Ethernet connector on the front of the NCB module or from the EIA/TIA-232 interface on the CIM module. The NCB supervises, administers, and monitors the ONS 15200. In addition to controlling all of the ONS 15200 system CLIP modules, the NCB module collects information about system status, alarms, parameters, and actions on the internal data bus. You can also store performance monitoring data on the NCB and upload the data to external media.
ONS 15200 Release 1.1 and later supports multiple NCBs on the CAN bus; however, you can only configure two active NCBs to be the managers of any CLIP in a network. Any NCB in a network that is not provisioned as an active manager of a CLIP can still inventory the CLIP.
In addition to alarm lines on the internal data bus, the NCB has three dedicated LEDs. When lit, the LEDs indicate the status shown in Table 5-1.
| LED | Status |
|---|---|
Red | Critical or major alarm |
Amber | Minor alarm or warning |
Green | Power on |
The ONS 15200 system can function without the NCB module. When you choose not to use an NCB module, mount a front cover in its place for EMC/EMI precautions. The front cover used in place of the NCB module is narrower than the front cover used in place of the CLIP module. Do not interchange the two types of front covers.
The CSM is installed in the ONS 15201 SCU. The CSM splits the outgoing optical signal from the CLIP module (one of the DWDM wavelengths or channels). The CSM splitting ratio can be 100/0, 50/50 or 0/100 (depending on the connection). Unprotected channels use the splitting ratios 100/0 (and 0/100). Protected channels use the splitting ratio 50/50.
The CSM transfers the signal to the ONS 15216 OADM (1, 2 or 4 protected channels)
The optical signals from the DWDM side goes directly from the ONS 15216 OADM to the ONS 15201 system and back. The CSM then transfers these incoming and outgoing optical signals to and from the CLIP modules. The ONS 15201 SCUs show the visual alarm indications associated with the CLIP.
The DNAM replaces a NAM when a NAM is not installed.
Posted: Mon Sep 30 23:14:21 PDT 2002
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