Cisco Systems manual Protected Channels, Unprotected channels in an ONS 15200 system

Page 18

Chapter 1 Product Technology

Optical Channels

potentially conflicting protection schemes. You can add protection in the client layer described in the “Physical Layout” section on page 3-5. Figure 1-1displays an example of ONS 15200 unprotected channels.

Figure 1-1 Unprotected channels in an ONS 15200 system

CLIENT IN CLIENT OUT

CLIENT OUT CLIENT IN

ONS 15200

LEGEND

ONS - Optical network system

54647

1.2.2 Protected Channels

In optically-protected channels, data traffic flows in two physically separated streams to the receiving node. The configuration of the receiving node determines which traffic flow is transferred to the client layer of the receiving node. Figure 1-2displays an example of optical fiber-protected channels in an ONS 15200 system. This form of optical channel protection is rapid and provides continued system coverage in case of fiber breaks between nodes.

Cisco ONS 15200 Product Description

1-2	78-13766-01

Image 18

Contents Cisco ONS 15200 Product Description Corporate HeadquartersCisco ONS 15200 Product Description N T E N T S Alarms Acronyms A-1 Contents Cisco ONS 15200 Product Description 78-13766-01 G U R E S Viii NCB Indicators Tables Cisco ONS 15200 Product Description 78-13766-01 Manual Structure Related DocumentationRelevant Standards Obtaining DocumentationWorld Wide Web Documentation Feedback Optical Networking Product Documentation CD-ROMOrdering Documentation Obtaining Technical AssistanceCisco.com Technical Assistance CenterCisco TAC Escalation Center Xvi Optical System Description Optical ChannelsUnprotected Channels Protected Channels Unprotected channels in an ONS 15200 systemSoftware Configurable Protection Optically-fiber protected channels in an ONS 15200 systemPage ONS 15200 Network Configurations Bus ConfigurationRing Configuration Logical ConnectionsDual-Home Configuration Multichannel Point-to-Point ConfigurationRing Configuration with Hubbed and Meshed Traffic Full-Mesh Configuration Ring configuration with hubbed and meshed trafficFour ONS 15252 MCUs in a full-mesh configuration Network ProtectionModularity and Ancillary Equipment ONS 15252 MCUClip ONS 15201 SCU Power Distribution Panel Fan UnitStatus Cause ONS 15252 MCU Physical Configuration Physical LayoutFiber Organizer Configuration of the ONS 15252 Multichannel Unit ONS 15201 SCU Physical Configuration Internal BUS Clip NAM Clip NCB HFMPower and Grounding Physical layout of the ONS 15201 SCUONS 15252 MCU Power and Grounding ONSSafety Specifications Environmental ComplianceElectromagnetic Compatibility Product Safety Wavelength GridChannel Number Frequency THz Wavelength nm Page Network Control Network Management OverviewCisco ONS 15200 Product Description 78-13766-01 EIA/TIA-232 RS-232 Interface Hardware PlatformsParameter Value Speed Kbps Data Bits Parity None Stop Bits Flow ControlCommand Line Interface Ethernet interfaceMaintenance Manager MA interfaceWeb-Based Interface Internal Data BusONS 15252 MCU internal data bus extension ports Alarms Simple Network Management Protocol InterfaceCisco Transport Manager Alarm Name Condition Name DefinitionAlarm Name Definition Page Overview Client Layer Interface Port ModuleONS Equipment Version CLIPs Restriction TemperatureCommunication Interface Module MaximumNetwork Adaptation Module Network Control Board ModuleStatus Connection Module Bridge ModuleCollector Filter Module Connection Module YHub Filter Module Line ModuleTermination Module Page Operational Parameter Condition MaximumOptical Frequencies OpticalOptical Performance Parameter Condition Minimum UnitIncludes Connectors Equipment Maximum dB Optical LossIncludes Equipment Maximum dB15201 SCU unprotected optical path 100/0 or 0/100 Environmental Parameter Condition Min Max UnitMechanical Parameter UnitsElectrical Parameter Max UnitAcronyms Control area network Electronic Industries Association International Electrotechnical Commission Internet protocol National Fire Protection Association Subnetwork Manager D E IN-2 IN-3 IN-4