Cisco Systems ONS 15200 manual Dual-Home Configuration, Multichannel Point-to-Point Configuration

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Chapter 2 Product Configurations

ONS 15200 Network Configurations

2.1.3 Dual-Home Configuration

In the dual-home configuration, a pair of ONS 15201 SCUs share the total data traffic load between two different fiber-optic cable (fiber) routes. The pair of ONS 15201 SCUs can use identical or different wavelength channels to communicate with their respective ONS 15252 MCUs. Using identical wavelength channels conserves network resources. In addition to load sharing, the dual-home configuration provides traffic protection in the electronic client-layer domain. If one fiber route is lost, the data traffic shifts to the other fiber route in the client layer.

In addition to protecting traffic at the client layer, the dual-home configuration protects the ONS 15200 system against single MCU or SCU failures. Figure 2-3illustrates the ONS 15200 dual-home configuration.

Note The physical connection in Figure 2-3consists of two fiber-optic cables.

Figure 2-3 Dual-home configuration

CLIENT

CLIENT

PHYSICAL
CONNECTION
	ONS 15252		ONS 15252
	LOGICAL CONNECTIONS
ONS 15201				ONS 15201
	ONS 15201(TWO)
ONS 15201	ONS 15201	ONS 15201	ONS 15201	ONS 15201

CLIENT

LEGEND

ONS - Optical network system

54630

2.1.4 Multichannel Point-to-Point Configuration

In the ONS 15200 multichannel, point-to-point configuration, multiple wavelength channels exist between a pair of ONS 15252 MCUs. You can set up the multichannel point-to-point configuration with or without optical-layer protection. Configuring optical-layer protection requires dual fiber routes.

In the ONS 15200 multichannel, point-to-point configurations, dual fiber routes send information along two separate fiber routes. The dual physical route configuration supports SONET or SDH add/drop multiplexer (ADM) protection and client-layer 1+1 APS protection.

Cisco does not recommend implementing layer-3 load-sharing protection in a multichannel point-to-point configuration because the two network fiber routes need to share an ONS 15252 MCU, and any failure of the ONS 15252 MCU would cause both routes to disappear simultaneously. Figure 2-4illustrates the ONS 15200 multichannel, point-to-point configurations.

Cisco ONS 15200 Product Description

	78-13766-01	2-3

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Contents Corporate Headquarters Cisco ONS 15200 Product DescriptionCisco 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 Related Documentation Manual StructureWorld Wide Web Relevant StandardsObtaining Documentation Obtaining Technical Assistance Optical Networking Product Documentation CD-ROMOrdering Documentation Documentation FeedbackTechnical Assistance Center Cisco.comCisco TAC Escalation Center Xvi Unprotected Channels Optical System DescriptionOptical Channels Unprotected channels in an ONS 15200 system Protected ChannelsOptically-fiber protected channels in an ONS 15200 system Software Configurable ProtectionPage Bus Configuration ONS 15200 Network ConfigurationsLogical Connections Ring ConfigurationMultichannel Point-to-Point Configuration Dual-Home ConfigurationRing Configuration with Hubbed and Meshed Traffic Ring configuration with hubbed and meshed traffic Full-Mesh ConfigurationNetwork Protection Four ONS 15252 MCUs in a full-mesh configurationONS 15252 MCU Modularity and Ancillary EquipmentClip ONS 15201 SCU Status Cause Power Distribution PanelFan Unit Fiber Organizer ONS 15252 MCU Physical ConfigurationPhysical Layout Configuration of the ONS 15252 Multichannel Unit Internal BUS Clip NAM Clip NCB HFM ONS 15201 SCU Physical ConfigurationPhysical layout of the ONS 15201 SCU Power and GroundingONS ONS 15252 MCU Power and GroundingElectromagnetic Compatibility Safety SpecificationsEnvironmental Compliance Channel Number Frequency THz Wavelength nm Product SafetyWavelength Grid Page Network Management Overview Network ControlCisco ONS 15200 Product Description 78-13766-01 Hardware Platforms EIA/TIA-232 RS-232 InterfaceSpeed Kbps Data Bits Parity None Stop Bits Flow Control Parameter ValueEthernet interface Command Line InterfaceMA interface Maintenance ManagerInternal Data Bus Web-Based InterfaceONS 15252 MCU internal data bus extension ports Cisco Transport Manager AlarmsSimple Network Management Protocol Interface Condition Name Definition Alarm NameAlarm Name Definition Page Client Layer Interface Port Module OverviewMaximum Equipment Version CLIPs Restriction TemperatureCommunication Interface Module ONSStatus Network Adaptation ModuleNetwork Control Board Module Connection Module Y Bridge ModuleCollector Filter Module Connection ModuleTermination Module Hub Filter ModuleLine Module Page Parameter Condition Maximum OperationalParameter Condition Minimum Unit OpticalOptical Performance Optical FrequenciesOptical Loss Includes Connectors Equipment Maximum dBEquipment Maximum dB Includes15201 SCU unprotected optical path 100/0 or 0/100 Parameter Condition Min Max Unit EnvironmentalParameter Units MechanicalParameter Max Unit ElectricalAcronyms 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