Cisco Systems AS5800 manual Slot Ownership Arbitration, Hub Redundancy, TDM Resource Allocation

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Cisco 5814 Dial Shelf

The first time a router shelf sends an inventory response to the DSC, it includes a flag indicating that all dial shelf cards should be reloaded. In split mode, the final dial shelf card image is downloaded by each DSC from the router shelf that owns it.

Slot Ownership Arbitration

The DSCs communicate between themselves to determine which one is to be active, where “being active” implies being the master for all the dial shelf card slots. In split mode, each DSC is the master for the set of dial shelf cards in the slots owned by its connected router. Additional messages indicate when DSCs are in split mode and what set of slots they control.

A DSC that is already in split mode simply advertises that it is in split mode and which slots it is claiming. When a second DSC receives an indication that the first DSC is in split mode, its behavior depends on the current configuration of its attached router.

•If the attached router is not configured for split mode, the second DSC sends error messages to its connected router and indicates its router’s state to the first DSC. The first DSC issues the same error messages to its router.

•If one attached router is configured in split mode and the other is in normal mode, the router that is in normal mode stops claiming ownership of any slots and does not respond to boot requests from any of the dial shelf cards. The router that is in split mode responds to boot requests only from dial shelf cards in the slots that it owns. However, it does not take over (restart) the dial shelf cards in its slots until the normal mode router is removed or is also configured in split mode.

Hub Redundancy

In normal mode, both DSCs are connected to the same router shelf. The active DSC monitors the status of its link to the router shelf and, in the event of link failure, requests the other DSC to take over. When operating in split mode, each DSC is connected to a different router shelf, so the DSCs do not send or respond to link failure messages. If one DSC’s link fails, the other DSC cannot transparently take over.

TDM Resource Allocation

Trunk cards and modem cards are tied together across a time-division multiplexing (TDM) bus on the dial shelf backplane. Time slots for the TDM bus are allocated by the router shelf on a call-by-call basis. This is implemented by initializing a queue at start up with one element for each usable time slot (currently 14*128 = 1,792 time slots are used). Time slots for a call are allocated from the front of the queue and replaced at the end of the queue when the call is completed. For split dial shelf operation, time slots are added to the queue dynamically, as they are needed. When a TDM slot is required and the queue is empty, a chunk of TDM slots is allocated to the queue.

In normal mode, the router shelf connected to the DSC in slot 12 allocates time slots starting from 0 going up, and the router shelf connected to the DSC in slot 13 allocates time slots starting from 1,791 going down. For split dial shelf operation each router is assigned half of the usable set of time slots. The router shelf connected to the DSC in slot 12 controls the first half of the time slots (0 to 895). The router shelf connected to the DSC in slot 13 controls the second half of the time slots (896 to 1791).

Cisco AS5800 Product Overview 1-11

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Contents Corporate Headquarters Page Chapter Cisco AS5800 Product Overview About This GuideChapter Installing the Cisco AS5800 Chapter Preparing for InstallationChapter Hardware Troubleshooting Index Appendix a Cisco AS5800 SpecificationsAudience Document ObjectivesDocument Conventions Document OrganizationDocument Organization Safety Warnings Terms and Acronyms Terms and AcronymsRelated Documentation Read Me First If You Need More Information Cisco Connection Online Cisco Connection OnlineCisco AS5800 Product Overview System Components System ComponentsCisco AS5800-Front View Cisco AS5800-Rear View Cisco AS5800 with Enhanced AC-Input Power Shelf-Front View Cisco AS5800 with Enhanced AC-Input Power Shelf-Rear View Functional Overview Functional OverviewCisco 5814 Dial Shelf Cisco 5814 Dial ShelfAS5800 Series Clock ManagementDial Shelf OIR Events Dial Shelf Card BootupHub Redundancy Slot Ownership ArbitrationTDM Resource Allocation Environmental Monitoring Dial Shelf Field-Replaceable UnitsDial Shelf Field-Replaceable Units Dial Shelf Field Replaceable UnitsDial Shelf Backplane Dial Shelf BackplaneCisco 5814 Dial Shelf Backplane-Rear View Dial Shelf Blower Assembly Dial Shelf Blower AssemblyPower LED Memory Type Size Quantity Product Number Dial Shelf Controller Card9shows the dial shelf controller card components LED Indicators and Alarm Buttons 11shows the dial shelf controller card front panel LEDs Dial Shelf Controller Front Panel LEDs and LCDs LED Indicator Display DescriptionButton Description Dial Shelf Controller Card Pushbuttons13 Dial Shelf Controller Card Ports Common Logic Interface Dial Shelf DC-Input Power SupplyConnector Pin Definitions Description Dial Shelf DC-Input Power SupplyDC-input Power Supply Circuits Circuit Description14 Power-Entry Modules-Dial Shelf Rear View Dial Shelf Filter Module Dial Shelf Filter Module15 Filter Module-Dial Shelf Rear View Enhanced AC-Input Power Shelf Enhanced AC-Input Power Shelf17 Cisco AS5800 Enhanced AC-Input Power Shelf-Rear View Power Supply Safety Features Enhanced AC-Input Power ShelfEnhanced AC-Input Power Supply LEDs Enhanced Power Shelf LED IndicatorsColor Description Cisco 7206 Router Shelf Cisco 7206 Router ShelfNetwork Interfaces 20 Port Adapter Slot Numbering Power SuppliesMidplane Network Processing EngineField-Replaceable Units Rack-Mount KitDial Shelf Interconnect Port Adapter LED IndicatorsDial Shelf Interconnect Port Adapter Software and Hardware Requirements Split Dial ShelvesSplit Dial Shelves AC-Input Power Shelf Power RequirementsPower Requirements Standard AC-Input Power Supply LEDs Standard AC-Input Power Shelf LED IndicatorsAC-Input Power Specifications DC-Input Power SpecificationsDC-Input Power Specifications 26 Cisco AS5800 Enhanced AC-Input Power Shelf-Front View Online Insertion and Removal Online Insertion and RemovalOnline Insertion and Removal Site Requirements AC and DC PowerVAC 15A Site Requirements AC Power PlanningCisco 5814 Dial Shelf AC and DC Power DC Power PlanningLifting Safety Lifting SafetyCisco 7206 Router Shelf Required Tools and Equipment Required Tools and EquipmentPreparing the Dial Shelf for Rack-Mount Removing the Blower AssemblyPreparing the Dial Shelf for Rack-Mount Captive screws Removing the Blower AssemblyRemoving and Replacing a PEM Removing the DC Power-Entry ModulesRemoving Dial Shelf Cards and Dial Shelf Controller Cards Removing Dial Shelf Cards and Dial Shelf Controller CardsH11040 Installing the Rack-Mount Brackets on the Chassis Installing the Rack-Mount Brackets on the ChassisRear Front Distance Limitations and Interface Specifications Plant WiringPlant Wiring Interference ConsiderationsSafety Recommendations Safety RecommendationsMaintaining Safety with Electricity Maintaining Safety with ElectricityPreventing Electrostatic Discharge Damage Rack-Mounting ConsiderationsRack-Mounting Considerations Typical 19-Inch Equipment Rack Posts and Mounting Strips Rack-Mounting Considerations Cisco 5814 Footprint and Outer Dimensions Preventive Site Configuration Maintaining Normal Operation Site SpecificationsConnecting to an AC Power Source Installing the Cisco AS5800Connecting to an AC Power Source Mount the Cables on the AC Power SupplyParts Required Installing the Power Shelf in the Rack Installing the Power Shelf in the RackRemoving and Replacing a Power Supply Removing and Replacing an Enhanced Shelf Power Supply Installing the AC-Input Power Shelf in a 4-Post Rack Installing the Dial Shelf in the RackMounting Support Brackets for the Cisco AS5800 Installing the Dial Shelf in the RackMounting the Rear Brackets Telco Rack- Rear Bracket InstallationPost Rack- Rear Bracket Installation Replacing the Dial Shelf Components Replacing the Dial Shelf ComponentsReplacing the Blower Assembly Replacing a PEM Replacing the Power-Entry ModulesInstalling the Cisco AS5800 10 Using the Ejector Levers Connecting the AC Power Cables Connecting Cables to the Dial ShelfGrounding the AC-Input Power Shelf to the Dial Shelf Connecting Cables to the Dial Shelf11 Attaching the Ground Wire to a Standard Power Shelf Connecting the AC Power Cables Connecting the DC Power Cables13 Connecting the DC-Interconnect Cables Connecting the Monitor Cable14 Connecting the Monitor Cable 15 Connecting the Monitor Cable to an Enhanced Power Shelf Connecting the AC Power Cords16 Connecting the AC Power Cords to a Standard Power Shelf Installing the Safety Cover on the Standard Power Shelf18 Installing the Safety Cover to a Standard Power Shelf Connecting to a DC Power Source Connecting to a DC Power SourceGrounding the Dial Shelf 19 Cisco AS5800-Rear View Connecting DC Power CablesRack-Mounting the Router Shelf Rack-Mounting the Router ShelfConnecting the Dial Shelf to the Router Shelf Connecting the Dial Shelf to the Router ShelfConnecting the Dial Shelf to the Router Shelf Connecting Router Shelf Port Adapter Cables Connecting Router Shelf Port Adapter CablesConnecting Trunk Card Cables Connecting Trunk Card Cables24 Connecting the CT1 and CE1 Trunk Card RJ-45 Cables Connecting to the Router Shelf Console and Auxiliary Ports Connecting to the Router Shelf Console and Auxiliary PortsConnecting to the Router Shelf Console and Auxiliary Ports AC-Input Power Shelf-Front View Powering On the Cisco AS5800PEM power switches Observing Access Server LEDs Observing Access Server LEDsDial Shelf Card LEDs Nominal LED ReadingsAS 5800 Nominal LED Readings Component Color/ConditionObserving Power-Entry Module LEDs Observing Power-Entry Module LEDsDial Shelf Controller Card Front Panel LEDs Observing Dial Shelf Controller Card LEDsPower and Warning LEDs Blower Assembly Front Panel LEDs Blower Assembly LEDsStarting the Cisco Starting the Cisco Observing Router Shelf Port Adapter LEDsViewing Your System Configuration Viewing Your System ConfigurationEnter enable mode 5800#sh dial-shelf Where to Go Next Where to Go NextWhere to Go Next Hardware Troubleshooting Problem Solving with Subsystems Problem Solving with SubsystemsProblem Solving with Subsystems-Cisco 7206 Router Problem Solving with Subsystems- Cisco 7206 RouterIdentifying Startup Problems Identifying Startup ProblemsStarting Up the Cisco 7206 Router Shelf Starting Up the Cisco 7206 Router ShelfStarting Up the Cisco 5814 Dial Shelf Troubleshooting the Router InstallationTroubleshooting the Power Subsystems Troubleshooting the Power SubsystemsDial Shelf Power Subsystem Router Shelf Power SubsystemTroubleshooting the Cooling Subsystems Troubleshooting the Cooling SubsystemsRouter Shelf Cooling Subsystem Dial Shelf Cooling Subsystem Troubleshooting the Router Shelf Processor Subsystem Troubleshooting the Processor SubsystemsTroubleshooting the I/O Controller Card Troubleshooting the Processor SubsystemsTroubleshooting the Port Adapters Troubleshooting the Network Processor CardTroubleshooting the Dial Shelf Interconnect Port Adapter Troubleshooting the Dial Shelf Controller Card Troubleshooting the Dial Shelf Processor SubsystemTroubleshooting the Dial Shelf Processor Subsystem Troubleshooting the Dial Shelf Cards Troubleshooting Network InterfacesTroubleshooting Network Interfaces Table A-1 Cisco 5814 Dial Shelf Specifications Description System SpecificationsMB Dram System Specifications Backplane SpecificationsTable A-4 Backplane-Environmental Specifications Description Blower Assembly SpecificationsAustel Dial Shelf Controller Card SpecificationsDC PEM Specifications Filter Module Specifications Filter Module SpecificationsPage Table A-12 AC-Input Power Supply-Specifications Description AC Power Module SpecificationsESD Enhanced Power Supply SpecificationsCisco AS5800 Specifications A-11 AC-Input Power Shelf Cables Cabling SpecificationsCabling Specifications Dial Shelf Interconnect Port Adapter CablesFigure A-3 DC Interconnect Cables AC-Input Power Shelf CablesFigure A-4 Monitor Cable Industry-Standard Wiring Plans Red Brown Slate Black Blue Orange Green Yellow Violet Industry-Standard Wiring Plans B-3 Page Cisco 5814 Dial Shelf Packaging Replacement Instructions Figure C-1 Cisco 5814 Packaging Detail Required Tools and Parts Powering Off the Cisco AS5800Required Tools and Parts Figure C-3 Dial Shelf Power Switches on the Pems Figure C-2 Router Shelf Power SwitchesDisconnect the DC power cables from your DC power source Figure C-6 Filter Module Monitor Cable DB-9 Connector Repackaging the Cisco 5814 Dial Shelf Preparing to Repackage the Cisco 5814 Dial ShelfPreparing to Repackage the Cisco 5814 Dial Shelf Repackaging the Cisco 5814 Dial Shelf D E 4-2 Startup Locating problem Router shelf Cooling subsystem Index
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AS5800 specifications

Cisco Systems has long been a leader in the networking and telecommunications field, and its AS5800 series of routers exemplify this tradition. The AS5800, along with the AS5850, AS5350, AS5400, and AS5300, provides robust solutions for service providers and enterprise-level networking applications. Each of these models has distinct features and characteristics that cater to the evolving demands of internet traffic and data processing.

The Cisco AS5800 is designed for high-capacity routing and optimized for broadband services. It supports a wide range of services, including voice, data, and video applications, making it a versatile option for service providers looking to deliver integrated solutions. It is equipped with advanced quality of service (QoS) features that ensure bandwidth is allocated effectively, holding strong even under heavy traffic conditions.

In comparison, the AS5850 offers superior processing capabilities and is typically utilized in larger-scale implementations. This model supports high-density interfaces, allowing numerous connections without compromising performance. Its architecture includes enhanced MPLS (Multiprotocol Label Switching) support, enabling more efficient traffic management and better utilization of network resources.

The AS5350 is known for its scalability and energy efficiency, ideal for voice-over-IP (VoIP) and media gateway applications. It supports various telephony features, such as protocol interworking and transcoding, making it a preferred choice for organizations focusing on digital voice technologies. The AS5300, while slightly older, continues to be a valuable asset for less demanding networks, offering reliable performance with VoIP capabilities and basic data applications.

The AS5400 bridges the gap between high-performance routing and operational efficiency. It incorporates Cisco's proprietary technologies to ensure seamless connectivity and robust failover systems. This model is highly regarded for its security features, protecting network integrity and providing peace of mind for businesses relying on sensitive data transfer.

Overall, Cisco’s AS5800 series showcases a progressive evolution of routing capabilities with enhanced features tailored for resilience, scalability, and performance. These routers not only address the technical needs of modern networks but also strategically position organizations for future growth in an increasingly digital world. Each model, with its unique attributes, continues to support the varied demands of global communication infrastructures.
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