Cisco Systems manual Preventive Maintenance, Troubleshooting the MGX 8220 Shelf

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C H A P T E R 8

Repair and Replacement

This chapter describes periodic maintenance procedures, troubleshooting procedures, and the replacement of major parts for the MGX 8220.

Caution For protection against shock hazard, verify both power cords are disconnected before servicing the unit.

Caution Vergewissern sie sich, däss beide Netzkäbel vom Gerät getrennt sind, bevor Sie mit den Wärtungsärbeiten beginnen.

Caution Pour iviten tout danger, dibrancher les deux cordons d’alimentation avant toute intervention de maintenance sur cet equipement.

Preventive Maintenance

Most monitoring and maintenance of the MGX 8220 shelf is done using the operating system software. Preventive maintenance of the MGX 8220 shelf hardware is minimal.

1.Periodically check the node supply voltage and internal cabinet temperature. The temperature should not exceed 50° C.

2.Periodically check the event log with the dsplog command.

3.Periodically check the network alarm status with the dspalms command.

4.Ensure that the cooling unit intake grills and the exhaust plenum are clear.

Troubleshooting the MGX 8220 Shelf

This section describes basic troubleshooting steps to be taken for some of the more obvious node failures. (See Table 8-1.) This is not an exhaustive set of procedures, and does not take into account any of the diagnostic or network tools available to troubleshoot the MGX 8220 shelf. See Chapter 5, “Service Configuration,” for information on commands and command usage.

 

 

Cisco MGX 8220 Installation and Configuration

 

 

 

 

 

 

 

Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003

 

 

8-1

 

 

 

 

 

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Contents Corporate Headquarters Cisco MGX 8220 Installation and ConfigurationPage FIC 04DU9-ISN Page Page Equipment Attachment Limitations Document Information General InformationMailing Information Business Reply Mail Overview Cisco WAN Switching Product Name ChangeAudience OrganizationCore Module Overview Power Entry OptionsDC Power Drain and Circuit Protection Spacer Unit Cooling Assembly PowerUpgrading Firmware Service ConfigurationIntroduction T1 BackcardsLMI Interface Clearing Any Alarms Related to ds3VPI/VCI Mapping Unpacking PowerVertical Positioning T1 Cabling E1 Cabling Dumb Terminal onto the Maintenance PortCabling for RJ-48 Connectors on T1 and E1 Ports A-5 Cabling SummaryFRSM-8E1 Specification Specifications B-1Virtual Circuits Service Interface T1/E1 Virtual Circuits Matm SpecificationUsing the Procedure Tables Finding the Right Procedure Introduction C-1Resetsys Upgrade/Downgrade Save/Restore SM Configuration Resetsys or clrallcnfCompatibility C-46 Clrallcnf C-47 G U R E S Xviii Figure A-1 Figures Cisco MGX 8220 Installation and Configuration B L E S Table A-9 Objectives Cisco WAN Switching Product Name ChangeAudience Chapter Title Description OrganizationConventions Related DocumentationWorld Wide Web Obtaining DocumentationDocumentation CD-ROM Cisco.com Obtaining Technical AssistanceOrdering Documentation Documentation FeedbackCisco TAC Web Site Technical Assistance CenterCisco TAC Escalation Center Xxx Cisco MGX 8220 System Overview New in ReleaseA P T E R Cisco BPX 8600 Series Switch Configuration ExamplesATM UNI/NNI Service InterfacesRemote Locations Standalone Cisco MGX 8220 Edge ConcentratorStandards-Based Conversion to ATM ScalabilityATM Local Management Interface Traffic ManagementCisco MGX 8220 Shelf Broadband Network Modules Frame Service ModulesCisco MGX 8220 Cards Cards Supported in the Cisco MGXATM UNI Service Modules Service Resource Modules Circuit Emulation Service ModulesInverse Multiplexing for ATM Trunk Modules Cisco MGX 8220 Management Release 5.0, Part Number 78-6430-03 Rev. D0, November Overview Common Equipment DescriptionCisco MGX 8220 Shelf Cisco MGX 8220 Backplane Front View of the Cisco MGX 8220 Shelf with Cards InstalledTypical Cisco MGX 8220 Hardware Weights Power Entry OptionsDC Powered Systems AC Power Assembly front without grill AC Powered SystemsDC Power Drain and Circuit Protection Cooling AssemblyCisco MGX 8220 Shelf Configuration Main Cooling AssemblySpacer Unit Booster Cooling AssemblyCooling Assembly Power Plenum Exhaust ChamberCisco MGX 8220 Cabinet Optional Cisco-Supplied CabinetCore Module Overview 10 Cisco MGX 8220 Top Level Block Diagram 11 ASC Cards Cisco MGX 8220 ASC Shelf ControllerEthernet Transceiver Extenders Console PortsType of LED Color Meaning of LED ASC LED IndicatorsAuto Card Restore Broadband Network ModulesBNM-T3/E3 ATM Trunk Interface 15 CC, FFCI, EFCI, Supv, PTI, and CLP Fields Push Buttons BNM-T3/E3 LED IndicatorsType of LED Color Meaning 16 BNM-155 Cards BNM-155SMF-155 Back Card ATM Trunk Interface Back CardBNM-155 LED Indicators AX-SRM-T1/E1 Features Service Resource Modules17 SRM-T1/E1 Card Rules for Installation of SRMs1N RED SRM-T1/E1 LED IndicatorsBert 18 AX-SRM-3T3 Cards Release 5.0, Part Number 78-6430-03 Rev. D0, November Functions of the User Interface Summary of User Interface ConnectionsProtocols Physical ConnectionsBNM Matrix of User Interface Combinations User Interface Access PortsMaintenance Port UI Function Physical Access Path TCP/IP Protocols UsedControl and LAN Ports Maintenance Port AccessControl Port Access LAN Port Access to the Cisco MGX 8220 Shelf In-Band AccessPrivilege Levels PasswordsUser Accounts and Privilege Levels AccountsFollowing prompt appears Connecting Using the Maintenance Port Login ProcedureConnecting a PC using the COM Port Connecting Using the Control PortConnecting a Terminal Server Connecting using an In-Band Connection Command-Line InterfaceConnecting using the LAN Port Establishing the Cisco MGX 8220 to Cisco BPX Connection Cisco MGX 8220 Management Through SnmpAxisSystem Structure of the MIBsCardGeneric CardSpecific AxisServicesAxisLines Upgrading Firmware Tftp User InterfaceTftp destIPadd ASC Frsm Ausm Cesm Frasm Imatm MIBConfiguring Statistics Configuring and Collecting StatisticsCollecting Statistics Statistics Collection File Format Configuration Save and RestoreField Description Field Size Restore Tftp Command Format Save Tftp Command FormatRelease 5.0, Part Number 78-6430-03 Rev. D0, November Introduction MGX 8220 Service ModulesFrsm Connection Types Frame Relay Service Modules FRSMsFrame-Relay-to ATM Network Interworking NIW BPX 8620 Network with Networking Interworking Connections Congestion IndicationPVC Status Management Frame-Relay-to ATM Service Interworking SIWCell Loss Priority and Congestion Indication Command/Response Mapping Loss Priority Indication Frame ForwardingFrame-based User-to-Network Interface Funi Translation and Transparent ModesFractional FRSMs FRSMs for T1 and E1 linesChannelized FRSMs Example of T1/E1 Frsm Front Cards FRSMs for High Speed Serial Lines AX-FRSM-HS1 and MGX-FRSM-HS1/B FeaturesExample FRSM-HS1 Front Card MGX-FRSM-HS2 FeaturesStun Connections Frame Relay Access Service ModuleBstun Connections Using Frasm for a Stun ConnectionFras Connections Using Frasm for a Bstun ConnectionUsing Frasm for a Fras BNN Connection Example Frasm Front Cards User Interface Frame Relay to ATM ConversionCell Loss Priority ATM UNI Service Module Ausm Cards Ausm LED Indicators AUSM-8T1/E1 Type of LED Color Description AUSM-8T1/E1 LED Indicators10 AUSM-8T1/E1 Front Card An illustration of the Imatm cards is provided in Figure Inverse Multiplexer for ATM Trunk ModuleSMB-E3E1 IMATM-8T1BNC IMATM-8E1Hsport Imatm LED IndicatorsCircuit Emulation Service Module 4-port Circuit Emulation Service Modules14 Cesm Card Standby LED Cesm 4-Port LED IndicatorsPort LED Active LEDAX-SMB-8E1-LM AX-R-SMB-8E1-LM Circuit Emulation Service Module 8-portT1/E1 Structured Data Transfer T1/E1 Unstructured Data Transfer15 8-Port Cesm Cards Cesm 8-Port LED Indicators DB15-4X.21-BC Service Module Back CardsT1 Backcards Back CardsRedundancy Back Cards Hssi Back CardsT1/E1 Backcards 17 T1/E1 Redundancy Back Cards Release 5.0, Part Number 78-6430-03 Rev. D0, November Via Cisco WAN Manager Setting up a Frame Relay ConnectionFrsm Network Interworking Connections Via the Command-Line InterfaceFrame Relay Connection through an MGX 8220 and BPX Network Establish the Customer Equipment to BPX SegmentsEstablish the BPX-to-BPX Segment MCR Frsm Service Interworking ConnectionsFuni and Frame Forwarding Parameter DescriptionATM to-ATM Connection Screen Ausm ConnectionsBPX-to BPX-Segment Cesm ConnectionsFrasm Connections Fras BNN Connections Stun Connections Ffffffff Bstun Connections Chapter Frasm Connections Sample Display Configuring Imatm ConnectionsDownload procedure Adding the LineClearing Any Alarms Related to ds3 Checking the Alarms on a ds1 LineLineNum LineAlarmState Sample Output Plcp Configuration for ds3Example Configuring the Clock SourceEND a END B Stratum 1/2 Addchrte Commands Related to AIM GroupConfigure the AIM Group Add the Channel Route EntryUNI Display the AIM GroupSample Data Configuring the Port QueueDspportcnt Aimgrp no Display the Port CountersRelease 5.0, Part Number 78-6430-03 Rev. D0, November MGX 8220 in Stand-alone Applications Using the Command-Line InterfaceOut-of-Band Access Configuring the BNMLMI Interface VPI/VCI Mapping Setting Trap ManagersUNI NNI VC ConnectionsVP Connections Interface TypeProvisioning Ausm Channels Provisioning Frsm ChannelsChapter Provisioning Ausm Channels Safety Recommendations Installation and Start-UpGrounding Maintaining Safety with ElectricitySite Preparation PowerRack Space Cooling UnpackingRack-Mounting the MGX 8220 Units Parts ChecklistUnpacking Each Container Vertical Positioning Horizontal PositioningRack-Mounted MGX 8220-One- and Two-Shelf Configurations Cooling Configuration Guidelines17.750 Minimum Plenum or spacer Or 2 U Use the Angle Bracket to Secure the Module to the Rack Rack-Mounting the ModulesCenter Mount Limited AccessMounting the Electrostatic Wrist Strap Rack-Mounting the Plenum or SpacerElectrostatic Wrist Strap Kit Colocating Cisco Units in the Same RackDC Power to the Shelf Connecting Power for DC Systems10 PEM Cable Clamp 11 DC Power Cabling for One-Shelf and Two-Shelf Racks DC Power to the Fan Cooling Assembly12 DC Cabling for Three-Shelf and Four-Shelf Racks Monitoring Power Supply Status Connecting Power for AC SystemsAC Input Power Available Power13 AC Power Assembly Block Diagram 14 AC Cabling for One-Shelf and Two-Shelf Racks 15 AC Cabling for Three-Shelf and Four-Shelf Racks Plenum Chamber Kit Cable ManagementDescription Quantity 16 Cable Management Kit on the Plenum Chamber Main Cooling and Booster Cooling KitCable support, attach with 10-32 thread forming screws Cable Routing Power Cable RoutingRouting Data Cables 19 Routing Power Cables at the Cooling AssemblyReadying the Cards Removing and Installing the Front CardsRemoving and Installing the Back Cards Making the BNM Trunk Connection 22 Connecting BNM-T3 or BMN-E3 Cables23 Cabling for Redundant BNM Cards Making the Service Interface ConnectionsAttaching a Control Console Alarm Output ConnectionDumb Terminal onto the Maintenance Port Making External Clock ConnectionsInitial Start-Up of the MGX 8220 Shelf Initial ConfigurationStep Troubleshooting the MGX 8220 Shelf Preventive MaintenanceSymptom Probable Cause Remedy General Troubleshooting ProceduresASC Fail LED Dspcds Procedure for All ErrorsDsplog slot# slot# day offset Displayed Log Message FormatLog Code Range Module Logging Messages Error Number Display Log String Detail DescriptionLog Codes ASC Log CodesError Number Display Log String Detail Description Null Error Number Display Log String Detail Description Error Number Display Log String Detail Description Error BNM Log Codes Error Number Display Log String Detail Description Fwready = SRM Log Codes Bram Ausm Log Codes PDU Error Number Display Log String Detail Description Error Number Display Log String Detail Description Replacing Parts Replacing a Back Card Replacing a Front CardReplacing a DC Power Entry Module Chapter Replacing Parts Release 5.0, Part Number 78-6430-03 Rev. D0, November Connector Description Imatm T1/E1 ConnectorsT3 Trunk Cabling Pin No Description Frame Relay CablingT1 Cabling Cable Parameter DescriptionDB-15 Connector BNC ConnectorE1 Cabling DTE Port ConnectorsHssi Port Connectors Pin No Name Signal Function Polarity Signal SourceCabling for RJ-48 Connectors on T1 and E1 Ports Figure A-2 RJ-48 Connectors DC Power CablingPin No Name Source Description AC Power CablingMaintenance and Control Ports Control and Clock CablingDTR DTE Modem CableExternal Clock Input Cabling DSR DCEE1 Clock Cabling T1/E1 Clock CablingPin No. Description Pin No Alarm Description External Alarm CablingCable Used On Standard MGX 8220 CablesRedundancy Y-Cables Model No Description UsageRelease 5.0, Part Number 78-6430-03 Rev. D0, November Intershelf Link BNM-T3 SpecificationBNM-T3 Plcp Card GeneralLCV, LES, %EFS, LSES, SEFS, PCV, PES, PSES, SEFS, UAS BNM-E3 SpecificationCcitt Card General SMF Specific Specifications BNM-155 SpecificationsIntershelf Link Specifications Common SpecificationsGeneral Card Specifications ASC Specification BNC-3T# SRM-T1/E1 SpecificationService Interface FRSM-4T1 SpecificationSystem Interface Virtual Circuits Card General FRSM-4E1 Specification Transmit frames S Virtual Circuits ATM cells Number of cells transmitted to BNM FRSM-8T1 Specification Appendix B Specifications FRSM-8T1 Specification Release 5.0, Part Number 78-6430-03 Rev. D0, November FRSM-8E1 Specification ATM Layer Per Ccitt I.361 and ATM UNI Virtual Circuits ATM cells Number of cells transmitted to BNM Errors and Alarm Handling FRSM-HS2 SpecificationExternal Interface Specification FRSM-HS2 Line Statistics and Counters SpecificationsCounters per line Statistics LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS Ausm Specification 4 PortService Interface T1 Service Interface E1PCR, SCR VBR, Ccdv CBR ATM InterfaceVPI/VCI CBR, VBR, VBR+Card General Service Interface T1/E1 CESM-4T1/E1 SpecificationESD AAL1 Physical Layer Interface T1 Matm SpecificationSMB-E3E1-LM Physical Layer Interface T3 Physical Layer Interface E1LOS, OOF, AIS, RDI AIM Groups and Links Physical Layer Interface E3Card General Release 5.0, Part Number 78-6430-03 Rev. D0, November Firmware Upgrade and Downgrade Procedures Std. Upgrade Std. Downgrade Core Card Set From Rel Via Using the Procedure TablesStandard Upgrade and Downgrade Procedures Finding the Right ProcedureEnter the tftp put ASCFWfile AXISASCACTIVE.FW command Procedure 1-Standard Upgrade, 1-Core Card SetEnter the tftp put SMFWfile AXISSM1$slot.FW command Procedure 2-Standard Downgrade, 1-Core Card SetProcedure 3-Standard Upgrade, 2-Core Card Set Enter the tftp put ASCFWfile AXISASCSTANDBY.FW command Procedure 4-Standard Downgrade, 2-Core Card Set Enter the tftp put ASCFWfile AXISASCACTIVE.FW command Procedure 5-Standard Upgrade, 1-Core Card Set Enter the tftp put SMFWfile AXISSM1$slot/0.FW command Procedure 6-Standard Upgrade, 2-Core Card SetEnter the tftp put ASCFWfile AXISASCSTANDBY.FW command Enter the tftp put SMBTfile AXISSM1$slot.BOOT command Procedure 7-Standard Downgrade, 1-Core Card SetEnter the tftp put SMFWfile AXISSM1$slot.BOOT command Procedure 8-Standard Downgrade, 2-Core Card SetEnter the tftp put SMBTfile AXISSM!$slot.BOOT command Procedure 9-Standard Upgrade, 1-Core Card Set Procedure 10-Standard Upgrade, 2-Core Card Set Procedure 11-Standard Downgrade, 1-Core Card Set Step Procedure 12-Standard Downgrade, 2-Core Card Set Graceful Upgrade and Downgrade Procedures Procedure 13-Graceful Upgrade, 1-Core Card Set SM only Procedure 14-Graceful Downgrade, 1-Core Card Set SM only Procedure 15-Graceful Upgrade, 2-Core Card Set Enter the tftp put SMBTfile AXISSM1$slot.FW command Procedure 16-Graceful Downgrade, 2-Core Card Set Enter the tftp put SMFWfile AXISSM1$sl26 command Procedure 17-Graceful Upgrade, 1-Core Card Set SM only Procedure 18-Graceful Downgrade, 1-Core Card Set SM only Enter the tftp put SMBTfile AXISSM1$slot.FW command Procedure 19-Graceful Upgrade, 2-Core Card Set Procedure 20-Graceful Upgrade, 2-Core Card Set Release 5.0, Part Number 78-6430-03 Rev. D0, November Procedure 21-Graceful Upgrade, 2-Core Card Set Enter the tftp put SMBTfile AXISSM1$slot.FW command Procedure 22-Graceful Downgrade, 1-Core Card Set SM only Procedure 23-Graceful Upgrade, 2-Core Card Set Enter the tftp put SMBTfile AXISSM1$slot.BOOT command Procedure 24-Graceful Downgrade, 1-Core Card Set SM only Procedure 25-Graceful Upgrade, 2-Core Card Set Enter the tftp put SMBTfile AXISSM1$slot.BOOT command Description of Upgrade/Downgrade Terminology File Size Tftp putASC.FW Slot-Specific and Card-Type-Specific SM Firmware DspfwrevsSoftswitch ResetsysFlashStartAddr and flashEndAddr Compatibility DonotupdatestandbyDspadrxlat DsptotalsClrallcnf Resetsys or clrallcnfSave/Restore ASC Configuration Upgrade/DowngradeSave/Restore SM Configuration D E ASC BNM See CWMCWM Firmware, upgrades Firmware Media KitPEM ASC AusmHssi SIWSnmp Tftp FRSM-HS2 B-24
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MGX 8220 specifications

The Cisco Systems MGX 8220 is a versatile, high-performance media gateway that has become an integral component in the telecommunications infrastructure. Designed to facilitate the transition from traditional circuit-switched networks to advanced packet-switched environments, the MGX 8220 supports a wide array of voice, video, and data services, making it an essential tool for service providers and enterprises seeking to enhance their network capabilities.

One of the key features of the MGX 8220 is its robust signaling and media processing capabilities. Equipped with support for both Voice over IP (VoIP) and traditional telephony protocols, this gateway enables seamless integration of different communication formats. It boasts a modular architecture, which allows for the addition or removal of various line cards to meet changing demands and technology advancements. This modularity provides operators with the flexibility to scale their services without significant overhauls to their existing infrastructure.

The MGX 8220 is capable of delivering high-density media handling for a multitude of services. With its support for ATM and IP networks, the gateway can handle TDM (Time-Division Multiplexing) to packet voice conversions efficiently. It is designed to optimize network resources by dynamically allocating bandwidth based on traffic requirements, thus ensuring efficient use of network resources and improved performance.

Another significant characteristic of the MGX 8220 is its enhanced quality of service (QoS) features. This capability ensures that voice and video traffic is prioritized appropriately, minimizing latency and jitter while maximizing overall call quality. By employing sophisticated traffic management techniques, the MGX 8220 can deliver a superior user experience, which is critical for any service provider aiming to offer competitive communication solutions.

Furthermore, the gateway includes built-in security features to protect against unauthorized access and ensure the integrity of sensitive data. This includes encryption for voice and video transmission, as well as support for secure signaling protocols.

Overall, the Cisco Systems MGX 8220 stands out as a comprehensive media gateway solution, providing essential functionalities for modern communication needs. Its combination of modularity, high-density processing, effective QoS management, and security features makes it a compelling choice for organizations looking to modernize their telecommunications infrastructure while ensuring reliability and performance. As businesses continue to evolve and demand more from their networks, the MGX 8220 offers a pathway to future-ready communications.