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IBM 8260 manual ∙ Show Power Mode, ∙ a Power Failure Scenario

Models: 8260

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	8260> show hub

Hub Information:

Hub Type: 58G5801

Power Supply Information:

Power Supply Status

------------ ------

1NORMAL

2NORMAL

3FAULTY

4REMOVED

Temperature Information:

Probe	Location		Temperature
-----	--------		-----------
1	FAN_1	25	Degrees Celsius
2	FAN_2	25	Degrees	Celsius
3	FAN_3	25	Degrees	Celsius

Fan Information:

FanStatus

---------

1OKAY

2OKAY

3OKAY


Figure		56. Using the SHOW HUB Command

∙Show Power Mode

The show power mode command was used to show the current power mode. In this scenario, after taking one power supply down, we still had enough power to support all the installed modules; therefore the hub remained in fault tolerant mode.


		8260> show power mode


		Power Management Information
	----------------------------
		Hub Power Modes:
		Fault-Tolerant Mode:	FAULT_TOLERANT
		Fault-Tolerant Status:	FAULT_TOLERANT
		Overheat Power Down Mode:	DISABLE

Figure 57. Using the SHOW POWER MODE Command

∙A Power Failure - Scenario 2

If a power supply should fail and there is not enough power to keep the 8260 in the fault-tolerant mode, you will receive a message informing you that the

Chapter 5. 8260 Intelligent Power Management Subsystem 87

Image 109

IBM 8260 manual ∙ Show Power Mode, ∙ a Power Failure Scenario

Contents

Multiprotocol Intelligent Switching Hub Page Multiprotocol Intelligent Switching Hub Take Note First Edition MayAbstract Iv 8260 Multiprotocol Intelligent Switching Hub Contents Chapter Intelligent Cooling Subsystem Ethernet Modules Intelligent Power Management SubsystemJitter Attenuator Daughter Card Jadc Configuring the Dual Fiber Repeater Module 188Speed Detection Active Modules 149 Passive Modules 185Multiprotocol Interconnect Module Appendix A. Power Requirements for 8250/8260 ModulesSample of Hierarchical Structure Command Output from Show Community CommandBackplane Path Display for Ethernet Segments Forced Termination of Existing DMM UsersFront View of 10-Port 10Base-FB Module 115 Configuring Port Redundancy for 8260 Ethernet Modules116 135182 133 Displaying the Status of Surrogate Features 234 134An Example of Rmon Implementation 228LMS Ospf Default Static Convert Table Panel LMS Ospf Default RIP Convert Table PanelLMS Ospf System Parameter Panel Tables Xiv 8260 Multiprotocol Intelligent Switching Hub Special Notices AIX How This Document is Organized PrefaceRelated Publications How to Order Itso Technical Bulletins RedbooksInternational Technical Support Organization Publications Acknowledgments Xx 8260 Multiprotocol Intelligent Switching Hub Introduction An Overview of the IBM 8260 HubMultiprotocol Intelligent Switching Hub IBM 8260 Model 8260 Hardware Description1.1 8260 Backplane There are three models 8260-017 8260-010 8260-17AIBM 8260 Model Payload AreaComponents of the 8250 Adapter Kit Intelligent Power Subsystem Fault-Tolerant Controller Module Slots3 8260 Model Intelligent Cooling SubsystemDistributed Management Architecture Ethernet Modules 8260 Modules and Daughter Cards1.1 8260 Ethernet 24-Port 10Base-T Module Token-Ring Modules Management and Controller Modules Ethernet Media Access Daughter Card E-MAC 3.2 8260 Fault-Tolerant Controller module3.4 8260 Token-Ring Media Access Daughter Card T-MAC 12 8260 Multiprotocol Intelligent Switching Hub LAN Segments on the Backplane Backplane ArchitectureEnhanced TriChannel Bus ShuntBus Ethernet Segments on the BackplaneShow Backplanepaths Ethernet Description Method Data in NRZ format ∙ Data enable signalLocal collision Remote CollisionAnalog Collision Detection Digital Collision DetectionStatistics Collection Token-Ring Segments on the BackplaneShow Backplanepaths Tokenring SET Module slot.sublsot Network tokenringnShuntBus and Token-Ring SET Module slot.sublsot Network FDDIn Fddi Segments on the BackplaneNetwork Allocations on the 8260 Backplane An example of the output from this command is shown in onTriChannel Backplane Network Allocation ShuntBus Backplane Network Allocation Management LAN Mlan Management BusesManagement Buses Serial Control Interface SCI28 8260 Multiprotocol Intelligent Switching Hub 8260 Fault Tolerant Controller Module Overview Fault Tolerant Controller ModuleFront View of the Controller Module Controller Module Front PanelLED Test Button Hub Reset ButtonController Module Fault Tolerance 4 8260 Fault Tolerant Controller Module Considerations 34 8260 Multiprotocol Intelligent Switching Hub 8260 Distributed Management Architecture Distributed Management Architecture36 8260 Multiprotocol Intelligent Switching Hub − Statistics and fault reporting − Configuration− Out-of-band and in-band downloading − Snmp supportIP Addressing for DMM Distributed Management Module DMM Unpacking and Installing the DMMOn page 41 shows the meaning of the status LED DMM LED IndicatorsLED Console and Auxiliary PortsPin # Signal Name Modems for Connecting Terminals to DMMProcedure Command Configuring the DMMThree types of users can be used to access DMM Configuring DMM Users∙ Administrator ∙ UserChanging Superuser Password 8260A show loginDisplay of Defined DMM Users 8260A clear login index allConfiguring Terminal Settings for DMM Resetting Superuser Password to Factory DefaultSet terminal console baud ∙ Set Terminal ConsoleSet terminal console mode slip 8260A set terminal console mode commandlineSet terminal console databits Set terminal console stopbitsSet terminal console hangup enable Set ip defaultgateway 9.67.46.2 slipSet ip ipaddress 9.67.46.1 slip Set ip ipaddress ff.ff.ff.f0 slip8260A set terminal timeout Configuring DMM DeviceShow terminal Set clock 1545 95/1/19 Thursday∙ Set Device − Device diagnostics8260A set device macaddrorder noncanonical 8260A set device diagnostics disable8260A set device dipconfiguration disable 8260A set device resetmastership enable8260A set device dipconfiguration enable 8260A set device trapreceiver enable8260A save device Configuring DMM IP Parameters8260A show device 8260A set ip ipaddress 9.67.46.235 tokenring108260A set ip activedefaultgateway 8260A set ip defaultgateway 9.67.46.238 tokenring108260A show ip 8260A clear ip index8260A set community public 9.67.46.45 all Configuring DMM Snmp Parameters8260A show community 8260A set alert change enable 8260A set alert authentication enable8260A set alert hello enable 8260A set alert consoledisplay enable8260A set port 2.1 alterfilter enabledisable 8260A set alert portupdown enabledisablefilterEC-DMM Ethernet Carrier Distributed Management Module EC-DMM Front Panel Installing the EC-DMMJumpering for the EC-DMM DB-9 Ports EC-DMM LED DescriptionMAC Daughter Cards Perport EC-DMM Ethernet MAC Daughter Card E-MAC Configuration E-MAC8260A set module 2.2 network ethernet1 8260A set module 2.2 interface enabledisablestandby8260A show module 1.2 verbose Token-Ring MAC Daughter Card T-MAC Configuring T-MAC8260A set module 6.2 monitorcontention enable disable 8260A set module 6.2 earlytokenrelease enable disable8260A set module 6.2 interface enabledisablestandby 8260A show module 6.2 verbose 8260A set module 6.2 network tokenring10TOKENRING10 Managing 8260 Using DMM and 8250 xMMManaging 8260 with 8250 xMM Managing 8260 with DMMSample of Hierarchical Structure Command Overview of Management and Control Commands72 8260 Multiprotocol Intelligent Switching Hub Intelligent Power Management Subsystem Intelligent Power Management SubsystemSET Power Slot slot Class 1 to Power ClassAn example of the output for this command is shown in on Show Power Slot slotallShow HUB Configuring 8260 Power SuppliesShow Power Budget Output from Show Power Budget Command Non-Fault Tolerant ModeSET Power Mode nonfaulttolerant Fault Tolerant ModeLoad Sharing Power Supplies SET Power Mode faulttolerantInstalling 8260 Module in an 8260 Managed by DMM Managing PowerHUB Installing 8250 Module in a Hub Managed by DMM Installing 8260 Module in an 8260 Not Managed by DMMInstalling 8250 Modules in an 8260 Managed by DMM Controlling Power to the 8260 Modules Installing 8250 Module in a Hub Not Managed by DMMPower Management Considerations SET Power Slot slot Mode enabledisable∙ a Power-Supply Failure Scenario Power Management Scenarios∙ Show Hub ∙ a Power Failure Scenario ∙ Show Power Mode∙ Power Mode is Automatically Recovered Installing the 8260 Power Supply 90 8260 Multiprotocol Intelligent Switching Hub Fan Units Intelligent Cooling Subsystem92 8260 Multiprotocol Intelligent Switching Hub Output from Show Power Mode Command SET Overheatautopowerdown enabledisableCooling Zones and Power Classes Flow Chart for an Overheat Condition 96 8260 Multiprotocol Intelligent Switching Hub Ethernet LAN Overview Ethernet ModulesCSMA/CD Frame Size Ethernet Addressing ModeData Integrity 8260 Ethernet 24-Port 10Base-T Module Module Equivalent Distance meters LED Name Color State Description Port 10Base-T Module Side View Expanded view of the DIP switches is shown in onNetwork Selection Switch 10Base-T Module Usage Configuring the 10Base-T ModuleSET Port slot.port Network network SET Port slot.port Mode Redundant slot.port SET Port slot.port Mode enabledisableSET Port slot.port Mode NON-REDUNDANT SET Port slot.port Autopolarity enabledisable8260 Ethernet 20/40-Port 10Base-T Module Equivalent Distances for 20/40 10Base-T Modules Front View of 20/40-Port 10Base-T Modules Describes the meaning of these LEDs40-Port 10Base-T Module Side View 40-Port 10Base-T DIP Switches SET Port slot.port Network network Configuring the 20/40-Port 10Base-T ModulesSET Port slot.port Squelch normallow SET Port slot.port Linkintegrity enabledisable8260 Ethernet 10-Port 10Base-FB Module Equivalent Distances for Ethernet 10Base-FB Module LED Name Color State Description Port 10Base-FB Module Side View Port 10Base-FB DIP Switches 10Base-FB Module Usage Configuring the 10Base-FB ModuleConfiguring Port Redundancy for 8260 Ethernet Modules 10 8260 Ethernet Modules Summary SET Port slot.port Highpower enabledisable11 8260 Ethernet Security Daughter Card Intrusion Protection Operation of Security CardEavesdropping Protection 8260A set security port 2.15 auto-learning enable Configuring the Security Module8260A set module 7.2 network ethernet3 8260A show security network ethernet38260A set security network ethernet3 mode enable 8260A set security network ethernet3 auto-learning enable8260A set security network ethernet3 auto-learning disable Output from this command for our network is shown in Figure8260A set security port 2.15 intruderchecking enable 8260A set security port 2.15 jamming enable8260A save security addresstable An example of the resulting display is shown in Figure 8260A set security network ethernet3 intruderjamming enable8260A set security port 2.15 failsafe enable Token-Ring LAN Overview Token-Ring SupportRing Operation Active Monitor Ring AdministrationToken-Claiming Process Ring ErrorsDifferential Manchester Coding Differential Manchester CodingPhase Jitter Clock Recovery8260 Backplane Signalling for TR Segments Self-Shorting Relays on the ShuntBus Backplane Signalling for 4 Mbps Operation Backplane Signalling for 16 Mbps Operation Dual Phase Lock Loop Components of Dual Phase Lock Loop Dpll Implementation on Active Ports Components of Dpll Implemented on Jadc Jitter Attenuator Daughter Card JadcActive Port Technology Passive Port TechnologyPer-Port Switching on the Active Modules Token-Ring Per-Port Switching Static Switch on the Per-Port Switching Modules Show Port slot.port Verbose Static Switch Display for Active Per-Port Switching PortsSwitching Ports with Enabled Static Switch SET Port slot.port Staticswitch enabledisablePort Switching with Source Routing Bridges Signal Flow on the 8260 Token-Ring ModulesSpeed Detection on Active Modules Speed DetectionSpeed Detection on Passive Modules SET Module slot.subslot Speedthreshold 0 to SET Port slot.port Speeddetect enable/disableBeacon Recovery Beacon Recovery IntroductionSET Trunk slot RINGIN.trunk port Networkmap externalinternal SET Port slot.port Stationtype macnotpresentToken-Ring Support SET Device Beacontimeout number of second SET Device Beaconrecovery enabledisableRecovery Asic in Module Switching Module Recovery AsicSH Module slot.subslot Verbose Recovery Asic in Per-Port Switching ModuleDisplay Output for 18-Port Active Per-Port Switching Module Ring Monitor on the Per-Port Switching ModuleBeacon Recovery on the Module Switching Modules Beacon Recovery on the Module Switching Modules Beacon Recovery on the Per-port Switching ModulesAddress-to-Port Mapping for Module Switching Modules Support for Fan-Out Devices Address-to-Port Map Display for a Module Switching Module162 8260 Multiprotocol Intelligent Switching Hub Support for MAC-less Stations SET Network Tokenring tokenringn Mismatchresolution enableAddress-to-Port Map Display for MAC-less Stations Address-to-Port Mapping for Per-Port Switching ModulesToken-Ring Support Address-to-Port Map Display for a Per-Port Switching Module Dual-Ring Topology Wrapback in Dual-Ring Topology Trunk Wrapping on the Active Per-Port Switching ModulesTrunk Wrapping in Active Per-Port Switching Module Trunk Wrapping on the Active Module-Switching ModulesTrunk Unwrapping on the Module-Switching Modules Trunk Unwrapping on the Per-Port Switching ModulesMerge Manager Token-Ring Support 172 8260 Multiprotocol Intelligent Switching Hub SET Network network Bcnrecovery enabledisable Configuring Token-Ring Network ParametersToken-Ring Modules SET Network network Ringspeed 4mbps16MbpsSET Network network Mismatchresolution enable 8260 18-Port Active Per-Port Switching ModuleFront View of 18-Port Active Per-Port Switching Module Port Active Per-Port Switching Module Side View Configuring the 18-Port Active Per-Port Switching Module Active Per-Port Switching Module SET Port slot.port Staticswitch enabledisabledSET Module slot.port Bcnthreshold SET Port slot.port Network network Configuring the 18-Port Active Module Switching Module 8260 18-Port Active Module Switching Module8260 20-Port Passive Module Switching Module SET Module slot.subslot Network networkToken-Ring Modules Front View of 20-Port Passive Module Port Passive Module Module Side View Configuring the 20-Port Passive ModuleSET Module slot.port Speedthreshold SET Port slot.port Speeddetect enabledisable8260 Dual Fiber Repeater Module Front View of Dual Fiber Repeater Module RI/RO SET Port slot.port Staticswitch enable Configuring the Dual Fiber Repeater ModuleEnable/disable trunks SET Port slot.port mode enabledisable 190 8260 Multiprotocol Intelligent Switching Hub Rmon Overview Rmon SupportNetwork Probes An Example of Rmon Implementation Rmon ManagerRmon Goals Problem Detection and ReportingOffline Operation Preemptive MonitoringStandards Multiple ManagersManaging the Ethernet LAN Environment Managing Ethernet LANs with RmonDrop Events Statistics GroupOctets CRC Align ErrorPackets Broadcast PacketsFragments History GroupCollisions Packet Size StatisticsAlarm Group Host Top N Group Host GroupMatrix Group Managing Token-Ring LANs with Rmon Managing the Token-Ring LAN EnvironmentFilter Group Packet Capture Group202 8260 Multiprotocol Intelligent Switching Hub MAC Octet Drop EventMAC Packet Ring Purge EventInternal Error Line ErrorBurst Error Beacon TimeAbort Error ACErrorsLost Frame Error Congestion ErrorToken Error Frequency ErrorSoft Error Report Ring Poll EventTerminal is powered up, it generates some Normal in all networks. For example, when anTotal number of octets of data in good frames Received on the network in non-MAC packets208 8260 Multiprotocol Intelligent Switching Hub RingStationControlTable RingStationTable Ring Station GroupRing Station Order Group Source Routing Group Ring Station Configuration GroupMonitoring Functions Supported 8260A show interface Monitoring Functions Supported by E-MACMonitoring Functions Supported by T-MAC Host History Alarm Event Matrix Statistics TopN-hostsShow Counter Ethernet ethernetn isolated Show Counter Command for Ethernet NetworksShow Counter Interface ethernetn isolated Show Counter Interface for Ethernet Segment Show Counter Repeater for Ethernet Segment Show Counter Rmon Hosts network all macaddressSET Rmon Host Interface index Collecting and Displaying Rmon Groups Using E-MACSet module slot.subslot rmonprobe enable Set module slot.subslot interface enableSET Rmon Host Interface interface index SET Rmon History Interface interface indexShow Rmon rmongroup Control ALL Set rmon host ethernet interfaceShow Rmon rmon group Data controlindex dataindex Show Rmon statistics Ethernet Control ALLShow Counter Tokenring tokenringn Show Counter Command for Token-Ring NetworksShow Counter Interface token-ringn isolated SET Module slot.subalot DOT5GROUP enable8260A show counter interface tokenring7 Show Counter Rmon Ringstation network all macaddress ring SET Module slot.subslot Rmonhoststats enable8260A show counter rmon ringstation tokenring7 ring Show Counter Rmon Ringstation Using ″all″ Option SET Module slot.subslot Rmonringstationstats enableShow Counter Rmon Trmaclayer network SET Module slot.subslot Rmonmaclayerstats enableShow Counter Rmon Trpromiscuous network Show Counter Rmon Trsourcerouring network SET Module slot.subslot Promiscuousstats enableSET Module slot.subslot Srroutingstats enable Collecting and Displaying Rmon Groups Using T-MACSET Module slot.subslot Rmonpromiscuousstats enable SET Module slot.subslot Rmongroup enableSET Module slot.subslot Rmonsrcroutingstats enable Set module 8.2 rmonhoststats enableShow Counter Rmon rmon group network Surrogate Functions Supported by T-MACEnabling Surrogate Features Using T-MAC Surrogate FunctionsShow Trsurrogate slot.subslot Remstatus Enabling Individual Options within the Surrogate GroupsShow Trsurrogate slot.subslot Crsstation ALL Show Trsurrogate slot.subslot Crsstatus∙ Status of CRS options ∙ Status of CRS Stations optionsShow Trsurrogate slot.subslot Remerrormacframe Displaying the Information Collected by Surrogate FeaturesShow Trsurrogate slot.subslot Remlastsofterror Show Trsurrogate slot.subslot Remisolating10.8 DOT5Group Support by T-MAC Using DOT5Group FunctionsSummary of T-MAC Monitoring Functions 2 of 2. Functions Performed by T-MAC 239 Multiprotocol Interconnect Module240 8260 Multiprotocol Intelligent Switching Hub Front View of the Multiprotocol Interconnect Modules 12V Power Requirements for Multiprotocol Interconnect ModulePut DMM in Maintenance mode using the following DMM command SET Power Module slot.subslot PowerrequirementWhile in Maintenance mode, enter the following command You will be prompted to enter the followingDo you want to enter this into module x.y′ s Eeprom Y/N Bridging FunctionsRouting Functions ∙ DECnet PhaseIP Routing Support RIP ImplementationConfiguring Multiprotocol Interconnect Module DECnet Phase IV Routing SupportIPX Routing Support SET Port slot.port Network ethernetnisolated Local Management System LMS∙ Enable/Disable Write Access ∙ Configuration Menu∙ Status Menu ∙ HelpLMS Short Cut Commands ∙ Close Connection Snmp SupportDot1dBridge Group Configuring the Interconnect Module Using LMS Configuring System Wide Parameters ∙ Change Password ∙ Reset Unit∙ Exit IP Address Community NameTftp Server IP Address Tftp Filename Configuring Port Parameters Physical Port Protocol Parameters ∙ Physical Port ListPhysical Port Interface Parameters ∙ Logical Port ParametersLMS Physical Port List for Ethernet Connections Configuring Physical Port ParametersLMS Physical Ports List for Token-Ring I/O Cards Configuring Physical Port Protocol ParametersThis panel allows you to specify the following options ∙ Commands∙ Ring Speed ∙ Act Mon ParConfiguring Logical Port Parameters Configuring for Bridging Support Port Configuration Summary∙ Encapsulation ∙ Attach Port and Detach PortBridging Facility must be enabled Configuring for Transparent Bridging− Time-To-Delete in seconds ∙ Security Mode− Time-To-Forget in seconds ∙ Source Address Learning ∙ Custom Filtering∙ Source Address Filtering ∙ Always Accept Multicast∙ STP Facility ∙ Bridge Forward Delay Time∙ Bridge Hello Time ∙ STP Domain Address∙ STP Version ∙ Bridge Max Age TimePath Cost Mode Configuring for Source-Route Transparent BridgingManual Port Path Cost ∙ Port Priority∙ Local Segment ∙ Hop Count∙ Largest Frame ∙ Port STE SpanMode∙ Snap Conversion Configuring for Translational BridgingTransparent Bridging Filtering Database Filtering for Bridging Functions∙ IPX Conversion ∙ MAC Address ∙ Scope Entries in the filtering database consist∙ Disposition − Unlearned +− Static − Permanent$− Management% Security Mode Normal ModeOperating Modes for Bridging Ports ∙ Time-to-ForgetSource Address Filtering Destination Address FilteringBroadcast/Multicast Filtering Custom FilteringTest Name ID Number∙ Filter Start Point ∙ Offset∙ Value ∙ Logical Operator∙ Test Name ∙ ID Number∙ Action on Success ∙ Action on FailureConfiguring for Routing Functions LMS IP Panel Configuring for IP RoutingLMS IP Port Address Table Panel ∙ Reassembly timeout ∙ ARP timeout∙ IP Routing ∙ Router ID∙ Proxy ARP Default TTL∙ Source Quench ∙ RedirectRIP Path Cost IP MtuLAN Encapsulation ∙ Broadcast Form∙ Forward Broadcast ∙ Security Access List n∙ Destination Mask ∙ Next HopType ∙ Port∙ Physical Address ∙ Network Address∙ Type ∙ Forward Address ∙ BoothelperLMS Ospf Menu Panel Configuring for Ospf∙ TOS Support ∙ Area Border Router∙ AS Boundary Router ∙ Import RIP Routes∙ Default Action on No Match for Static Routes ∙ Default Action on No Match for RIP Routes∙ Import Static Routes ∙ Trans Delay − PointToPoint Point-to-Point links ∙ AdminStat∙ IP Address ∙ Area IDBackup Designated Router TransDelay∙ RtdDeadInt ∙ AuthKeyAuth Type Area ID∙ Import AS Extern LSA ∙ SPF RunsMetric This is the 32-bit integer identifying the Stub Area∙ Range Net From the Ospf Menu. The resulting panel is shown in on∙ Range Mask Port IP AddressThis parameter specifies the port number of this interface Neighbor Following parameters can be specified for each entry∙ RetransiInt ∙ RtrDeadIntPort Router ID This parameter specifies the IP address of this neighbor∙ Options ∙ EventsAction IP MaskHop Count This parameter specifies the destination IP address maskThis parameter specifies hop count measured in RIP Following parameters can be viewed/modified for each entry This parameter specifies the destination IP address This parameter specifies the Type Of Service for this routeThis parameter specifies hop count for this static route This parameter specifies the destination IP address maskFollowing parameters can be viewed/modified for each entry IP SecurityProtocol ∙ ID∙ Operator ∙ Source Mask ∙ Source Address∙ Destination Address ∙ Option∙ Transmit Check ∙ List No∙ Action on No Match ∙ Receive Check∙ Icmp Generation Configuring for IPX Routing∙ IPX Security ∙ IPX Routing∙ Internet Bcast Handling ∙ Host Number ∙ IPX Port Routing∙ Network Number Monitoring Multiprotocol Interconnect Module ∙ Interface Delay∙ Security List n ∙ Station Statistics∙ Physical Port Protocol Statistics ∙ Icmp Timers∙ Physical Interface Statistics ∙ Logical Port Statistics Screen∙ DECnet IV System Statistics ∙ Ospf Link State Database Table∙ DECnet IV Port Statistics ∙ IPX System Statistics314 8260 Multiprotocol Intelligent Switching Hub Power Requirements for 8250 Ethernet Modules Appendix A. Power Requirements for 8250/8260 ModulesPower Requirements for 8250 Fddi Modules Power Requirements for 8250 Token-Ring ModulesSR/SRT Power Requirements for 8250 Internetworking Modules318 8260 Multiprotocol Intelligent Switching Hub UTP Index NumericsMAC DMM Ethernet Eeprom 324 8260 Multiprotocol Intelligent Switching Hub Rmon Token-ring bucket 208 Burst Error Index Page Please answer the following questions Itso Technical Bulletin EvaluationComments/Suggestions GG24-4370-00 Itso Technical Bulletin Evaluation RED000USA Page GG24-4370-00