a2h124-48p manual

In a domestic environment this product may cause radio interference in which case the user may be required to take adequate meaYou accept the personal jurisdiction and venue of the Commonwealth of Massachusetts courts. None of the 1980 United Nations Convention on Contracts for the International Sale of Goods, the United Nations Convention on the Limitation Period in the International Sale of Goods, and the UnifA-6 A-12 MGBIC-02 Specifications. A-7 A-13 Compliance Standards.A general knowledge of data communications networks is helpful when setting up the switches. This preface provides an overview of this guide and the SecureStack A2 manual set, a brief summary of each chapter and defines the conventions used throughout this guide. To locate infoCaution: Contains information essential to avoid damage to the equipment. Precaucion: Contiene informacion esencial para prevenir danar el equipo. Achtung: Verwei?t auf wichtige Informationen zum Schutz gegen Beschadigungen. Electrical Hazard: Warns against an action that could result in. No additional stack module is required to stack the switches. Closed Loop Stacking is implemented, which assures that a single switch or cable connection failure in the stack will not impact the overall stack operation. The SecureStack A2 stack auto-config- ures, allowing stack switch units to be added or removed with minimal p a c k e t interruption. Up to eight SecureStack A2 switches can be supported in a stack with a single IP address for complete stack management. Redundant s t a c k management is supported by a s s i g n i n g a primary and multiple secondary stack managers. Switching Services All SecureStack A2 switches support standards-based switching. The IEEE standards for switching (IEEE 802.1D MAC Bridges) and IEEE 802.1t (802.1D Maintenance), as well as Multiple Spanning Trees (IEEE 802.1s) and Rapid Reconvergence (IEEE 802.1w), are fully supported.

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We have 3 Enterasys SecureStack A2 A2H124-48P manuals available for free PDF download: Hardware Installation Manual, Datasheet, Quick Reference. Na me: Enterasys Networks, Inc. Manufacturer ’ s ? Address: 50 ? Minuteman ? Road Andover, ? MA ? 01810 USA European.Blinking: LED is flashing at a steady rate (approximately 50% on, 50% off). Solid: LED is on steady and not pulsing. The L ED being in its off st ate is not a n indication that the RPS is not functioning properly and won’t supply power in the event of an AC power supply failure. Port is linked, but traf fic is not being received or transmitted by the interface. PoE power has failed. PoE power may have been deactivated because of excessive powe r requirement or deactivated by configuration. IP address not assigned. Refer to the SecureStack A2 Configuration Guide for the IP address assignment procedure. Port is disab led. This is normal if the switch is a Member in a stack. Riesgo Electrico: Solamente personal calificado debe realizar procedimientos de instalacion. Elektrischer Gefahrenhinweis: Installationen sollten nur durch ausgebildetes und qualifiziertes Personal vorgenommen werden. Notice EnterasysNetworks reserves the right to make changes in specifications and other information contained in this document and its web site without prior notice. The reader should in all casesOperation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE: This equipment has been tested and found to comply with the limits for a class A digital device, pursuant to Part 15 of the FCC rules.If this equipment is used in a domestic environment, radio disturbance may arise. When such trouble occurs, the user may be required to take corrective actions. BSMI EMC STATEMENT — TAIWAN This is a class A product.

Enterasys and its authorized representatives, upon reasonable notice, the right to audit and examine during Your Enterasys’ right of examination shall be exercised reasonably, in good In the event such audit discovers Agreement, You shall promptly pay to Enterasys the appropriate license fees. Enterasys reserves the right, to be. Page 12 xAbout This GuidePage 18 How to Use This Guide. How to Use This GuideConventions Used in This GuidePage 20 Conventions Used in This GuideThis chapter introduces the A2H124?24P and A2H124?48P stackable switches. Depending on the firmware version used in the SecureStack A2, some features described. Page 22 Overview. OverviewThese switches provide a Page 23 OverviewIf the internal power supply fails, the PoE. Page 25 ConnectivityManagementOut?of?band management is provided through Page 27 LANVIEW Diagnostic LEDs. LANVIEW Diagnostic LEDsGetting HelpPage 28 Getting HelpRefer to page.Page 30 100BASE-TX NetworkThe device at the Page 31: Hardware Installation 3Page 32 Considerations Prior to Installation. Considerations Prior to InstallationRequired ToolsPage 33 Installing the Switch on a Flat Surface. Installing the Switch on a Flat SurfaceInstalling the rubber To install the rubber feet, proceed For instructions to rack mount the Page 34 Installing the Switch on a Flat SurfaceGuidelines for Flat Surface InstallationRack Mounting the SwitchPage 37 Connecting Stacking CablesConfiguring Switches in a StackPage 41 Configuring Switches in a StackYou must now move the console cable to Adding a New Switch. Page 42 Connecting AC and PoE Power. Connecting AC and PoE PowerPage 43 Connecting AC and PoE PowerDuring the Page 44 Connecting to Console Port for Local ManagementPage 45 Connecting to Console Port for Local Management. What Is NeededThe cables are terminated by a DB9 The cables that may be Page 47 Connecting to Console Port for Local Management.

All switches support up to 8,000 addresses and have four hardware queues per port. Ethernet Flow Control (IEEE 802.3x) as well as standards-based Link Aggregation (IEEE 802.3ad) are fully supported in every switch model. In addition, all switches support IGMP Snooping v1 and v2. Traffic Classification and QoS A major component for supporting con- verged networks is traffic classification. Page 4 REGULATORY COMPLIANCE INFORMATIONOperation is subject to the following two conditions: (1) this device NOTE: This equipment has been tested and found to comply with the limits for a class A digital device, pursuant to. Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when This equipment uses, generates, and can radiate radio Operation of this equipment in a residential area is likely to cause interference in which case WARNING:. Page 5 ELECTROMAGNETIC COMPATIBILITY (EMC)This is a class A product based on the standard of the Voluntary Control Council for Interference by Information. Technology Equipment (VCCI). If this equipment is used in a domestic environment, radio disturbance may arise. When such trouble occurs, the user may be required to take corrective actions.In a domestic environment this product may cause radio interference in which case the user Page 9 ENTERASYS NETWORKS, INC.You accept the None of the 1980 United Nations. Convention on Contracts for the International Sale of Goods, the United Nations Convention on the Limitation Period Agreement. Administration Regulations, You agree that You are a civil end user of the Program and agree that You will use the. Program for civil end uses only and not for military purposes.Administration Regulations, in addition to the restriction on transfer set forth in Sections 1 or 2 of this Agreement, You Page 11 THE CUMULATIVE LIABILITY OF ENTERASYS TO YOU FOR ALL CLAIMS RELATING TO THE PROGRAM, You also grant to.

Import ant Notice Depending on the firmware version used in the A2H124-24P and A2H124-48P switches, some features described in this document may not be su pported. Refer to the Rel ease Notes shipped with the SecureS tack A2 to determin e which features are supported. Electrical Hazard: Only qualified perso nnel should perform installation procedures. Riesgo Electrico: So lamente personal calificado d ebe realizar procedimiento s de instalacion. Elektrisch er Gefahrenhinweis: Installationen sollten nur durch ausgebilde tes und qualifiziertes Perso nal vorgenommen werden. Caution: Contains information essential to avoid damage to the equipmen t. Precaucion: Contien e informacion esencial para prevenir danar el equipo. Achtung: V erwei?t auf wichtige Informationen zum Schutz gegen Beschadigungen. Electrical Hazard: Warns against an action that could result in personal injury or death due to an electrical hazard. Riesgo Electrico: Advierte con tra una accion que pudiera resu ltar en lesion corporal o la muerte debido a un riesgo electri co. Wa r n i n g: W arns against an action that could result in personal injury or death. Advertencia: Ad vierte contra una accion que pudiera resultar en lesion corporal o la muerte. W arhinweis: W arnung vor Handlungen, die zu V erletzung von Personen oder gar T odesfallen fuhren konnen! Refer to the Release Notes shipped with th e switch to determine which features are supported. Refer to p age. Overview 1-2 Connectivi ty 1-5 Management 1-6 S tandards Compatibility 1-6 LANVIEW Diagnosti c LEDs 1-7 Getting Help 1-7 Do not connect a SecureS tack C2 Redundant Power System (C 2RPS-SYS) to the power conn ector. Otherwise, damage to the device may result. Precaucion: Los dispositivos A2H124-24P y A2H124-48P cump len con el estandar PoE (power over ethernet). No conecte una fuente de poder redundante (RPS) SecureS tack C2 (C2RPS-SYS) al cable de corriente. De lo con trario, el dispositivo puede danarse.

Connecting to a VT Series TerminalPage 48 Connecting to Console Port for Local ManagementConnecting to the NetworkPage 54 Installing Optional Mini-GBICsFigure 3-18 Mini-GBIC with MT-RJ ConnectorThe receive strand of the applicable Page 59 Installing Optional Mini-GBICs. Figure 3-20 Cable Connection to MT-RJ Multimode Fiber-Optic ConnectorsDo not use optical. Page 61 Installing Optional Mini-GBICsPage 62 Completing the InstallationSwap the cable connections if necessary.To obtain this Page 63: Troubleshooting 4This chapter provides information concerning the following. For information about. Refer to page. Using LANVIEW 4-2. Troubleshooting Checklist 4-7. Using the Reset Password. Page 64 Using LANVIEW. Using LANVIEWThe LANVIEW LEDs on both the A2H124?24P Table 4-1 LANVIEW LEDs (continued). LED Color State Recommended Action. RPS Off The RPS LED remains off. Page 68 Using LANVIEWTroubleshooting ChecklistUsing the Reset Password SwitchRefer to page.Page 74 Switch SpecificationsTable A-2 A2H124-48P Switch Specifications. Item SpecificationPage 77 Gigabit Ethernet SpecificationsPage 79 Console Port Pinout AssignmentsRegulatory ComplianceNumerics HPage 82 Pinout assignments Stack Manager. Page Count: 82 Elektrischer Gefa hrenhinweis: Inst allationen sollten nur durch ausgebildete s und qualifiziertes Personal vorgeno mmen werden. Dieses ? Produkt ? zah lt ? zur ? Klasse ? A ? ( ? Industriebereich ? ). ? In ? W ohnbereichen ? kann ? es ? hierdurch ? zu ? Funkstorungen ? kommen, ? daher ? sollten ? angemessene ? Vo r k e h r u n g e n.Na me: Enterasys Networks, Inc. Manufacturer ’ s ? Address: 50 ? Minuteman ? Road Andover, ? MA ? 01810 USA European. Equipment, ? for ? use ? in ? a ? Commer cial ? or ? Light ? Industrial ? Environment. Enterasys Networks, Inc. ? declares ? that ? the ? equipm ent ? packaged ? with ? this ? notice ? conf orms ? to ? the ? above ? directives. Secur eStack ? A2 ? Configuration ? Guide. Who Should Use This Guide This.

Precaucion: Conecte una fuente de poder redund ante (RPS) SecureS tack PoE (C2RPS- POE) al cable de corrie nte. De lo contrario, el dispositivo puede dana rse. Note: When switches are co nnected in a stack configuration and all stacking cables are connected before poweri ng up t he switches, one switch in t he stack will be automatically designated as the Manager of th e stack and its Console port will remain active. All other switches will becom e Member switches and their Console ports will be deactivated. For more details, refer to Chapter 4. 1 2 11 12 13579 1 1 13 1 51 71 92 12 3 24681 0 12 14 16 18 20 2 22 4 123456789 1 0 1 1 12 A A A Do not use optical instru ments to view the laser output. T he use of optical inst ruments to view laser output increases eye hazard. When vie wing the output opti cal por t, power must be removed from the network adapter. Advertencia: L os Mini-GBICS de fibra optica usan lasers de clase 1. No se debe usar instrumentos opticos para ver la potencia lase r. El uso de los instrumentos opticos para ver la potencia l aser incrementa el riesgo a los ojos. Cuando vean el puerto de la potencia optica, la corriente deb e ser removida del a daptador de la red. W arnhinwei s: Mini-GBICs mit Fiber-Optik T echnologie benutzen Laser der Klasse 1. Benutzen sie keinesfalls optische Hilfsmittel, um die Funktion des La sers zu uberprufen. Solche Hilfsmittel erhohen die Gefahr von Sehschaden. Wenn sie den optischen Port uberprufen mochten stellen Sie sicher, dass die Kompo nente von der S pannungsversorgung getrennt ist. The Mini-GBIC and the device are sensitive to static discharge s. Use an antistatic wrist strap and observe all static precautions du ring this procedure. Failure to do so could result in damage to the Mini -GBIC or the switch. Alwa ys leave the Mini-GBIC in the antistatic bag or an equivalent antistatic container when not installed.

Precaucion: Siga las instrucciones del manual para no danar el Mini-GBIC ni del aparato, puesto que son muy sensible a las descargas de electricid ad estatica. Utilice la pulsera antiestatica y tome todas las preca uciones ne cesarias durante este procedimiento. Si no lo hace, podria danar el Mini-GBIC o del apar ato. Mientras no este in stalado, mantenga el Mini-GBIC en su bolsa antiestatica o en cualquier otro recipiente antiestatico. The Mini-GBIC and i ts host swit ch are sensitive to static discharges. Use an antistatic wrist strap and observe all static precautions du ring this procedure. Failure to do so could result in damaging the Mini-GBIC or host switch. Always leave the Mini-GBIC in the antistatic bag or an equivalent antistatic container when not installed. Precaucion: NO quite el Mini-GBIC de la ranura si n antes abrir la traba ubicada en la parte frontal del Mini-GBIC. Si lo hace, puede danar el Mini-GBIC, puesto que es muy sensibl e a las descargas de electricidad estatica, al igual qu e el dispositivo host. Utilice la pulsera antiestatica y tome todas las precauciones necesaria s durante este procedimiento. Si no lo hace, pude danar el Mini-GBIC o el dispositivo host. Mientras no este instalado, mantenga el Mini-GBIC en su bolsa antiestatica o en cualquier otro recipiente antiestatico. Do not use optical instruments to view the laser output. The use of optical inst ruments to view laser ou tput increases eye hazard. When viewing the output optical por t, power must be remove d from the network adapter. Advertencia: Lo s Mini-GBICS de fibra optica usan la sers de clase 1. No se debe usar instrumentos opticos para ver la potencia lase r. El uso de los i nstrumentos opticos para ver la potencia laser incrementa el riesgo a los ojos. Cua ndo vean el puerto de la potenci a optica, la corri ente debe ser removida del adaptador de la red. W arnhinw eis: Mini-GBICs mit Fiber-Optik T echnologie benutzen Laser der Klasse 1.

For opti cal and operating range speci fications, refer to “ MGBIC-LC03 S pecifications (1000BASE-SX) ” on page A-5. MGBIC-LC09 Provides one 1000B ASE-LX compliant LC fiber-opt ic single-mode port with a standard LC connector. For optical and operating range specifications, refe r to “ MGBIC-LC09 S pecifications (1000BASE-LX) ” on page A-6. MGBIC-MT01 Provides one 1000BASE-SX complia nt LC fiber-optic multimode port with a standard MT -RJ conne ctor. For optical and operating range specifications, refe r to “ MGBIC-08 S pecifications (1000BASE-ELX) ” on page A-6. MGBIC-02 Provides one RJ45 copper connecti on that is compliant with the 1000BASE-T standard RJ45 connector. F or operating range specifications, refer to “ MGBIC-02 S pecifications (1000BASE-T) ” on page A -7. HTTP ? based ? We b ? management ? application ? (W ebView ) ? is ? an ? intuitive ? web ? tool ? for ? simple ? management ? tasks. Switch Configuration Using CLI Commands The.Refer to p age. 10BASE-T Network 2-1 100BASE-TX Network 2-2 1000BASE-FX Network 2-2 1000BASE-T Network 2-2 Note: The network installation must meet the requireme nts described in this chapter to ensure satisfactory performanc e of this equipment. Failure to do so will produce poor network perf ormance. Note: If an RJ45 port is to oper ate at 100 Mbps, Category 5 cabling must be used. Category 3 cabling doe s not meet the 100 Mbps specifications. Refer to 100BASE-TX Network (page 2-2) for inform ation about 100BASE-TX networks and cabling. This is accomplished by the Se cureS tack A2 when Auto-Negotiation is enabled. T his enables the SecureS tack A2 to automatically sense the transmission speed of the other device and adjust for the speed accordingly. Riesgo Electrico: So lamente personal calificado d ebe realizar procedimiento s de instalacion. Elektrisch er Gefahrenhinweis: Installationen sollten nur durch ausgebilde tes und qualifiziertes Perso nal vorgenommen werden.

Import ant Notice Read the Release Notes sh ipped with the switch to check for any exceptions to the supported features and operation do cumented in this gu ide. Refer to p age. Considerations Prior to Installation 3-2 Required T ools 3-2 Unpacking the Switch 3-2 Installing the Switch on a Flat Surface 3-3 Connecting St acking Cables 3-7 Configuring Switches in a S tack 3-9 Connecting AC and PoE Power 3-12 Connecting to Console Port fo r Local Management 3-14 Connecting to the Network 3-19 Installing Optional Mini-GBICs 3-22 Completing the Installation 3-32 Do not connect the swit ch to the AC power source until instructed to do so later in the instal lation process. Precaucion: Para asegura r una buena ventilacion y evitar que el sistema se sobrecaliente, deje un espacio minimo de 5.1 cm (2 pulgadas) con respecto a los lados y a la parte posterior del aparato.Wa r n i n g: Before rack-mounting the switch, ensure that the rack can support it without compromising stability. Advertencia: Antes de montar el equipo en el rack, asegurarse que el rack puede soportar su peso sin comprometer su propia estabilidad, de otra forma, dano personal o del equipo puede ocurrir.When adding a new switch to an already runnin g st ack, it is also assumed that the new switch is using the same firmware image version as other switches in the stack. Note: Once switch IDs are a ssigned, they are persis tent and will be retained during a power cycle to any or all of the switches. Note: If you plan to connect all the switches quickly to allow automatic Manager selection, wait until all switches are fully operat ional before proceeding to the next step. M AC A DD RESS SE RIAL N O. AC LINE 100-240 V AC 50-60 Hz 5.1 A MAX. A A A F or more information about the L ED indications and troubleshooting, refer to Chapter 4. If you need additional help, contact En terasys Networks.The switch is only co mpatible with the Se cureS tack C2RPS-POE redundant power supply system.

Benutzen sie keinesfalls optische Hilfsmittel, um die Fu nktion des La sers zu uberprufen. Solche Hilfsmittel erhohen die Gefahr von S ehsch aden. Wenn sie den optischen Port uberprufen mochten stellen Sie sicher, dass die Komponente von der S pannungsversorgung getrennt ist. Caution: Do not touch the ends of the fiber-o ptic strands, and do not le t the ends come in contact with dust, dirt, or other contaminant s. Contamination of cable ends causes problems in dat a transmissions. If t he ends of the fiber-optic strands become contaminated, use a canned duster to blow the surfaces clean. A fiber-port cleaning swab saturated with optical-grade isop ropyl alcohol may also be used to clean the ends. Precaucion: No toque los extremos de los cables de fi bra optica y evite su cont acto con el polvo, la suciedad o con cualquier otro cont aminante. Si los extremos de los cables se ensucian, es posible que la transmision de datos se vea afect ada. Si nota que los extremos de los cables de fibra optica se ensu cian, utilice aire comprimido para limpiarlos. T ambien puede limpiarlos con un estropajo embebido en alcohol isopropilico. Note: T o remove the MT -RJ cable conne ctor, press on its release tab and pull out the cable connector. Do not use optical instruments to view the laser output. Wenn sie den optischen Port uberprufen mochten stellen Sie sicher, dass die Komponente von der S pannungsversorgung getrennt ist. Caution: Do not touch the ends of the fiber-o ptic strands, and do not le t the ends come in contact with dust, dirt, or other contaminant s. Contamination of cable ends causes problems in dat a transmissions. T ambien puede limpiarlos con un estropajo embebido en alcohol isopropilico. Refer to page. Using LANVIEW 4-2 T roubleshoo ting Checklist 4-7 Using the Reset Password Switch 4-9 Caution: There is a risk of explosion if the battery is replaced with an incorrect type. A used battery may be safely disposed in a municipal waste stream.

Precaucion: Hay riesgo de explosion si la bate ria se reemplaza con el typo incorrecto. Puede tirar la bateria usada en la basura. Blinking: LED is flashing at a steady rate (approximately 50% on, 50% off). T able 4-1 LANVIEW LEDs LED Color State Recommended Action CPU Off Power disconnected. If the LED remains off after connecting AC power or DC power from an RPS, check the following: 1. Make sure there is power at the power source (AC source and RPS if applicable). 2. Repl ace the powe r cord with a kno wn good one or check the continui ty of the power cord. 3. If the SecureS tack A2 still d oes not power up, the system may have a fatal error. Contact Enterasys Networks for technical support. Red Solid. Boot-up failed. If the LED remains red for several minutes, the system may have a fatal error. Contact Enterasys Networks for technical support. Blinking. Diagnostics have failed. Contact Enterasys Networks for technical support. Amber Solid. Diagnostics are running. If the LED remains amber for more than several minutes, contact Enterasys Networks for technical support. Blinking. Code image is being downloaded. This also notes wh en the configuration is be ing saved to member units. (This occurs every 15 minutes and whe n the user enters the “save config” command). None. Green Solid. System is fully functional. None. Blinking. Boot-up in process. None. Green Solid. V alid co nnection to switch stackup connector. Flashing. Information is being transferred via the stacking cable. None. UP Off No valid connection to switch stackdown connector. 1. Make sure the switch connected to the stackdown connector is powered on. 2. Replace cable with a known good one. 3. If the problem still exists, contact Enterasys Networks for technical support. Green Solid. V alid co nnection to switch stackdown connector. Flashing. Information is being transferred via the stacking cable. None. Manager Off Switch is operating as a Member in the stack. None. Green Solid.

Switch is operating as the Manager of the stack. None. T able 4-1 LANVIEW LEDs (continued) LED Color State Recommended Action The L ED being in its off st ate is not a n indication that the RPS is not functioning properly and won’t supply power in the event of an AC power supply failure. See Amber state below. None. Amber Solid.The switch internal power supply failed, and the RPS is providing the proper power to the switch. 1. Ensure that the AC power cord is plugged in correctly and that there is power at the AC power so urce. 2. Repl ace the powe r cord with a kno wn good one. 3. If the problem persists, cont act Enterasys Networks for technical support. Link Activity Off 1. No link - no connection. 2. Remote device powered off. 3. Port in standby. 4. Cable is bad. None. Power on remo te device. Use CLI to enable port. Replace UTP cable with a kno wn good one. Green Solid. Port is linked, but the interface i s not receiving any traffic. None. Blinking. Port is linked and traffic is being received or transmitted by the interface. None. T able 4-1 LANVIEW LEDs (continued) LED Color State Recommended Action Port is linked, but traf fic is not being received or transmitted by the interface. Power Supply failed. 1. Check th e attached po wered device to see if it is defect ive. 2. Intern al power supp ly failed, co ntact Enterasys Networks for technical support. Blinking. Port is linked and traffic is being received or transmitted by the interface. Power supply failed. 1. Check th e attached po wered device to see if it is defect ive. 2. Intern al power supp ly failed, co ntact Enterasys Networks for technical support. T able 4-1 LANVIEW LEDs (continued) LED Color State Recommended Action Loss of power. Ensure that the SecureS tack A2 was installed properly according to the installation instructions in Chapter 3. Ensure that the power cord s are connected properly to an active power source that meets the AC input specifications for this switch.

Ensure that the AC power cord is not damaged. Replace the power co rd with a known good one. All LEDs are OFF Possible mismatch in code between the master and the device. If the switch does not have the same code as the stack master the switch will not join the stack and all L EDs will remain off. Connect to the console port and type “show switch”. If a code mismatch is the cause, the output of the above command will show “code version mismatch”. Disconnect the switch from the stack and load the necessar y code to match the stack master. No local management startup screen. Incorrect termi nal setup. Refer to th e SecureS tack A2 Configuration Guide for proper setup procedures. Improper Console cable pinouts. Refer to Appendix A for proper Console port pinouts. Corrupt firmware image, or hardware fault. If possible, attempt to downl oad the image to the device again. Refer to the SecureSt ack A2 Configuration Gui de for details. Cannot navigate beyond startup screen. Improper Community Names Ta b l e. Refer to th e SecureS tack A2 Configuration Guide for the Community Names T able setup. IP address not assigned. If operating as a standalone sw itch or as the Manager in a stack, enable the port. No link to switch. V erify th at all network connections between the network managemen t station and the device are valid and operatin g. If the problem continues, contact Enterasys Networks fo r technical support. Port(s) goes into standby for no apparent reason. Loop condition detected. V erify that S panning T ree is e nabled. Refer to th e SecureS tack A2 Configuration Guide for the instructions to set the type of ST A. Review the network design and delete unnecessary loops. If the problem continues, contact Enterasys Networks fo r technical support. User parameters (IP address, switch and module name, et c.) were lost when the SecureS tack A2 power was cycled. Clear NVRAM was set using CLI commands. Reenter the lost parameters as necessary.

Refer t o the SecureS tack A2 Configuration Guide for the instructions to configure the SecureS tack A2 using CLI commands. User powered the switch off before the configuration was saved (configuration chan ges on the A2 are internally saved every two minutes). Execute the “save c onfig” command, and wait for the prompt to come back before Powering the switch off. Executing the “reset” command automatically saves the config before resetting the switch. T able 4-2 T roubleshooting Check list (continued) Problem Possible Cause Recommended Acti on Console CPU RPS MGR A In standalone mode, these ports can be used for host connections and interswitch links. SFP ports 27 and 28 T wo slots that s upport optional Mini -GBICs 1000BASE-FX fiber-optic connections and 1000BASE-T copper connections. In standalone mode, these ports can be used for host connections and interswitch links. SFP ports 51 and 52 T wo slots that s upport optional Mini-G BICs for 1000BASE-T Gigabit copper a nd 1000BASE-FX fiber- optic connections.MGBIC-LC03 Provides one LC Long Haul (up to 2 KM) fiber-optic multimode port that is compliant with the 1 000BASE-SX standard LC duplex style connector. MGBIC-LC09 Provides one LC fiber-optic singl e-mode port that is compliant wi th the 1000BASE-LX standard LC connector. MGBIC-MT01 Provides one MT -R J fiber-optic multimode port that is compliant with the 1000BASE-SX standard MT -RJ connector. MGBIC-08 Provides one LC fiber-optic singl e-mode port that is compliant wi th the 1000BASE-ELX standard LC conne ctor. MGBIC-02 Provides one RJ45 copper con nection that is compliant with the 1000BASE-T standard RJ45 connector.Th e Link Power Budget must no t exceed those specifie d in this table. The MGBIC-LC03 input power must not exceed -3 dBm.Use the Link Power Budget to calculate the maximum cable length of the attached segmen t. The Link Power Budget must no t exceed those specified in this table. The MGBIC-08 input power must not exceed -3 dBm.