Alpine 3800 Series Switch Hardware Installation Guide Extreme Networks, Inc. 3585 Monroe Street Santa Clara, California 95051 (888) 257-3000 http://www.extremenetworks.com Published: March 2000 Part number: 100054-00 Rev.
©2000 Extreme Networks, Inc. All rights reserved. Extreme Networks and BlackDiamond are registered trademarks of Extreme Networks, Inc. in the United States and certain other jurisdictions.
Contents PREFACE Introduction xi Conventions xii Related Publications 1 xiii ALPINE 3800 SERIES SWITCH OVERVIEW Summary of Features 1-1 Port Connections 1-3 Media Types and Distances 1-4 Full-Duplex 1-5 Alpine 3800 Series Switch Components 1-6 Alpine 3804 Switch 1-6 Alpine 3808 Switch 1-7 Alpine 3800 Series Switch Power Supply 1-8 Power Supply LEDs 1-8 Switch Management Module 1-9 SMMi Memory 1-10 SMMi LEDs 1-10 Alpine 3800 Series Switch Fan Tray 1-11 I/O Module Cards 1-11 GM-4Ti Module 1-11 GM-4Xi Modu
I/O Module LEDs 1-16 Alpine 3804 Switch Rear View 1-17 Alpine 3808 Switch Rear View 1-18 2 INSTALLATION AND SETUP Following Safety Information 2-1 Determining the Switch Location 2-2 Installing the Alpine 3800 series switch 2-2 Installing the Alpine 3800 series switch components Installing the Power Supplies 2-6 Installing Module Cards 2-7 Powering On the System 2-9 Checking the Installation 2-9 Connecting Equipment to the Console Port 2-9 Logging In for the First Time 2-11 3 SERVICE AND 2-6 MAINT
B TECHNICAL SPECIFICATIONS INDEX v
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Figures 1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 1-11 2-1 2-2 2-3 2-4 2-5 2-6 2-7 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 Alpine 3804 switch 1-6 Alpine 3808 Switch 1-7 Switch Management Module (SMMi) 1-9 SMMi SODIMM sockets 1-10 GM-4Ti module 1-12 GM-4Xi module 1-13 GM-4Si module 1-14 FM-32Ti module 1-15 FM-24Fi module 1-16 Alpine 3804 switch rear view 1-17 Alpine 3808 switch rear view 1-18 Rack-mount helper bracket 2-3 Alpine 3804 chassis mounted in rack 2-4 Alpine 3808 chassis mounted in rack 2-5 Power supply b
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Tables 1 2 1-1 1-2 1-3 1-4 1-5 1-6 2-1 Notice Icons xii Text Conventions xii Media Types and Distances 1-4 1000BASE-LX70 Specifications 1-5 1000BASE-SX and 1000BASE-LX Specifications Power Supply LEDs 1-8 SMMi LEDs 1-10 I/O Module LEDs 1-16 Console Connector Pinouts 2-10 1-5 ix
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Preface This Preface provides an overview of this guide, describes guide conventions, and lists other publications that may be useful. INTRODUCTION This guide provides the required information to install the Alpine™ 3800 series switch. This guide is intended for use by network administrators who are responsible for installing and setting up network equipment.
PREFACE CONVENTIONS Table 1 and Table 2 list conventions used throughout this guide. Table 1: Notice Icons Icon Notice Type Alerts you to... Note Important features or instructions. Caution Risk of personal injury, system damage, or loss of data. Warning Risk of severe personal injury. Table 2: Text Conventions Convention Description Screen displays This typeface represents information as it appears on the screen, or command syntax.
RELATED PUBLICATIONS RELATED PUBLICATIONS The Alpine documentation set includes the following: • ExtremeWare Software User Guide • ExtremeWare Quick Reference Guide Documentation for Extreme Networks products is available on the World Wide Web at the following location: • http://www.extremenetworks.com/support/documentation.
PREFACE XIV ALPINE 3800 SERIES SWITCH HARDWARE INSTALLATION GUIDE
1 Alpine 3800 Series Switch Overview The Alpine 3800 series switch is a chassis-based, Ethernet service provisioning switch designed for edge and aggregation applications. The Alpine 3800 series switch is flexible and scalable, making it easy for you to meet the changing requirements of your network.
ALPINE 3800 SERIES SWITCH OVERVIEW • Up to 128 switched 10BASE-T/100BASE-TX Ethernet ports (model 3804), or up to 256 switched 10BASE-T/100BASE-TX Ethernet ports (model 3808) • Up to 96 switched 100BASE-FX Fast Ethernet ports (model 3804), or up to 192 switched 100BASE-FX Fast Ethernet ports (model 3808) • Up to 16 switched Gigabit Ethernet ports (model 3804), or up to 32 switched Gigabit Ethernet ports (model 3808) • Fully nonblocking operation — All ports transmit and receive packets at wire speed • Auto
SUMMARY OF FEATURES PORT CONNECTIONS Both Alpine 3800 series switches support the following I/O modules: • GM-4Ti module The GM-4Ti module has four Gigabit Ethernet ports, using standard RJ-45 connectors. The GM-4T module supports autonegotiation of 100BASE-TX/1000BASE-T. • GM-4Xi module The GM-4Xi module has four Gigabit Ethernet ports, using standard Gigabit Interface Connectors (GBICs). The GM-4Xi module supports 1000BASE-SX, 1000BASE-LX, and 1000BASE-LX70 GBIC modules.
ALPINE 3800 SERIES SWITCH OVERVIEW MEDIA TYPES AND DISTANCES Table 1-1 describes the media types and distances for the different types of Alpine 3800 series switch ports. Table 1-1: Media Types and Distances Standard Media Type Mhz/Km Rating Maximum Distance 1000BASE-SX 50/125 µm Multimode Fiber 400 500 Meters 50/125 µm Multimode Fiber 500 550 Meters 62.5/125 µm Multimode Fiber 160 220 Meters 62.
SUMMARY OF FEATURES Table 1-2 describes the specifications for the 1000BASE-LX70 interface. Table 1-2: 1000BASE-LX70 Specifications Parameter Minimum Typical Maximum Optical Output Power 0dBm 3dBm 5dBm* Center Wavelength 1540nm 1550nm 1560nm Transceiver Receiver Optical Input Power Sensitivity -20dBm Optical Input Power Maximum Operating Wavelength -3dBm 1200nm 1560nm *The transmitter output power level for the 1000BASE-LX70 is +5dBm.
ALPINE 3800 SERIES SWITCH OVERVIEW ALPINE 3800 SERIES SWITCH COMPONENTS There are two models in the Alpine 3800 series: the Alpine 3804 switch, and the Alpine 3808 switch.
ALPINE 3800 SERIES SWITCH COMPONENTS ALPINE 3808 SWITCH The Alpine 3808 switch, shown in Figure 1-2, consists of the following components: • One 9-slot chassis with backplane • Eight I/O module slots, labeled Slot 1 through Slot 8 • One SMM module slot • Two power supply slots • One fan tray • One electromagnetic discharge (ESD) wrist strap receptacle Blank for second power supply SERVICE 45012 WHEN INSTALLED IN 3808 THIS WAY UP Hz 50 60 A 13 6 Hz 50 60 V 100-120 200-240 V 100-120 200-240 SLIDE TO
ALPINE 3800 SERIES SWITCH OVERVIEW ALPINE 3800 SERIES SWITCH POWER SUPPLY The Alpine 3800 series switch can have one or two AC or DC power supplies. The AC power supplies auto-sense for 110V and 220V power. The DC power supplies require -48 VDC input line voltage. When two power supplies are present, the power is load-shared between the supplies for enhanced longevity. AC and DC power supplies may be combined in the same chassis. Both AC and DC power supplies are hot-swappable.
ALPINE 3800 SERIES SWITCH COMPONENTS SWITCH MANAGEMENT MODULE The Switch Management Module (SMMi) is responsible for upper-layer protocol processing and switch management functions. The SMMi can store two ExtremeWare software images (version 6.0 or greater) and two switch configurations. Figure 1-3 shows the SMMi.
ALPINE 3800 SERIES SWITCH OVERVIEW SMMI MEMORY The SMMi has two 144-pin SODIMM sockets, and ships with two 128MB SODRAM modules installed, as shown in Figure 1-4. Only SODIMMs supplied by Extreme Networks are supported in the SMMi. 38_SODMs Figure 1-4: SMMi SODIMM sockets For information on adding or removing SODIMMs, refer to Chapter 3. SMMI LEDS Table 1-5 describes the LED behavior on the SMMi.
ALPINE 3800 SERIES SWITCH COMPONENTS ALPINE 3800 SERIES SWITCH FAN TRAY The fan tray for the Alpine 3804 contains 3 fans and the fan tray for the Alpine 3808 contains 5 fans. Fan trays for each model are accessed from the front of the chassis. The fan status is monitored by the software for fan failure conditions. All fan failures and over-temperature events trigger management alerts (for example, SNMP traps and SYSLOG messages).
ALPINE 3800 SERIES SWITCH OVERVIEW Module status LED Port speed LEDs 100/1000 Mbps ports 1 2 3 4 Port status LEDs 38_GM4T Figure 1-5: GM-4Ti module The GM-4Ti module has four Gigabit Ethernet ports. All Gigabit Ethernet ports on this module use standard RJ-45 connectors and autonegotiate for 100BASE-TX or 1000BASE-T. The default configuration of the GM-4Ti modules is as follows: • All ports are added to the default VLAN as untagged.
ALPINE 3800 SERIES SWITCH COMPONENTS GM-4XI MODULE The GM-4Xi module is shown in Figure 1-6. Module status LED Gigabit Ethernet ports 1 2 3 4 Port status LEDs 38_GM4X Figure 1-6: GM-4Xi module The GM-4Xi module has four GBIC-based Gigabit Ethernet ports. All Gigabit Ethernet ports on this module use standard GBIC connectors and support 1000BASE-SX, 1000BASE-LX, and 1000BASE-LX70. The default configuration of the GM-4Xi module is as follows: • All ports are added to the default VLAN as untagged.
ALPINE 3800 SERIES SWITCH OVERVIEW GM-4SI MODULE The GM-4Si module is shown in Figure 1-7. Module status LED 1000 Mbps ports 1 2 3 4 Port status LEDs 38_GM4S Figure 1-7: GM-4Si module The GM-4Si module has four standard MT-RJ connectors. The GM-4Si module supports 1000BASE-SX. The default configuration of the GM-4Si module is as follows: • All ports are added to the default VLAN as untagged. • All ports inherit the properties of the default VLAN (for example, protocol type, VLANid, and so on).
ALPINE 3800 SERIES SWITCH COMPONENTS FM-32TI MODULE The FM-32Ti module is shown in Figure 1-8. Module status LED 1 4 5 8 9 12 13 16 17 20 21 24 25 28 29 32 Port status LEDs 10/100 Mbps ports 38_FM32T Figure 1-8: FM-32Ti module The FM-32Ti module has 32 autosensing 10BASE-T/100BASE-TX ports. All ports use standard RJ-45 connectors. The default configuration of the FM-32Ti module is as follows: • All ports are added to the default VLAN as untagged.
ALPINE 3800 SERIES SWITCH OVERVIEW FM-24FI MODULE The FM-24F module is shown in Figure 1-9. 1 2 3 4 5 6 7 8 9 10 Module status LED 11 12 13 14 15 16 100 Mbps ports with status LEDs 17 18 19 20 21 22 23 24 38_FM24F Figure 1-9: FM-24Fi module The FM-24Fi module has 24 100BASE-FX ports. All FM-24Fi ports use standard MT-RJ connectors. The default configuration of the FM-24Fi module is as follows: • All ports are added to the default VLAN as untagged.
ALPINE 3804 SWITCH REAR VIEW ALPINE 3804 SWITCH REAR VIEW Figure 1-10 shows the rear view of the Alpine 3804 switch.
ALPINE 3800 SERIES SWITCH OVERVIEW ALPINE 3808 SWITCH REAR VIEW Figure 1-11 shows the rear view of the Alpine 3808 switch.
ALPINE 3808 SWITCH REAR VIEW The rear view of the Alpine 3808 switch provides the following: • The chassis serial number • The device Ethernet MAC address • Safety information Alpine 3800 Series Switch Hardware Installation Guide 1-19
ALPINE 3800 SERIES SWITCH OVERVIEW 1-20 Alpine 3800 Series Switch Hardware Installation Guide
2 Installation and Setup This chapter describes the following: • How to decide where to install the Alpine 3800 series switch • How to install the chassis in a rack • How to install the power supply • How to install modules in the chassis • How to connect equipment to the console port • How to check the installation using the Power On Self-Test (POST) Caution: Use of controls or adjustments of performance or procedures other than those specified herein may result in hazardous radiation exposure.
INSTALLATION AND SETUP DETERMINING THE SWITCH LOCATION The Alpine 3800 series switch is suited for use in a wiring closet or equipment room, where it can be mounted in a standard 19-inch equipment rack. Mounting brackets are integrated with the chassis. When deciding where to install the Alpine 3800 series switch, ensure the following: • The switch is accessible and cables can be connected easily. • Water or moisture cannot enter the chassis.
INSTALLING THE ALPINE 3800 SERIES SWITCH BDbrackt Figure 2-1: Rack-mount helper bracket 2 Insert the empty chassis into the 19-inch rack and place it on the helper bracket. 3 Secure the empty chassis with four or eight suitable screws, depending on model, as shown in Figure 2-2 and Figure 2-3.
INSTALLATION AND SETUP 38_rack4 Figure 2-2: Alpine 3804 chassis mounted in rack 2-4 ALPINE 3800 SERIES SWITCH HARDWARE INSTALLATION GUIDE
INSTALLING THE ALPINE 3800 SERIES SWITCH 38_rack8 Figure 2-3: Alpine 3808 chassis mounted in rack 4 Once the chassis is secured, remove the helper bracket.
INSTALLATION AND SETUP INSTALLING THE COMPONENTS ALPINE 3800 SERIES SWITCH Warning: Rack-mount the chassis before installing any Alpine 3800 series switch components. INSTALLING THE POWER SUPPLIES To install the Alpine 3800 series switch power supplies into the mounted chassis, follow these steps: 1 Install the first power supply in an empty power supply bay.
INSTALLING THE ALPINE 3800 SERIES SWITCH COMPONENTS Caution: Support the power supply from the bottom, while holding the central handle on the front of the power supply unit. b Use the centrally mounted handle to slide the power supply into the bay. Use the ejector/injector lever to engage/disengage the power supply connectors during the last inch of insertion into the chassis. c Secure the power supply by tightening the screw on the ejector/injector lever using a #2 Phillips-head screwdriver.
INSTALLATION AND SETUP To install the SMMi follow these steps: 1 Ensure that the SMMi is right side up (printed circuit board, or PCB, on top) and the ejector/injector handles are extended, as shown in Figure 2-5. 38_clips Figure 2-5: SMMi with extended ejector/injector handles 2 Slide the SMMi into the appropriate slot of the chassis, until it is fully seated in the backplane. Use the metal front panel, not the PCB, to guide the SMMi into the chassis.
POWERING ON THE SYSTEM 3 To secure the module in the chassis, close the ejector/injector levers by pushing on them toward the center of the module card, and tighten the screws using a #2 Phillips-head screwdriver. 4 Repeat this procedure for the additional I/O modules, if applicable. POWERING ON THE SYSTEM To turn on power to the system, connect the AC power cable to the power supply and then to the wall outlet. If you have installed two power supplies, connect both power cables.
INSTALLATION AND SETUP Appropriate cables are available from your local supplier. To make your own cables, pinouts for a DB-9 male console connector are described in Table 2-1.
LOGGING IN FOR THE FIRST TIME Figure 2-7 shows the pinouts for a 9-pin to 9-pin (PC-AT) null-modem serial cable. Alpine PC-AT Serial Port Cable connector: 9-pin female Cable connector: 9-pin female Screen Shell DTR 4 TxD 3 RxD 2 CTS 8 Ground 5 DSR 6 RTS 7 DCD 1 Shell Screen DCD 1 RxD 2 TxD 3 DTR 4 Ground 5 DSR 6 RTS 7 CTS 8 38_9pin Figure 2-7: PC-AT serial null-modem cable pinouts LOGGING IN FOR THE FIRST TIME After the Alpine 3800 series switch has completed the POST, it is operational.
INSTALLATION AND SETUP 4 At the password prompt, press [Return]. The default name, admin, has no password assigned. When you have successfully logged on to the system, the command-line prompt displays the system name (for example, Alpine3800>) in its prompt. 5 Assign an IP address and subnetwork mask for VLAN default by typing config vlan default ipaddress 123.45.67.8 255.255.255.0 Your changes take effect immediately.
3 Service and Maintenance This chapter describes the following: • How to remove and replace a module card • How to remove and replace a power supply • How to remove and replace the fan tray • How to add and remove SODIMMs on the SMMi • How to add and remove a GBIC Caution: Use of controls or adjustments of performance or procedures other than those specified herein may result in hazardous radiation exposure.
SERVICE AND MAINTENANCE REMOVING AND REPLACING A MODULE CARD All Alpine 3800 series switch module cards (SMMi modules and I/O modules) are hot-swappable. You do not need to power off the system to remove or insert a module card.
REMOVING REMOVING AND REPLACING A AND REPLACING A POWER SUPPLY POWER SUPPLY Alpine 3800 series switch power supplies are hot-swappable. You can add a second power supply without powering off the chassis. If you have two power supplies installed, you can remove one of them without powering off the chassis. The power supplies on the Alpine 3804 switch are inserted into the lower rear of the chassis. The power supplies on the Alpine 3808 switch are inserted into the front of the chassis.
SERVICE AND MAINTENANCE DC OK DC OK WHEN INSTALLED IN 3804 THIS WAY UP A 13 6 SERVICE Hz 50 60 WHEN INSTALLED IN 3808 THIS WAY UP Hz 50 60 V 100-120 200-240 V 100-120 200-240 A 13 6 SLIDE TO REMOVE 45012 38_pwr Figure 3-1: Alpine 3804 power supply Caution: Ensure the latch covers the AC power connector. The power supply cannot be removed or installed unless the connector is covered.
REMOVING REMOVING AND REPLACING AN AND REPLACING A POWER SUPPLY ALPINE 3808 POWER SUPPLY To remove and replace a power supply on the Alpine 3808 switch, follow these steps: 1 Locate the power supply on the front of the chassis. 2 Remove the AC power cord from the power supply. 3 Slide the locking latch on the power supply so that it covers the AC power connector. 4 Unscrew the screw on the ejector/injector lever using a #2 Phillips-head screwdriver.
SERVICE AND MAINTENANCE Caution: Ensure the latch covers the AC power connector. The power supply cannot be removed or installed unless the connector is covered. 7 Make sure that the replacement power supply is right-side up as described by the text on the front of the power supply, that the ejector/injector lever is open, and that the safety latch covers the AC power connector. 8 Use the centrally mounted handle to slide the power supply into the bay.
REMOVING REMOVING AND REPLACING THE AND REPLACING THE FAN TRAY FAN TRAY The Alpine 3800 fan tray is hot-swappable. You do not need to turn off power to the Alpine 3800 switch to replace the fan tray. You can access the fan tray from the front of the Alpine 3800 chassis. REMOVING AND REPLACING THE ALPINE 3804 FAN TRAY To remove and replace the fan tray in the Alpine 3804 switch, follow these steps: 1 Unscrew the screw securing the fan tray to the chassis, as shown in Figure 3-3.
SERVICE AND MAINTENANCE 38_fanx4 Figure 3-4: Alpine 3804 fan tray 3 Allow the fan blades to stop spinning before removing the fan tray completely. Warning: Avoid personal injury. Keep hands away from rotating fan blades. 4 Insert the new fan tray into the bay. 5 Secure the fan tray by turning the screw clockwise until it becomes tight.
REMOVING REMOVING AND REPLACING THE AND REPLACING THE FAN TRAY ALPINE 3808 FAN TRAY To remove and replace the fan tray in the Alpine 3808 switch, follow these steps: 1 Unscrew the two screws securing the fan tray to the chassis, as shown in Figure 3-5.
SERVICE AND MAINTENANCE E ST AL L N H z 50 60 A 13 6 10 V 200-1 0-220 40 H z 50 60 10 V 200-1 0-220 40 45 01 IN HE W A 13 6 SLI DE 2 TO RE M O VE 38_fanx8 Figure 3-6: Alpine 3808 fan tray 3 Allow the fan blades to stop spinning before removing the fan tray completely. Warning: Avoid personal injury. Keep hands away from rotating fan blades. 4 Insert the new fan tray into the bay. 5 Secure the fan tray by turning the screws clockwise until they become tight.
ADDING ADDING AND AND REMOVING SODIMMS REMOVING SODIMMS To add a SODIMM to the SMMi, follow these steps: 1 Prior to removing or installing SODIMMs on the SMMi, put on the ESD wrist strap that is provided with the chassis, and connect the metal end to the ground receptacle located on the top-right corner of the Alpine 3800 switch front panel. 2 Locate the SODIMM sockets on the SMMi.
SERVICE AND MAINTENANCE ADDING AND REMOVING GBICS GBICs can be added and removed from the Alpine 3800 series switch without powering off the system. The two types of GBIC connectors are shown in Figure 3-8. Module A Module B EW_GBIC Figure 3-8: GBIC connectors GBICs are a Class 1 laser device. Use only Extreme-approved devices. To remove the GBIC connector labeled “Module A,” lift up on the front handle and pull the GBIC out of the slot.
A Safety Information IMPORTANT SAFETY INFORMATION Warning: Read the following safety information thoroughly before installing the Alpine 3800 switch. Failure to follow this safety information can lead to personal injury or damage to the equipment. • Installation, maintenance, removal of parts, and removal of the unit and components must be done by qualified service personnel only.
SAFETY INFORMATION • The socket outlet must be near to the unit and easily accessible. You can only remove power from the unit by disconnecting the power cord from the outlet. • This unit operates under Safety Extra Low Voltage (SELV) conditions according to IEC 950. The conditions are only maintained if the equipment to which it is connected also operates under SELV conditions.
IMPORTANT SAFETY INFORMATION • Yellow/Green wire to the Ground plug terminal, which may be marked with the letter “E” or the Earth symbol or colored yellow/green. CONNECTIONS • Fiber Optic ports - Optical Safety. Never look at the transmit LED/laser through a magnifying device while it is powered on. Never look directly at the fiber TX port and fiber cable ends when they are powered on.
SAFETY INFORMATION A-4 ALPINE 3800 SERIES SWITCH HARDWARE INSTALLATION GUIDE
B Technical Specifications Physical Dimensions - Model 3804 Height 10.5 inches Width 17.32 inches Depth 17 inches Weight — Empty chassis 30 pounds Weight — Fully loaded chassis 40 pounds without power supplies 68 pounds with two power supplies Weight — Each power supply 14 pounds Weight — Each module card 3 pounds Physical Dimensions - Model 3808 Height 21 inches Width 17.32 inches Depth 11.
TECHNICAL SPECIFICATIONS Certification Marks CE (European Community) TUV/GS (German Notified Body) GOST (Russian Federation) C-Tick (Australian Communication Authority) Underwriters Laboratories (USA and Canada) Safety Agency Certifications UL 1950 3rd Edition, listed EN60950:1992/A3:1995 plus ZB/ZC Deviations IEC 950CB Low Voltage Directive (LVD) CSA 22.2#950-95 AS/NZS 3260 EN60825-1 FCC CFR 21 Electromagnetic Interference/ Compatibility (EMI/EMC) FCC CFR 47 part 15 Class A ICES-0003 A/C108.
Index A D air-flow requirements 2-2 Alpine air-flow requirements 2-2 certification marks B-2 components 1-6 console port 1-9 dimensions B-1 features 1-1 I/O modules 1-11 installing 2-2 MAC address 1-17, 1-19 media distances, supported 1-4 media types, supported 1-4 port connections 1-3 power supply 1-8 powering on 2-9 rear view 1-17, 1-18 serial number 1-17, 1-19 size B-1 DIMMs description 1-10 installing and removing 3-11 F fan tray installing 3-7 removing 3-7 features 1-1 FM-24Fi module 1-3, 1-16 FM-
removing 3-2 installation chassis 2-2 DIMMs 3-11 fan tray 3-7 GBICs 3-12 helper bracket 2-2 I/O modules 2-8, 3-2 power supply 2-6 rack-mounting 2-2 SMMi 3-2 installing the system 2-2 IP settings, configuring 2-11 L LEDs I/O modules 1-16 power supply 1-8 SMMi 1-10 logging in 2-11 M MAC address 1-17, 1-19 media types and distances 1-4 memory, SMMi 1-10 P ports connections 1-3 console port settings 2-9 installing and removing GBICs 3-12 power supply installing 2-6 LEDs 1-8 voltage 1-8 powering on 2-9 power-
