SmartSwitch 9000 9H423-26 User’s Guide 9032242-02
Notice Notice Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made. The hardware, firmware, or software described in this manual is subject to change without notice.
Notice FCC Notice This device complies with Part 15 of the FCC rules. Operation 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.
Notice DECLARATION OF CONFORMITY ADDENDUM Application of Council Directive(s): Manufacturer’s Name: Manufacturer’s Address: European Representative Name: European Representative Address: Conformance to Directive(s)/Product Standards: Equipment Type/Environment: 89/336/EEC 73/23/EEC Cabletron Systems, Inc. 35 Industrial Way PO Box 5005 Rochester, NH 03867 Mr. J.
Notice Safety Information CLASS 1 LASER TRANSCEIVERS The 9H423-26 is a Class 1 Laser Product The 9H423-26 uses a Class 1 Laser transceiver. Read the following safety information before installing or operating these adapters. The Class 1 laser transceivers use an optical feedback loop to maintain Class 1 operation limits. This control loop eliminates the need for maintenance checks or adjustments. The output is factory set, and does not allow any user adjustment.
Contents Chapter 1 Introduction Features........................................................................................................................... 1-2 Related Manuals............................................................................................................ 1-6 Getting Help .................................................................................................................. 1-6 Chapter 2 Installing the 9H423-26 Module Unpacking the Module...................
Contents Chapter 5 Specifications Technical Specifications ................................................................................................ 5-1 CPU .......................................................................................................................... 5-1 Memory ................................................................................................................... 5-1 Standards...................................................................................
Chapter 1 Introduction The 9H423-26 (Figure 1-1) is a switching module with twenty-six 100 Mbps Ethernet ports. The module is configured with two RJ21 connectors (Category 5 rated), providing twenty-four ports, and two multimode fiber SC connectors. Each module also provides an additional port that connects directly to the Internal Network Bus (INB) backplane interface. This module uses a SmartSwitch ASIC design and an advanced Intel i960® microprocessor.
Introduction Features Processor The 9H423-26 module is equipped with an advanced Intel i960 microprocessor. This microprocessor provides a platform for all management functions such as Spanning Tree, RMON, and MIB support, within a scalable RISC-Based architecture. Fast Packet Switching The 9H423-26 module incorporates a hardware-based switch design referred to as the SmartSwitch ASIC, a collection of custom ASICs designed specifically for high-speed switching.
Introduction Auto-negotiation The auto-negotiation feature (available only with the 100BASE-T RJ21 ports) allows the module to automatically use the fastest rate supported by the device at the other end (either 10 Mbps or 100 Mbps at either half or full duplex). To negotiate duplex, both the 9H423-26 and the attached device must be configured for auto-negotiation.
Introduction INB The 9H423-26 module attaches to INB-B of the SmartSwitch 9000 Backplane. The INB backplane is designed to transport fixed-length data blocks between modules in the SmartSwitch 9000 using an INB Time Division Multiplexing (ITDM) design. The SmartSwitch 9000 INB bus delivers 2.5 Gbps of true data bandwidth with all control and management communication being serviced on the 8-bit out-of-band bus.
Introduction FAST ENET 9H423-26 SMB CPU INB FAST ENET 26 25 24 23 21 22 19 20 17 18 15 16 13 14 11 12 9 10 7 8 5 6 3 4 1 2 F a s t E N E T F a s t E N E T Figure 1-1.
Introduction Related Manuals The Cabletron Systems manuals listed below should be used to supplement the procedures and technical data contained in this manual.
Chapter 2 Installing the 9H423-26 Module The 9H423-26 module occupies a single slot in the SmartSwitch 9000 chassis. NOTE The INB Terminator Modules must be installed on the rear of the chassis before powering up this module. Refer to the INB Terminator Modules Installation Guide for information and installation procedure. Install the modules by following the steps described later in this chapter. Unpacking the Module 1. Carefully remove the module from the shipping box.
Installing the 9H423-26 Module SMB1 Prom St CNXSTATS Connector Flash CPM Boot Prom i960 DRAM Dip Switch Figure 2-1. User-Accessible Components Setting the Module DIP Switch The DIP switch on the 9H423-26 module (Figure 2-1 ), is an eight-switch DIP located near the left, bottom corner of the module. Each switch is set according to the functions described in Table 2-1.
Installing the 9H423-26 Module See the Cautions at the end of this table. Table 2-1. Function of DIP Switch Switch Function Description Clear Password-1 This module stores user-entered passwords in NVRAM (Nonvolatile Random Access Memory). To clear these passwords, toggle this switch and then reset the module’s processor. Once the module resets, factory default passwords are placed in NVRAM. You can use these default passwords or, if desired, enter new passwords.
Installing the 9H423-26 Module Installing the Module in the SmartSwitch 9000 Chassis To install the 9H423-26 module in the SmartSwitch 9000 chassis, follow the steps below: 1. Remove the blank panel covering the slot in which the module will be mounted. All other slots must be covered to ensure proper air flow and cooling. 2. Attach one end of the ESD wrist strap (packaged with the SmartSwitch 9000 chassis) to your wrist.
Installing the 9H423-26 Module Plastic Tab Jack for ESD Wrist Strap Metal Back-Panel Module Module Guides Warning: Ensure that the circuit card is between the card guides. Lock down the top and bottom plastic tabs at the same time, applying even pressure. Figure 2-2.
Installing the 9H423-26 Module The Reset Switch The Reset switch is located on the front panel, under the top plastic tab as shown in Figure 2-3. It serves three functions: resetting the i960 processor, shutting down the module, or restarting the module. • To reset the i960 processor, press the reset switch twice within three seconds. • To shut down the module, press and hold the reset switch down for three or more seconds.
Chapter 3 Operation The 9H423-26 module is a twenty-seven port device. Two front panel RJ21 connectors support twenty-four 100BASE-T ports, along with two SC fiber connectors that support two 100BASE-FL ports. Each of these twenty-six ports is a separate collision domain, while the 27th port connects to INB-B.
Operation FENIB FENIB FENIB SMB 1 i960 Processor Diagnostic Controller SMB 10 FENIB DC/DC Converter FENIB 1 FENIB FENIB Smart Switch ASIC INB NIB I N B FENIB FENIB 2 FENIB FENIB FENIB FENIB Figure 3-1. Packet Flow for the 9H423-26 FENIB The Fast Ethernet Network Interface Block (FENIB) converts Fast Ethernet data packets received through front-panel ports into a common canonical format that allows the SmartSwitch ASIC Engine to determine the proper destination port.
Operation SmartSwitch ASIC The SmartSwitch ASIC is a hardware-based switch design that is the key building block of the SmartSwitch 9000 hub. The SmartSwitch ASIC makes all filtering/ forwarding decisions in custom hardware as opposed to software as in traditional bridges. This custom hardware enables the SmartSwitch ASIC to process over 750K frames per second.
Operation . LAN A SFS Network LAN B Endpoints on VLAN 2 Endpoints on VLAN 1 Figure 3-2. VLAN-based Network VLAN Domains VLAN domains consist of groups of interconnected VLAN switches separated by routing devices. Figure 3-3 shows such an arrangement. Each group of switches constitutes a VLAN domain. Routing Device VLAN Domain VLAN Domain SFS Network SFS Network VLAN Switch VLAN Switch VLAN Switch VLAN Switch VLAN Switch Figure 3-3.
Operation Fully Meshed VLAN Domains The switches shown in figure 3-3 above are said to be fully meshed. The term “fully meshed” is often used when describing the connections between switches in a domain. Fully meshed implies that there are links between all switches to every other switch. A fully-meshed topology provides high reliability and low delays between endpoints. Figure 3-4 shows a VLAN domain consisting of four fully-meshed VLAN switches.
Operation i960 Core The i960 core provides the SNMP protocol stacks, to support industry-standard MIBs. Additionally, Cabletron enterprise extension MIBs are supported for each media type. Advanced management services, such as the Distributed LAN Monitor, telnet and network address to MAC address mapping, are also provided by the i960 core. The Host engine sends and receives packets via the CPU’s SmartSwitch ASIC Interface.
Operation SMB-10 Bus The SMB-10 is a 10 Mbps management bus located within the SmartSwitch 9000. This bus is used for inter-chassis communication of modules as well as serving as a side-band management channel into the SmartSwitch 9000. The SMB-10 is externalized from the chassis via an optional Ethernet Port Interface Module (EPIM) located on the front of the Environmental Module. Through an EPIM connection, full-SNMP management of the SmartSwitch 9000 is available side-band from user data.
Operation Arbitration for the backplane is accomplished in the INB Time Division Multiplexing (ITDM) logic. The arbitration is a three-level scheme that ensures that no one can get the backplane for more than one time slice at a time. The ITDM RAM contains 256 4-bit locations. This RAM is used to hold slot numbers of modules participating in INB backplane arbitration. The arbitration engine accesses this RAM once every time slice to get a slot number.
Operation Monarch/Slave SmartSwitch 9000 Modules All modules in an SmartSwitch 9000 chassis that transfer packets across the INB backplane have identical INB interfaces. However, one of them has to be selected to perform the backplane arbitration. The lowest slot number module will automatically be selected as the arbitrator. This module will be called the Monarch and others will be Slaves to that module.
Operation 3-10
Chapter 4 LANVIEW LEDs The front panel LANVIEW LEDs indicate the status of the module and may be used as an aid in troubleshooting. Shown in Figure 4-1 are the LANVIEW LEDs of the 9E423-26 module. FAST ENET 9H423-26 System Status INB Receive SMB CPU INB Transmit INB FAST ENET 26 26 Port Transmit Port Receive 25 25 23 24 21 22 19 20 17 18 15 16 13 14 11 12 9 10 7 8 5 6 3 4 1 2 Figure 4-1.
LANVIEW LEDs The functions of the two System Status LEDs, System Management Bus (SMB) and CPU (Central Processing Unit), are listed in Table 4-1. Table 4-1. System Status (SMB and CPU) LEDs LED Color State Description Green Functional Fully operational Yellow Testing Power up testing Yellow (Blinking) Crippled Not fully operational (i.e.
LANVIEW LEDs The functions of the Port Receive LEDs are listed in Table 4-4. Table 4-4. Port Receive LEDs LED Color Green State Link, no activity port enabled Green (Blinking) Link, port disabled Yellow (Flashing) Link, activity, port enabled (flashing to steady on indicates rate) Red Fault Off No link, (port disabled) The functions of the Port Transmit LEDs are listed in Table 4-5. Table 4-5.
LANVIEW LEDs 4-4
Chapter 5 Specifications Technical Specifications CPU Intel i960 RISC based microprocessor Memory 4 Mb Local RAM (expandable to 32 MB) 4 Mb Flash Memory (expandable to 32 MB) 2 Mb Packet RAM 16 Mb DRAM (expandable to 48 MB) Standards IEEE 802.1D IEEE 802.3U 100BASE-T IEEE 802.
Specifications Safety ! CAUTION It is the responsibility of the person who sells the system to which the module will be a part to ensure that the total system meets allowed limits of conducted and radiated emissions. This equipment meets the safety requirements of UL 1950 CSA C22.2 No.
Specifications Environment Operating Temperature: Storage Temperature: Relative Humidity 5° to 40° C (41° to 104° F) -30° to 90° C (-22° to 164° F) 5% to 95% (non-condensing) 5-3
Specifications 5-4
Appendix A 9H423-26 Cabling Requirements To achieve the highest possible performance from your 9H423-26, proper cabling assemblies and connector hardware for a high speed Fast Ethernet connection are required. This appendix reviews the 9H423-26 connector types and explains the proper mating cabling assemblies. Overview The 9H423-26 supports data rates up to 100 Mbps, requiring cables and connecting hardware that can physically transmit signals at that rate without degrading transmission performance.
9H423-26 Cabling Requirements Fast Ethernet Standard Requirements 100BASE-TX The IEEE 802.3u (Fast Ethernet specification) specifies for 100BASE-TX to use either two pair 100 ohm Category 5 unshielded twisted pair (UTP) cable or 2 pair 150 ohm shielded twisted pair (STP) cable. This module utilizes Category 5 100 ohm UTP Cabling systems. Two copper wires, each encased in its own color-coded insulation, are twisted together to form a ‘twisted pair’.
9H423-26 Cabling Requirements Table A-1. RJ45 PINOUT RJ45 Pin # Wire Color Code 5 White/Blue 4 Blue 3 White/Orange 6 Orange 1 White/Green 2 Green 7 White/Brown 8 Brown Pair EIA/TIA 568A Wiring Pair 1 Not used RX+ Pair 2 RXTX+ Pair 3 Pair 4 TXNot used 87654321 Figure A-2. RJ45 Plug Pinout On the 9H423-26, the connecting hardware is not an eight-wire RJ45, but a 50-wire, 25-pair RJ21 (Figure A-3).
9H423-26 Cabling Requirements 25-Pair Cable Contact Pins 1845n17 Figure A-3. RJ21 Connector The RJ21 connector is a D-shaped metal housing that is wired and crimped to a 25-pair UTP cable (Figure A-4). Receive 1 2 Transmit + 26 Receive 27 Transmit 1 26 2 27 3 28 4 29 5 30 6 31 7 32 8 33 9 34 10 35 11 36 12 37 13 38 14 39 15 40 16 41 17 42 18 43 19 44 20 45 21 46 22 47 23 48 24 49 50 25 1845n18 Figure A-4.
9H423-26 Cabling Requirements Table A-2.
9H423-26 Cabling Requirements Table A-2.
9H423-26 Cabling Requirements NOTE The colors in bold designate the primary color of the wire. For example, pin 26 connects to a wire that is primarily white with blue stripes and pin 1’s wire is underlying blue with white stripes. However, because Category 5 has more “twists” than Category 3, vendors might manufacture the twisted pairs with the primary colors only. Therefore pair one will have one white wire, pin 26, twisted with one blue wire, pin 1.
9H423-26 Cabling Requirements Per TIA/EIA 568A, 100 Ω UTP cables and connecting hardware are rated into five classifications: Category 1 through Category 5, based on transmission characteristics and performance requirements. Refer to Table A-3. Table A-3.
9H423-26 Cabling Requirements Return Loss (SRL). Refer to Table A-4. To be labeled as Category 5, the following SRL values must be satisfied. Table A-4. UTP Cable SRL • Freq. f (MHz) CAT 3 (dB) CAT 4 (dB) CAT 5 (dB) 1-10 12 21 23 10-16 12log(f/10) 21-10log(f/10) 23 16-20 - 21-10log(f/10) 23 20-100 - - 23-10log(f/20) Attenuation - Attenuation refers to the amount of signal level degradation through a medium.
9H423-26 Cabling Requirements • Near End Crosstalk (NEXT) Loss - The NEXT cites noise and interference within a pair, or more, of conductors where one conductor induces crosstalk on the other. The Near End refers to coupling that takes place when the transmit signal entering the link couples back to the receive conductor pair a that same end of the link; in other words, the near-transmitted signal is picked up by the nearreceive pair. Refer to Table A-6.
9H423-26 Cabling Requirements Why are CAT 5 Connectors Necessary for 100BASE-TX? Similar to the UTP cable itself, the connector hardware plays an important role in the overall performance of the assembly. If an electrical signal travels through a Category 5 cable with little attenuation and then meets an inferior connector, the signal will presently be degraded due to the connector. It is crucial that the mating connector hardware be of the same or higher category classification.
9H423-26 Cabling Requirements Table A-8. NEXT Loss (Worst Pair Combination) for 100 m • Freq (MHz) CAT 3 (dB) CAT 4 (dB) CAT 5 (dB) 1 58 65 65 4 46 58 65 8 40 52 62 10 38 50 60 16 34 46 56 20 - 44 54 25 - - 52 31.25 - - 50 62.5 - - 44 100.0 - - 40 Return Loss - Return Loss is the measure of the degree of impedance matching between cable and connector. A balanced input signal is applied to a connector pair and the reflected signal is measured.
9H423-26 Cabling Requirements Fiber Optic Cabling As mentioned previously, the 9H423-26 utilizes 1300 nm, 62.5/125 µm fiber. Because it will be primarily used in a ‘backbone cabling’ configuration, the following optical fiber specifications will be stated per this case. (If implementing Horizontal type fiber connections, see TIA/EIA 568A, section 12.2.) The fiber will be multimode graded-index, 62.5/125 µm core/cladding diameter. The following transmission characteristics should be followed as well.
9H423-26 Cabling Requirements A-14
