JULY 1999 LE7402C-TX LH7402C-TX-R2 LH7403C-MMSC-R2 LH7404C-SMSC-R2 LH7403C-MMST-R2 LH7403C-SMST-R2 MEDIA CONVERTER 7000 ™ “redundant twister” MODULES 100 BASE 10 BASE RESET PWR SW RESET LK M A I N PWR SW RESET LK P R I AT AT LK LK S E C MAIN AT LK P R I S E C AT 100 BASE “redundant twister” LK M A I N AT 100 BASE “redundant twister” AT LK PWR SW AT SW SECONDARY R X T X MAIN PWR RESET AT R X T X AT SECONDARY PRIMARY LK LK LK AT R X T X PRIMARY LK AT R X T X LK AT S
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Table of Contents Media Converter 7000 “redundant twister” Module Installation & User Guide Product Overview ....................................................................................... 4 Installation Guide ...................................................................................... 7 STEP 1: Unpacking the “redundant twister” Module ................... 7 STEP 2: Setting the DIP Switches ............................................... 7 STEP 3: Setting the MDI-II/MDI-X Switch ..........
Overview The Media Converter 7000 “redundant twister” Module offers the resiliency of data link redundancy to ensure network integrity with no down time. This link duplication provides the non-stop networking capability essential for high priority traffic and mission-critical applications. The “redundant twister” modules provide full redundant data paths for Ethernet or Fast Ethernet devices. The Fast Ethernet “redundant twister” modules also provide 100BASE-TX to FX media conversion.
• All twisted-pair ports are equipped with an MDI-II to MDI-X switch eliminating the need for crossover cables. • Auto-polarity support on all twisted-pair ports. • Functions with devices configured for auto-negotiation (parallel detection). • Fused power on each module protects the system from a short circuit on a module. This prevents a faulty module from bringing down the entire system.
Installation Guide
Installation Guide Follow the simple steps outlined in this section of the manual to install and start using your “redundant twister” Module. 1 Unpack the “redundant twister” Module. Check that the following components have been included with your order: • “redundant twister” Module Your order has been provided with the safest possible packaging, but shipping damage does occasionally occur. Inspect your order carefully for damage that may have occurred during shipment.
The DIP switches are marked on the printed circuit board and can be set for the following operational functions: Switch Name TX AUTO LINK LLCF Position* Operation UP Data transmits on both the PRIMARY and SECONDARY ports simultaneously. Link on both must be enabled. DOWN (default) Data transmits on the active port only. UP Active port automatically reverts back to the PRIMARY port when the primary link is re-established.
RED UP Operates in Dynamic Recovery Mode (DRM). (default) If the PRIMARY link fails, the SECONDARY port becomes active. Refer to the description of the AUTO switch. DOWN Operates in Network Select Mode (NSM). Use the RESET push button to toggle between PRIMARY and SECONDARY. In NSM, the AUTO switch sets the initial active port on power up. Up is SECONDARY and down is PRIMARY. Note that the SW LED remains off in the Network Select Mode.
3 Set the MDI-II/MDI-X Switch. For every twisted-pair port, a switch is used to implement the transmit and receive crossover functionality. The switch is positioned just behind its associated RJ-45 connector. On TX-FX modules, the switch is hidden from direct view by the smaller daughter circuit board. Use a small paperclip for easy access.
The switch connects the transmit and receive signal pairs in either straight through or crossover configurations. The signal routing is as follows: Switch Position Connection TX+ to TX+ TX- to TXRX+ to RX+ RX- to RXTX+ to RX+ TX- to RXRX+ to TX+ RX- to TX- When setting the MDI-II/MDI-X switch, observe the positioning of the following symbols: • the parallel symbol (II) indicates a straight through or parallel connection (default) • the cross symbol (X) indicates a crossover connection.
4 Install the “redundant twister” Module. “redundant twister” modules offer the ease of plug-and-play installation and are hot-swappable. All modules must be firmly secured to the chassis before network connections are made. Follow the simple steps outlined below to install the “redundant twister” module: NOTE: Each TX-FX module uses two slots in the chassis. The TX-TX module uses only one. • Grasp the module by the front panel as shown.
5 Connect to the Network. A total of three connections must be made on the front panel when connecting the “redundant twister” module to the network. Be sure that all modules are firmly secured to the chassis before making network connections. • Connect to the MAIN port.
The LH7403C-MMSC-R2 and LH7403C-MMST-R2 “redundant twister” modules provide two sets of 100BASE-FX multimode SC or ST connectors that support a maximum segment length of up to 2km. The LH7404C-SMSC-R2 and LH7403C-SMST-R2 “redundant twister” modules provide two sets of 100BASE-FX singlemode SC or ST connectors that suppport a maximum segment length of up to 15km.
User Guide This section contains more detailed user information regarding the operating features of your “redundant twister” module. Module LED Operation Several LEDs are visible from the front panel. These include SW, PWR, SECONDARY, LK and AT LEDs. There are separate LK and AT LEDs for each of the three ports (MAIN, PRIMARY and SECONDARY).
Reset Push Button A small RESET push button is located on the front panel of the “redundant twister” Module. When used in conjunction with the module’s SW and SECONDARY LEDs, and the AUTO DIP switch setting, this push button allows a network administrator to effectively maintain or troubleshoot a PRIMARY link connection. Because of its small size and recessed placement within the front panel, press the RESET push button with the tip of a pointed object.
Link Loss Carry Forward (LLCF) The “redundant twister” Modules have been designed with an LLCF function for troubleshooting a remote connection. The modules are shipped with the LLCF disabled. When LLCF is enabled, the fiber optic ports as well as the twisted-pair ports on the module do not transmit a link signal until they receive a link signal from the opposite port.
Topology Solution Server Cluster “A” Server Cluster “B” Servers with 100Mbps NICs “twister” Media Converter 7000 with “redundant twister” Modules Secondary F/O Link “B” Primary F/O Link “A” Secondary F/O Link “A” Primary F/O Link “B” 100Mbps F/O Switch Enterprise Switch 18 User Guide 100Mbps F/O Switch
Technical Specifications Data Rate LE7402C Half-duplex ________________________________ 10Mbps Full-duplex _________________________________ 20Mbps LH740XC Half-duplex _______________________________ 100Mbps Full-duplex ________________________________ 200Mbps 10Mbps Twisted-Pair Interface Connector _____________________________ Shielded RJ-45, 8-pin jack Impedance ___________________________________ 100 Ohms nominal Signal Level Output (differential) _______________________ 2.2 to 2.
Power Requirements LE7402C-TX _____________________________________ .5Amps max. LH7402C-TX-R2 ____________________ 5 VDC @ 0.750Amps, 3.75W LH740XC _____________________________ 5 VDC @ 1.3Amps, 6.5W Environmental Operating Temperature _________________________________ 0 – 50° C Storage Temperature _________________________________ -30 – 70° C Operating Humidity _____________________ 5% – 95% non-condensing Weight _______________________________________________ 5 oz.
Product Safety, EMC and Compliance Statements This equipment complies with the following requirements: • UL • CSA • EN60950 (safety) • FCC Part 15, Class A • EN55022 Class A (emissions) • EN50082-1 (immunity) • IEEE 802.3/802.3u • IEC 825-1 Classification Class 1 Laser Product Radio Frequency Interference Statements FCC Radio Frequency Interference Statement This equipment has been tested and found to comply with the limits for Class A digital device, pursuant to Part 15 of FCC Rules.
Electrical Safety Statement Normas Oficiales Mexicanas (NOM) INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura. 3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de operación deben ser respetadas. 4. Todas las instrucciones de operación y uso deben ser seguidas. 5.
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo descrito en el instructivo de operación, o como se indique en el aparato. 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada. 13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato. 14.
© Copyright 1999. Black Box Corporation. All rights reserved.
