User manual LEGRAND 845 52

[. . . ] Foundry Networks, BigIron, FastIron, IronView, JetCore, NetIron, ServerIron, TurboIron, IronWare, EdgeIron, IronPoint, the Iron family of marks and the Foundry Logo are trademarks or registered trademarks of Foundry Networks, Inc. in the United States and other countries. Compliances FCC - Class A 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 the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. [. . . ] Installing an Optional Xenpak Transceiver EIF24G S/48GS 10G Xe npak Ex pansion Module Diag Link/Acti vity To install an optional transceiver into the already installed module, do the following: 1. Slide the transceiver in to the slot on the front of the module until it it firmly engages with the slot connector. Fasten the screws on the front panel until the transceiver cannot be easily removed. The switch does not need to be powered off before installing or removing a transceiver. However, always first disconnect the network cable before removing a transceiver. Stacking Switches All units in the stack must be connected via stacking cable. You can connect units in a simple cascade configuration, connecting Up ports to Down ports, from the top unit to the bottom unit. Using this "line" topology, if any link or unit in the stack fails, the stack is split and two separate segments are formed. The Stack Link LEDs on the units that are disconnected flash to indicate that the stack link between them is not functioning. When a stack link failure occurs, the stack reboots and a Master unit is selected within each of the two stack segments. The Master unit will be either the unit with the Master button depressed or the unit with the lowest MAC address if the Master button is not depressed on any unit. When the stack reboots and resumes operations, note that the IP address will be the same for both of the stack segments. However, after topology discovery completes and the system reinitiated, the stack will still operate as a single stack. In a non-looped stack (line topology), there is a single stack cable connection between each switch that carries two-way communications across the stack. The failure of one stack unit or cable will cause the stack to be broken in two. The Stack link LED on the unit that is no longer receiving traffic from the next unit up in the stack will begin flashing to indicate that the stack link is broken. When the stack fails, a Master unit is selected from the two stack segments, either the unit with the Master button depressed, or the unit with the lowest MAC address if the Master button is not depressed on any unit. However, note that the IP address will be the same for both of the stack segments. To resolve the conflicting IP addresses, you should manually replace the failed link or unit as soon as possible. Up Up Dow n Dow n Up Dow Up Dow n n Up Up Dow n Dow n Up Up Dow n Dow n Looped topology stack Non-looped topology stack To connect up to eight switches in a stack, perform the following steps: 1. Plug one end of the stack cable (ordered separately) in the Down (right) port of the top unit. Plug the other end of the stack cable into the Up (left) port of the next unit. Form a simple chain starting at the Down port on the top unit and ending at the Up port on the bottom unit (stacking up to 8 units). (Optional) To form a wrap-around topology, plug one end of a stack cable into the Down port on the bottom unit and the other end into the Up port on the top unit. March 2006 © 2006 Foundry Networks, Inc. 9-9 Foundry EdgeIron Family Installation Guide Connecting to a Power Source To connect a device to a power source: 1. [. . . ] Collision A condition in which packets transmitted over the cable interfere with each other. CSMA/CD CSMA/CD (Carrier Sense Multiple Access/Collision Detect) is the communication method employed by Ethernet, Fast Ethernet, or Gigabit Ethernet. End Station A workstation, server, or other device that does not forward traffic. Ethernet A network communication system developed and standardized by DEC, Intel, and Xerox, using baseband transmission, CSMA/CD access, logical bus topology, and coaxial cable. [. . . ]