MRV Communications MR2228-S2C Manuale Utente

MR2228-S2C Stackable Fast Ethernet Switch Installation Guide Installation GMMMMMM

6power receptacle is for the AC power cord. The receptacle labeled “RPU” is for the optional Redundant Power Unit (RPU). Features and Benefits Conne

7• Switching table with a total of 8K MAC address entries • Provides store-and-forward switching • Wire-speed filtering and forwarding • Supports flo

8Chapter 2: Network Planning Introduction to Switching A network switch allows simultaneous transmission of multiple packets via non-crossbar switchi

9transceiver. In the figure below, the switch is operating as a collapsed backbone for a small LAN.It is providing dedicated 10 Mbps full-duplex conn

10 Figure 2-2. Network Aggregation Plan Remote Connections with Fiber Cable Fiber Optic Technology allows for longer cabling than any other media typ

11 Figure 2-3. Remote Connections with Fiber Cable Making VLAN Connections This switch supports VLANs which can be used to organize any group of netw

12Figure 2-4. Making VLAN Connections Note: When connecting to a switch that does not support IEEE 802.1Q VLAN tags, Use untagged ports. Application

13Chapter 3: Installing the Switch Selecting a Site Switch units can be mounted in a standard 19-inch equipment rack or on a flat surface. Be sure to

14 Figure 3-1. RJ-45 Connections Equipment Checklist After unpacking this switch, check the contents to be sure you have received all the components.

15Rack Mounting Before rack mounting the switch, pay particular attention to the following factors: • Temperature: Since the temperature within a rac

2 Installation Guide Stackable Fast Ethernet Switch with 24 10BASE-T/100BASE-TX (RJ-45) Ports,2 1000B

163. If installing a single switch only, turn to “Connecting to a Power Source” at the end of this chapter. 4. If installing multiple switches, mount

17Installing an Optional SFP Transceiver Figure 3-5. Installing an SFP Transceiver into a slot To install an SFP transceiver, do the following: 1. C

18reboot. 2. Plug one end of a stack cable into the “Up” (right) port of the top unit. 3. Plug the other end of the stack cable into the “Down” (left

19 Figure 3-7. Power Receptacles 2. Plug the other end of the cable into a grounded, 3-pin socket, AC power source. Note: For International use, you

20 Table 3-1. Serial Cable Wiring Switch’s 9-Pin Serial Port Null Modem PC’s 9-Pin DTE Port 2 RXD (receive data) <---------------------------- 3

21 Chapter 4: Making Network Connections Connecting Network Devices The MR2228-S2C is designed to be connected to 10, 100 or 1000 Mbps network cards

22 Figure 4-1. Making Twisted-Pair Connections 2. If the device is a network card and the switch is in the wiring closet, attach the other end of the

23 Figure 4-2. Network Wiring Connections Fiber Optic SFP Devices An optional Gigabit SFP transceiver (1000BASE-SX, 1000BASE-LX, or 1000BASE-LH) can

24transmitted through the cable and lead to degraded performance on the port. 3. Connect one end of the cable to the LC port on the switch and the ot

25Category 5 cabling for running 1000BASE-T is a simple test of the cable installation to be sure that it complies with the IEEE 802.3ab standards. 1

1Contents Chapter 1: Introduction...1 Overvi

26cables and to record where each cable is connected. Doing so will enable you to easily locate inter-connected devices, isolate faults and change yo

27Appendix A: Troubleshooting Diagnosing Switch Indicators Table A-1. Troubleshooting Chart Symptom Action PWR LED is Off •Check connections b

28Installation Verify that all system components have been properly installed. If one or more components appear to be malfunctioning (such as the pow

29 Appendix B: Cables Twisted-Pair Cable and Pin Assignments Caution: DO NOT plug a phone jack connector into any RJ-45 port. Use only twisted-pair c

30Table B-1. 10/100BASE-TX MDI and MDI-X Port Pinouts Pin MDI Signal Name MDI-X Signal Name 1 Transmit Data plus (TD+) Receive Data plus (RD+) 2

31 1000BASE-T Pin Assignments All 1000BASE-T ports support automatic MDI/MDI-X operation, so you can use straight-through cables for all network conn

32Cable Testing for Existing Category 5 Cable Installed Category 5 cabling must pass tests for Attenuation, Near-End Crosstalk (NEXT), and Far-End Cr

33 Appendix C: Specifications Physical Characteristics Ports 24 10/100BASE-TX, with auto-negotiation Two 10/100/1000BASE-T shared with two SFP transc

34Forwarding Mode Store-and-forward Throughput Wire speed Flow Control Full Duplex: IEEE 802.3x Half Duplex: Back pressure Management Features In-Ban

35IEEE 802.3z specification for Gigabit Ethernet over two strands of 50/125, 62.5/125 or 9/125 micron core fiber cable. 1000BASE-LH Specification for

2Power and Cooling Problems ...27 Installation...

36method and physical layer specifications. IEEE 802.3ab Defines CSMA/CD access method and physical layer specifications for 1000BASE-T Gigabit Ether

37VLAN serves as a logical workgroup with no physical barriers, allowing users to share information and resources as though located on the same LAN.

1Chapter 1: Introduction Overview The MR2228-S2C switch is a stackable Fast Ethernet switch with 24 10BASE-T/100BASE-TX ports and two 1000BASE-T port

2Network Management Options With a comprehensive arrangment of LEDs, the MR2228-S2C provides “at a glance” monitoring of network and port status. The

3Stacking Ports The unit provides two stacking ports that provide a 1 Gbps stack backplane connection. Up to eight switches can be connected together

4 Table 1-1. Port Status LEDs LED Condition Status Fast Ethernet Ports (Ports 1-24) On/Flashing Amber Port has established a valid 10 Mbps network co

5 Table 1-2. System Status LEDs LED Condition Status On Green The unit’s internal power supply is operating normally. On Amber The unit’s internal