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Фрагмент инструкции
This will ensure that existing nonvolatile port configuration information is applied to the correct physical unit in the stack. Figure 3-5 Connecting a Hub Stack to a Management Unit The maximum number of units in a stack is eight including the Management Unit. If you wish, you can add two Redundant Power Systems to a stack of eight units (seven hubs and one Management Unit, or eight hubs with no other device). ! ® 3Com Corporation Santa Clara, CA Made in USA REFER TO INSTRUCTION MANUAL FOR CORRECT SELECTION OF POWER CORD CAUTION: For continued protection against risk of fire use only with same type and rating of anti-serge fuse. INPUT V A max 5 5.0 +12 2.5 –12 0.2 UP DOWN EXPANSION DC INPUT E D ! ® 3Com Corporation Santa Clara, CA Made in USA REFER TO INSTRUCTION MANUAL FOR CORRECT SELECTION OF POWER CORD CAUTION: For continued protection against risk of fire use only with same type and rating of anti-serge fuse. INPUT V A max 5 5.0 +12 2.5 –12 0.2 UP DOWN EXPANSION DC INPUT E D ! ® 3Com Corporation Santa Clara, CA Made in USA REFER TO INSTRUCTION MANUAL FOR CORRECT SELECTION OF POWER CORD CAUTION: For continued protection against risk of fire use only with same type and rating of anti-serge fuse. INPUT V A max 5 5.0 +12 2.5 –12 0.2 UP DOWN EXPANSION DC INPUT E D ! ® 3Com Corporation Santa Clara, CA Made in USA REFER TO INSTRUCTION MANUAL FOR CORRECT SELECTION OF POWER CORD CAUTION: For continued protection against risk of fire use only with same type and rating of anti-serge fuse. INPUT V A max 5 5.0 +12 2.5 –12 0.2 UP DOWN EXPANSION DC INPUT E D Management Unit ! ® 3Com Corporation Santa Clara, CA Made in USA REFER TO INSTRUCTION MANUAL FOR CORRECT SELECTION OF POWER CORD CAUTION: For continued protection against risk of fire use only with same type and rating of anti-serge fuse. INPUT V A max 5 5.0 +12 2.5 –12 0.2 EXPANSION UP Down DC INPUT 3-6 CHAPTER 3: MAKING FMS 100-TX HUB CONNECTIONS Hub to Backbone You can connect hubs and hub stacks to the network backbone through the transceiver interface module on the rear panel via a bridge, router, or switch, using either Category 5 UTP or fiber cabling. Figure 3-6 shows single and interconnected hubs connected to a network backbone. Figure 3-6 Connecting Hubs to the Network Backbone Using Transceiver Interface Modules Two types of transceiver interface modules are available for connecting the LinkBuilder FMS 100-TX Hub to the LAN. By inserting the appropriate transceiver interface module in the hub’s thirteenth port, you can use either UTP or fiber-optic cabling to connect the hub to various LAN devices. For example, you can connect the LinkBuilder FMS 100-TX Hub to a multiport bridge or switch using the 100-TX module and gain access to a 10BASE-T network. Likewise, by using the 100BASE-FX module, you can attach the hub to a switch that is connected via fiber cabling to the network. (See the next section for a discussion of using the hub to access multisegmented networks.) The required cabling for the two transceiver interface modules is as follows: n 100BASE-TX module: Category 5 two-pair UTP cabling n 100BASE-FX module: two-strand 62.5/125 m multimode fiber cabling Connections to a server or PC from one of the transceiver interface modules require straight-through cabling. Switch, router, or bridge To network backbone Single hub 100 meters maximum ® ® LinkBuilder REPEATER 1x 1x 1x 1x 1x 1x 1x 100BT STATUS 1x 1x 1x 1x 1x 1 2 3 4 5 6 7 8 9 10 11 12 13 ACTIVITY UNIT LINE PARTITION CLS2 3C12345 CLS1 PWR FAN FAIL OVERTEMP COLLISION ® LinkBuilder REPEATER 1x 1x 1x 1x 1x 1x 1x 100BT STATUS 1x 1x 1x 1x 1x 1 2 3 4 5 6 7 8 9 10 11 12 13 ACTIVITY UNIT LINE PARTITION CLS2 3C12345 CLS1 PWR FAN FAIL OVERTEMP COLLISION ® LinkBuilder REPEATER 1x 1x 1x 1x 1x 1x 1x 100BT STATUS 1x 1x 1x 1x 1x 1 2 3 4 5 6 7 8 9 10 11 12 13 ACTIVITY UNIT LINE PARTITION CLS2 3C12345 CLS1 PWR FAN FAIL OVERTEMP COLLISION ® LinkBuilder REPEATER 1x 1x 1x 1x 1x 1x 1x 100BT STATUS 1x 1x 1x 1x 1x 1 2 3 4 5 6 7 8 9 10 11 12 13 ACTIVITY UNIT LINE PARTITION CLS2 3C12345 CLS1 PWR FAN FAIL OVERTEMP COLLISION Interconnected hubs ® LinkBuilder REPEATER 1x 1x 1x 1x 1x 1x 1x 100BT STATUS 1x 1x 1x 1x 1x 1 2 3 4 5 6 7 8 9 10 11 12 13 ACTIVITY UNIT LINE PARTITION CLS2 3C12345 CLS1 PWR FAN FAIL OVERTEMP COLLISION Considerations for Multisegmented Networks 3-7 Considerations for Multisegmented Networks The 100BASE-T technology defined in the IEEE 802.3 standard provides for both homogeneous CSMA/CD 100 Mbps networks and heterogeneous 10/100 Mbps mixed networks. Both network topologies can be supported by connecting various LAN segments using repeaters and switches, bridges, or routers. The LinkBuilder FMS 100-TX Hub supports only the 100 Mbps network topology. Access to 10 Mbps functionality is possible through connections with switches, bridges, or routers that support 10/100 Mbps topologies. Two LAN segments connected by a repeater constitute a single collision domain. LAN segments connected by switches, bridges...