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Resumen del manual
Moreover, you can easily extend your LAN by making a high-speed connection to a collapsed backbone device (e.g., a switch or a router). Stand-Alone Network - These CheetaHubs have an internal switching function that can be used in a simple stand-alone configuration as illustrated on the next page. Regardless of whether you are making 10 or 100 Mbps connections with twisted-pair cable, limit the distance for each cable to 100 meters (328 feet). Cascading Hubs with the Daisy-Chain Port - You can easily connect to another hub or switch via the RJ-45 MDI daisy-chain port on the front panel. The figure on the next page shows a sample configuration. When connecting to 10Mbps Ethernet, the maximum number of hubs that can be cascaded is four (with up to 100 meters or 328 feet of cable allowed between each hub). However, when connecting to another Fast Ethernet hub, the number of hubs that can be cascaded is limited to two, and the total network span allowed is only 205 meters (672 feet). Quick Installation Guide 7 7 Connecting to a Network Backbone - You can easily connect to a collapsed backbone switch via the RJ-45 MDI daisy-chain port on the front panel. Because a switch breaks up the collision domain, it can be used to connect multiple CheetaHubs. Product Specifications Repeater Criteria Access Method CSMA/CD, 10 Mbps or 100 Mbps Standards Conformance IEEE 802.3 10BASE-T, IEEE 802.3u 100BASE-TX Communication Rate 10/100 Mbps on all RJ-45 ports Media Supported 10BASE-T - 100. Category 3,4,5 twisted-pair 100BASE-TX - 100. Category 5 twisted-pair Number of Ports 8 RJ-45 ports (EH3008P), 16 RJ-45 ports (EH3016P) All models have 1 MDI daisy-chain port Indicator Panel LEDs for monitoring port speed, port link, port partition, collision, utilization, and power Dimensions 273 x 166 x 43 mm (10.75 x 6.54 x 1.69 in) Weight EH3008P: 1.38 kg (3.042 lbs) EH3016P: 1.49 kg (3.285 lbs) Input Power Full range power input: 100 to 240VAC, 50 to 60 Hz, 0.3A Power Consumption 20 Watts Heat Dissipation 68.2 BTU/hr CheetaHub Power-3008P/3016P Maximum Current 0.3ARMS max. @ 110VAC, 0.1ARMS max. @ 240VAC Temperature 0°C to 50°C (32 to 122°F) Standard Operating, -40~70°C (-40~158°F) Storage Humidity 5% to 95% (Noncondensing) Certification CE Mark Emissions FCC Class A, VCCI Class A, EN55022 (CISPR22) Class A Immunity IEC 1000-4-2/3/4/6 Safety CSA/NRTL (C22.2.950, UL 1950), TUV/GS (EN60950) IEC60950 (CB Report) Internal Switching Criteria Network Bridging Function Filtering, forwarding and learning Switching Method Store-and-forward Address Table 1.7K entries Queue Buffer 240K bytes per unit Filtering Rate Line speed Forwarding Rate Line speed Troubleshooting Diagnosing Hub Indicators The hub can be easily monitored through panel indicators to assist the network manager in identifying problems. This section describes common problems you may encounter and possible solutions. Symptom: Power indicator does not light up (green) after power on. Cause: Defective power outlet, power cord, or internal power supply. Solution: Check the power outlet by plugging in another device that is functioning properly. Check the power cord with another device. If these measures fail to resolve the problem, have the unit's power supply replaced by a qualified Accton distributor. Symptom: Link indicator does not light up after making a connection. Cause: Network interface (e.g., a network adapter card on the attached device), network cable, or hub port is defective. Solution: Verify that the hub and attached device are powered on. Be sure the cable is plugged into both the hub and corresponding device. Verify that the proper cable type is used and its length does not exceed specified limits. Check the adapter on the attached device and cable connections for possible defects. Replace the defective adapter or cable if necessary. Quick Installation Guide Power and Cooling Problems If the Power indicator does not turn on when the power cord is plugged in, you may have a problem with the power outlet, power cord, or internal power supply as explained in the previous section. However, if the unit powers off after running for a while, check for loose power connections, power losses or surges at the power outlet, and verify that the fan on back of the unit is unobstructed and running prior to shutdown. If you still cannot isolate the problem, then the internal power supply may be defective. In this case, contact your Accton distributor for assistance. Cabling and Adapters If the Link indicator fails to light when you connect a device to the hub, check the following items: • Be sure the twisted-pair cable is properly attached to the connected device and the hub. Verify that the media connector snaps into place when attached. • See if your cable is functioning properly by using it for another port and attached device that displays valid indications when connected to the network. • Check the length of each twisted-pair cable to be sure it does not exceed 100 meters (328 ...
Otros modelos de este manual:Equipo de red - CHEETA 3008P (919.86 kb)