Trendnet TE-2620 [7/9] Bmc ports

Cascading Hubs Through BMC Ports Diagnostic LEDs The diagnostic LEDs are located on the front of the hub Alternatively h use the BNC ports tn cormect the hubs together In Chis connect onh each of Che cascaded hubs is counted as Otte node toward Ehe maximum 30 nodesallowed on a thin coax al segment Make sore you leave at least 0 5 meter 2 feet of thin coaxial cable between two hubs One Jabber LED for all ports This LED Lums ON when the network encounters network packets that exceed the maximum length allowed A malfunctioning network interface adapter on the network may well he a cause of th problem C IHsifm One Collision LED for ah pom The entire network V nited by any bridges is considered as one g ngle contention bus When this LED blinks packet collisions are occurring on the contention bus A collision occurs when two nodes attempt to transmit packets at the same time Both nodes should then automat zaily backoff and retry the transmission This tr al and snor process is repealed until there is no collision Excessive blinking of this LED means traffic on the network is he vy or there ate two many small packet traveling on the network You may then consider adding a bridge or use a dumb hub to increase the bandwidth reduce coll sions and increase network throughput Hub stack Connects to Thin Coaxial Segment One Link Rx for each twisted pair port This LED turns ON when the port has established a link with the connected node This LED blinks when the port is receivi ng data If the port i s connected but this LED is OFE check to see 1 if he power of both he hub and the connected node is ON 2 if he connection is loose 3 if the cable is 3

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