GarrettCom DS8016 Manual De Usuario

Magnum DS8016 Dual-Speed Stackable Hubs        Installation and User Guide (07/06) 

 

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All sixteen RJ-45 ports independently support auto-negotiation for shared 

10BASE-T and 100BASE-TX modes.  When the ‘100’ LED is flashing, it means that the 

corresponding port is sending out auto-negotiation pulses on that port. When a LINK 

connection is made, the other device should respond and both sides should agree to the speed 

being signaled.  The device connected, depending on what it is, will either signal that it is 

capable of 10Mb or 100Mb speeds.  Silence means the port defaults to 10Mb.   

 

When the ‘100’ LED is steady ON, the port has auto-negotiated for 100Mb 

operation and is processing packets at 100Mb/s,  When it is OFF, it is at 10Mb/s.  If a 

DS8016 port is connected to a  non-negotiating device, it will default to 10Mb speed.  Since 

Magnum DS8016s are hubs, they always operate in the shared or half-duplex mode on all 

ports.  

 

General information - 

 the devices at both ends of the cable are capable of operation at either 10Mb or 

100Mb speed, and can send/receive auto-negotiation pulses, and . . .  

 --   when the second of the two connected devices is powered up*, i.e., when 

LINK is established for a port, or 

--   when LINK is re-established on a port after being lost temporarily. 

 

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NOTE  –  some NIC cards only auto-negotiate when the computer system that they are 

in is powered up.  These are exceptions to the “negotiate at LINK – enabled” rule 

above, but may be occasionally encountered.