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RJ-45 Ports
RJ-45 ports are AutoSensing ports. When you insert a cable into an RJ-45 port, the switch
automatically ascertains the maximum speed (10, 100, or 1000 Mbps) and duplex mode
(half-duplex or full-duplex) of the attached device. All ports support only an unshielded
twisted-pair (UTP) cable terminated with an 8-pin RJ-45 plug.
To simplify the procedure for attaching devices, all RJ-45 ports support Auto Uplink. This
technology allows attaching devices to the RJ-45 ports with either straight-through or
crossover cables. When you insert a cable into the switch's RJ-45 port, the switch
automatically:
•
Senses whether the cable is a straight-through or crossover cable.
•
Determines whether the link to the attached device requires a "normal" connection (such
as when you are connecting the port to a computer) or an uplink connection (such as
when you are connecting the port to a router, switch, or hub).
•
Automatically configures the RJ-45 port to enable communications with the attached
device. The Auto Uplink technology compensates for setting uplink connections, while
eliminating concern about whether to use crossover or straight-through cables when you
attach devices.
SFP+ Ports
To enable you to have fiber connections on your network, four SFP+ ports (49 through 52)
accommodate standard 1000M and 10G SFP+ transceiver modules, which are sold
separately.
The SFP+ ports can alternatively be used to connect the switch to a stack. Up to two ports
(ports 51 and 52) can be used at a time as stacking ports.
Reset Button
The smart switch has a Reset button on the front panel to allow you to manually reboot the
switch. This action is equivalent to powering the unit off and back on. The last saved
configuration is loaded into the switch as it resets. To use the Reset button, insert a device
such as a straightened paper clip into the opening to press the recessed button. The front
panel LEDs turn off and light again as the switch performs its power-on self-test (POST).
Factory Defaults Button
The smart switch has a Factory Defaults button on the front panel so that you can remove the
current configuration and return the device to its factory settings. When you press the Factory
Defaults button, all settings including the password, VLAN settings, and port configurations
are removed. To use the Factory Defaults button, insert a device such as a straightened
paper clip into the opening to press the recessed button for over 2 seconds.
Note:
Switches that are part of stack will retain the stacking configuration.
GS728TXS/GS752TXS Smart Switch
17
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Troubleshooting
