D-Link DE-1824EI User Guide - Page 19

Master, Console, FCS/Align, The FCS Frame Check Sequence/Align indicator lights amber

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Page 19 highlights

10BASE-T Stackable Hubs ◊ Manual Partition The indicator of a port lights amber continually when the port is manually partitioned. Manually partitioning a port has the same effect as automatic partitioning, except that you must also manually re-enable it. You can choose to manually partition a port even if there is nothing wrong with it, for example to prevent a certain device from accessing the network or to reduce network traffic. No incoming packet transmission can occur on a manually partitioned port. Ports can be partitioned and re-enabled using an SNMP-based network management system, or using the console menu interface. ♦ Master (manageable models only) The Master indicator lights to indicate that the master hub is serving as an active master. ♦ Console (manageable models only) The master hub's Console or Out-Of-Band indicator will light to indicate whether the hub's RS-232 console port is being used for the console interface or for out-of-band network management using the SLIP protocol. The mode of the console port may be set using the console interface or using an SNMP-based network management system. ♦ FCS/Align (manageable models only) The FCS (Frame Check Sequence)/Align indicator lights amber to indicate that data packets have been corrupted during transmission. An FCS error occurs when a data packet fails an internal consistency check. An alignment error occurs when the bits in a packet don't add up to a whole number of bytes. External Features and Indicators 2-5

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10BASE-T Stackable Hubs
◊
Manual Partition
The indicator of a port lights amber continually when the port is
manually partitioned.
Manually partitioning a port has the same effect as automatic
partitioning, except that you must also manually re-enable it. You can
choose to manually partition a port even if there is nothing wrong
with it, for example to prevent a certain device from accessing the
network or to reduce network traffic.
No incoming packet transmission can occur on a manually partitioned
port. Ports can be partitioned and re-enabled using an SNMP-based
network management system, or using the console menu interface.
♦
Master
(manageable models only)
The Master indicator lights to indicate that the master hub is serving as an
active master.
♦
Console
(manageable models only)
The master hub's Console or Out-Of-Band indicator will light to indicate
whether the hub's RS-232 console port is being used for the console
interface or for out-of-band network management using the SLIP
protocol. The mode of the console port may be set using the console
interface or using an SNMP-based network management system.
♦
FCS/Align
(manageable models only)
The FCS (Frame Check Sequence)/Align indicator lights amber to
indicate that data packets have been corrupted during transmission. An
FCS error occurs when a data packet fails an internal consistency check.
An alignment error occurs when the bits in a packet don't add up to a
whole number of bytes.
External Features and Indicators
2-5