Glossary - 3Com PS Hub 40 User Manual

10BASE-T
active segment
switch
ageing
bandwidth
baud rate
BOOTP
bridge mode
broadcast
broadcast storm
cascaded segments
console port
G
LOSSARY
The IEEE 802.3 specification for Ethernet over Twisted Pair (TP) cabling.
In a stack with multiple PS Hub 50 units, only one segment switch can
be active (called the active segment switch), the other segment
switches are disabled. See segment switch.
The process of removing unused learnt (non-permanent) addresses from
the switch database.
Information capacity, measured in bits per second (bps), that a channel
can transmit. The bandwidth of Ethernet is 10Mbps.
The switching speed of a line. Also known as line speed.
The BOOTP protocol allows you to automatically map an IP address to a
given MAC address each time a device is started. In addition, the
protocol can assign the subnet mask and default gateway to a device.
One of the segment switch's operating modes which conforms to the
IEEE 802.1d specification. Refers to the process of forwarding all
packets with unknown addresses to all of the segments (except the
segment that the packet was received from).
A message sent to all destination devices on the network.
Multiple simultaneous broadcasts that typically absorb available
bandwidth and can cause network failure.
The segments that run up and down the stack by the cascade cables,
to which the PS Hubs' internal segments connect (or are isolated from).
The port on the PS Hub accepting a terminal or modem connector. It
changes the parallel arrangement of data within computers to the serial
form used on data transmission links. This port is most often used for
dedicated local management.