Glossary
334
BogoMips
BogoMips (from "bogus" and MIPS). Unscientific
measurement of CPU speed made by the Linux kernel when
it boots to calibrate an internal busy-loop.
Bonding (Linux)
Ability to detect communication failure transparently, and
switch from one LAN connection to another. The Linux
bonding driver has the ability to detect link failure and
reroute network traffic around a failed link in a manner
transparent to the application. It also has the ability (with
certain network switches) to aggregate network traffic in all
working links to achieve higher throughput. The bonding
driver accomplishes this by enslaving all of the Ethernet ports
in the bond to the same Ethernet MAC address, which
ensures the proper routing of packets across the links.
Boot
To start a computer so that it is ready to run programs for the
user. A PC can be booted either by turning its power on,
(Cold Boot) or by pressing Ctrl+Alt+Del (Warm Boot).
Break Signal
A break signal is a logical zero on a TXD or RXD lines for a
period of time, usually 250 to 500 milliseconds. Normally a
receive or transmit data signal stays at the mark (on=1)
voltage until the next character is transferred. A Break is
sometimes used to reset the communications line or change
the operating mode of communications hardware. Breaks at a
serial console port are interpreted by Sun servers as a signal
to suspend operation and switch to monitor mode.
Checksum
A computed value which depends on the contents of a block
of data and which is transmitted or stored along with the data
in order to detect corruption of the data. The receiving system
recomputes the checksum based upon the received data and
compares this value with the one sent with the data. If the two
values are the same, the receiver has some confidence that the
data was received correctly.
CIDR Notation
Classless Inter Domain Routing (CIDR) is a method for
Содержание Advanced Console Server
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