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AlterPath Manager E2000 Manual Glossary-5
side signals the sending side to stop until the buffer has space
again. Between hardware (such as your modem and your
computer), hardware flow control is used; between modems,
software flow control is used.
Hot-Swap Ability to remove and add hardware to a computer system
without powering off the system.
ICMP Internet Control Message Protocol is an Internet protocol
sent in response to errors in TCP/IP messages. It is an error
reporting protocol between a host and a gateway. ICMP uses
Internet Protocol (IP) datagrams (or packets), but the
messages are processed by the IP software and are not
directly apparent to the application user.
In-band Network In a computer network, when the management data is
Management accessed using the same network that carries the data, this is
called “in-band management.”
IP Address A 32-bit address assigned to hosts using TCP/IP. It belongs to
one of five classes (A-E) and is expressed as 4 octets
separated by periods formatted as dotted decimals.
Each address has a network number, an optional sub network
number and a host number. The first two numbers are used
for routing, while the host number addresses an individual
host within the network or sub network. A subnet mask is
used to extract network and sub network information from
the IP address.
ISDN A set of communications standards allowing a single wire or
optical fibre to carry voice, digital network services and
video. ISDN is intended to eventually replace the plain old
telephone system.
Kerberos Kerberos was created by MIT as a solution to network
security problems. The Kerberos protocol uses strong
cryptography so that a client can prove its identity to a server
(and vice versa) across an insecure network connection.