Glossary

 

 

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.

Cluster

A cluster is a group of one or more computers working as a

 

group to execute a certain task. From the user standpoint, a

 

cluster acts as a large computer system.

Console Access Server

A CAS has an Ethernet LAN connection and many RS-232

(CAS)

serial ports. It connects to the console ports of servers and

 

networking equipment and allows convenient and secure

 

access from a single location.

Community

The community name acts as a password and is used to

 

authenticate messages sent between an SNMP client and a

 

router containing an SNMP server. The community name is

 

sent in every packet between the client and the server.

Console

Terminal used to configure network devices at boot (start-up)

 

time. Also used to refer to the keyboard, video and mouse

 

user interface to a server.

Console Port

Most of the equipment in a data center (servers, routers,

 

switches, UPS, PBX, etc.) has a serial console port for out-of-

 

band management purposes.

DHCP

Dynamic Host Configuration Protocol. A protocol for

 

automatic TCP/IP configuration that provides static and

 

dynamic address allocation and management.

 

DHCP enables individual computers on an IP network to

 

extract their configurations from a server (the 'DHCP server')

 

or servers, in particular, servers that have no exact

 

information about the individual computers until they request

 

the information. The overall purpose of this is to reduce the

 

work necessary to administer a large IP network. The most

 

significant piece of information distributed in this manner is

 

the IP address.

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Cyclades ACS48, 2.3.0 user manual Cas, Dhcp