User guide

Glossary 461
Cascade Switch
An analog KVM switch that is connected to a DSR switch port or DSRIQ. A cascade switch
expands the number of connections allowed on a DSR switch if the DSR switch supports the
cascade protocol.
Certificate Authentication
Certificate authentication is the process of authenticating with a digital certificate.
CPS Appliance
An Avocent managed appliance that provides a Telnet server for accessing serially attached
devices over a standard TCP/IP connection. Model numbers include the CPS800, CPS1600,
CPS810, CPS1610 and CPS1620 appliance.
Database Replication
Database replication is the process of distributing and keeping in sync the same database to all
DSView Servers in a DSView System. Database replication ensures that all database changes made
at the Hub DSView Server or at any of the Spoke DSView Servers are replicated to all DSView
Servers in the DSView System.
Dynamic Host Configuration Protocol (DHCP)
An Internet protocol used to automate the configuration of computers using TCP/IP. DHCP can be
used to do the following:
• Automatically assign IP addresses.
• Deliver TCP/IP stack configuration parameters, such as the subnet mask and default router.
• Provide other configuration information, such as printer addresses.
Digital Certificate
An attachment to an electronic message used for security purposes. The most common use of a
digital certificate is to verify that a user sending a message is who they claim to be, and to provide
the receiver with the means to encode a reply.
An individual wishing to send an encrypted message applies for a digital certificate from a
Certificate Authority (CA). The CA issues an encrypted digital certificate containing the applicant's
public key and a variety of other identification information. The CA makes its own public key
readily available through print publicity or perhaps on the Internet.
The recipient of an encrypted message uses the CA's public key to decode the digital certificate
attached to the message, verifies it as issued by the CA and then obtains the sender's public key and
identification information held within the certificate. With this information, the recipient can send
an encrypted reply.
The most widely used standard for digital certificates is X.509.