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456 Glossary
D
DHCP Client
A device using DHCP to obtain configuration parameters, such as a network address.
DHCP Snooping
DHCP Snooping expands network security by providing firewall security between untrusted interfaces
and DHCP servers.
DSCP
DiffServe Code Point (DSCP). DSCP provides a method of tagging IP packets with QoS priority
information.
Domain
A group of computers and devices on a network that are grouped with common rules and procedures.
DRAC/MC
DRAC/MC. Provides a single point of control for Dell Modular Server System components.
Duplex Mode
Permits simultaneous transmissions and reception of data. There are two different types of duplex mode:
•
Full Duplex Mode
— Permits for bisynchronous communication, for example, a telephone. Two
parties can transmit information at the same time.
•
Half Duplex Mode
— Permits asynchronous communication, for example, a walkie-talkie. Only one
party can transmit information at a time.
Dynamic VLAN Assignment (DVA)
• Allows automatic assignment of users to VLANs during the RADIUS server authentication. When a
user is authenticated by the RADIUS server, the user is automatically joined to the VLAN configured
on the RADIUS server.
E
Egress Ports
Ports from which network traffic is transmitted.
End System
An end user device on a network.
Ethernet
Ethernet is standardized as per IEEE 802.3. Ethernet is the most common implemented LAN standard.
Supports data transfer rates of Mpbs, where 10, 100 or 1000 Mbps is supported.
EWS
Embedded Web Server. Provides device management via a standard web browser. Embedded Web
Servers are used in addition to or in place of a CLI or NMS.