Professional Access Point
Administrator Guide
Glossary - 308
D
DCF
The
Distribution Control Function
is a component of the IEEE 802.11e Quality of Service (QoS) technology
standard. The DCF coordinates channel access among multiple stations on a wireless network by
controlling wait times for channel access. Wait times are determined by a random backoff timer which is
configurable by defining minimum and maximum contention windows. See also
EDCF
.
DHCP
The
Dynamic Host Configuration Protocol
(DHCP) is a protocol specifying how a central server can
dynamically provide network configuration information to clients. A DHCP server offers a lease (for a pre-
configured period of time—see
Lease Time
) to the client system. The information supplied includes the
client's IP addresses and netmask plus the address of its
DNS
servers and
Gateway
.
DNS
The
Domain Name Service
(DNS) is a general-purpose query service used for translating
fully-qualified
names
into Internet addresses. A fully-qualified name consists of the hostname of a system plus its domain
name. For example,
www
is the host name of a Web server and
www.usr.com
is the fully-qualified name of
that server. DNS translates the domain name
www.usr.com
to an IP address, for example
66.93.138.219
.
A
domain name
identifies one or more IP addresses. Conversely, an IP address may map to more than
one domain name.
A domain name has a suffix that indicates which
top level domain
(TLD) it belongs to. Every country has its
own top-level domain, for example
.de
for Germany,
.fr
for France,
.jp
for Japan,
.tw
for Taiwan,
.uk
for
the United Kingdom,
.us
for the U.S.A., and so on. There are also
.com
for commercial bodies,
.edu
for
educational institutions,
.net
for network operators, and
.org
for other organizations as well as
.gov
for
the U. S. government and
.mil
for its armed services.
DOM
The
Document Object Model
(DOM) is an interface that allows programs and scripts to dynamically access
and update the content, structure, and style of documents. The DOM allows you to model the objects in an
HTML or XML document (text, links, , tables), defining the attributes of each object and how they can be
manipulated.
Further details about the DOM can be found at the
W3C
.
DTIM
The
Delivery Traffic Information Map
(DTIM) message is an element included in some
Beacon
frames. It
indicates which stations, currently sleeping in low-power mode, have data buffered on the
Access Point
awaiting pick-up. Part of the DTIM message indicates how frequently stations must check for buffered
data.
Dynamic IP Address
See
IP Address
.
Summary of Contents for Instant802 APSDK
Page 1: ...Professional Access Point Administrator Guide R46 1224 00 rev 2 0 07 06...
Page 2: ......
Page 4: ...Professional Access Point Administrator Guide iv...
Page 8: ...Professional Access Point Administrator Guide viii...
Page 42: ...Professional Access Point Administrator Guide Basic Settings 42...
Page 52: ...Professional Access Point Administrator Guide Access Points 52...
Page 58: ...Professional Access Point Administrator Guide User Management 58...
Page 62: ...Professional Access Point Administrator Guide Sessions 62...
Page 70: ...Professional Access Point Administrator Guide Channel Management 70...
Page 88: ...Professional Access Point Administrator Guide Neighboring Access Points 88...
Page 96: ...Professional Access Point Administrator Guide Ethernet Wired Settings 96...
Page 120: ...Professional Access Point Administrator Guide Security 120...
Page 128: ...Professional Access Point Administrator Guide Virtual Wireless Networks 128...
Page 134: ...Professional Access Point Administrator Guide Radio 134...
Page 138: ...Professional Access Point Administrator Guide MAC Filtering 138...
Page 152: ...Professional Access Point Administrator Guide Quality of Service 152...
Page 160: ...Professional Access Point Administrator Guide Wireless Distribution System 160...
Page 164: ...Professional Access Point Administrator Guide Time Protocol 164...
Page 170: ...Professional Access Point Administrator Guide SNMP 170...
Page 290: ...Professional Access Point Administrator Guide Configuration Troubleshooting 290...
Page 298: ...Professional Access Point Administrator Guide Regulatory Information 298...
Page 328: ...Professional Access Point Administrator Guide Index 328...
