Appendix A
A.1 Glossary of Terms
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802.11u
802.11u is an amendment to the IEEE 802.11 WLAN standards for connec-
tion to external networks using common wireless devices such as
smartphones and tablet PCs. The 802.11u protocol provides wireless clients
with a streamlined mechanism to discover and authenticate to suitable net-
works, and allows mobile users to roam between partner networks without
additional authentication. An 802.11u-capable device supports the Passpoint
technology from the Wi-Fi Alliance Hotspot 2.0 R2 Specification that simpli-
fies and automates access to public Wi-Fi.
802.11v
802.11v is an IEEE standard that allows client devices to exchange infor-
mation about the network topology and RF environment. This information is
used for assigning best available radio resources for the client devices to
provide seamless connectivity.
802.1Q
802.1Q is an IEEE standard that enables the use of VLANs on an Ethernet
network. 802.1Q supports VLAN tagging.
802.1X
802.1X is an IEEE standard for port-based network access control designed
to enhance 802.11 WLAN security. 802.1X provides an authentication
framework that allows a user to be authenticated by a central authority.
802.3af
802.3af is an IEEE standard for Power over Ethernet (PoE) version that sup-
plies up to 15.4W of DC power. See PoE.
802.3at
802.3at is an IEEE standard for PoE version that supplies up to 25.5W of DC
power. See PoE+.
AAA
Authentication, Authorization, and Accounting. AAA is a security framework
to authenticate users, authorize the type of access based on user creden-
tials, and record authentication events and information about the network
access and network resource consumption.
ABR
Area Border Router. ABR is used for establishing connection between the
backbone networks and the Open Shortest Path First (OSPF) areas. ABR is
located near the border of one or more OSPF areas.
AC
Access Category. As per the IEEE 802.11e standards, AC refers to various
levels of traffic prioritization in Enhanced Distributed Channel Access (EDCA)
operation mode. The WLAN applications prioritize traffic based on the Back-
ground, Best Effort, Video, and Voice access categories. AC can also refer to
Alternating Current, a form of electric energy that flows when the appliances
are plugged to a wall socket.
ACC
Advanced Cellular Coexistence. The ACC feature in APs enable WLANs to
perform at peak efficiency by minimizing interference from 3G/4G/LTE net-
works, distributed antenna systems, and commercial small cell/femtocell
equipment.
Access-Accept Response from the RADIUS server indicating successful authentication and
containing authorization information.
Access-Reject Response from RADIUS server indicating that a user is not authorized.
Access-
Request
RADIUS packet sent to a RADIUS server requesting authorization.
Accounting-
Request
RADIUS packet type sent to a RADIUS server containing accounting sum-
mary information.
Accounting-
Response
RADIUS packet sent by the RADIUS server to acknowledge receipt of an
Accounting-Request.
