611Nortel WLAN Security Switch 2300 Series Configuration GuideGlossary3DES A three-round application of the Data Encryption Standard (DES) that uses a 168-bit encryption key.See also DES.802.1D The IEEE LAN specification for the operation of media access control (MAC) bridges.802.1p An IEEE LAN standard method for classifying packets in bridged virtual LANs (VLANs). As partof 802.1Q protocol, 802.1p defines a field in the VLAN tag of a frame header that provides class-of-service(CoS) definitions at Layer 2. See also 802.1Q.802.1Q The IEEE LAN standard that defines a protocol for filtering and forwarding services at Layer 2.Ethernet frames are directed by means of a tag inserted into the frame header. A virtual LAN (VLAN)identifier (VID) field in the tag identifies the VLAN with which the frame is associated.802.1X The primary IEEE standard for port-based network access control. The 802.1X standard, which isbased on the Extensible Authentication Protocol (EAP), provides an authentication framework that supports avariety of methods for authenticating and authorizing network access for wired or wireless users. See alsoEAP; EAP-TLS; PEAP; TLS; TTLS.802.2 An IEEE LAN specification that defines the logical link control (LLC) sublayer, the upper portion ofthe Data Link layer. LLC encapsulation can be used by any lower-layer LAN technology. Compare 802.3;Ethernet II.802.3 An IEEE LAN specification for a Carrier Sense Multiple Access with Collision Detection(CSMA-CD) network, a type of network related to Ethernet. In general, 802.3 specifies the physical media andthe working characteristics of LANs. An 802.3 frame uses source and destination media access control (MAC)addresses to identify its originator and receiver (or receivers). Compare 802.2; Ethernet II.802.3z An extension to the IEEE 802.3 LAN specification, describing gigabit Ethernet (1000 Mbps)transmission. The extension includes specifications for the media access control (MAC), physical layer,repeater, and management characteristics of gigabit Ethernet.802.11 An IEEE LAN specification that defines the mobile (wireless) network access link layer. Thespecification includes the 802.11 media access control (MAC) sublayer of the Data Link layer, and twosublayers of the Physical (PHY) layer—a frequency-hopping spread-spectrum (FHSS) physical layer and adirect-sequence spread-spectrum (DSSS) link layer. Later additions to 802.11 include additional physicallayers. See also 802.11a; 802.11b; 802.11g; 802.11i.802.11a A supplement to the IEEE 802.11 wireless LAN (WLAN) specification, describing transmissionthrough the Physical layer (PHY) based on orthogonal frequency division multiplexing (OFDM), at afrequency of 5 GHz and data rates of up to 54 Mbps.802.11b A supplement to the IEEE 802.11 wireless LAN (WLAN) specification, describing transmissionthrough the Physical layer (PHY) based on direct-sequence spread-spectrum (DSSS), at a frequency of2.4 GHz and data rates of up to 11 Mbps.
