HP ProCurve 7000dl Series Basic Management And Configuration Manual page 870

Appendix B: Glossary
WAN A high-speed network within a wide geographical area (usually larger than a
WFQ Weighted Fair Queue. A queuing mechanism where the administrator is able
Wildcard Bits Wildcard bits use reverse logic to allow the user to specify bits within an IP
WRED Weighted Random Early Discard. A quality of service congestion-avoidance
X-Authentication Between phase one and phase two of IKE negotiations, X-authentication is
xDSL X-type DSL. A term that collectively refers to the different types of DSL.
X.21 A type of physical and electrical interface that uses two types of circuits:
X509 An ITU-T standard for defining digital certificates. X509 is the signing system
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W
city or metropolitan area) that shares data, programs, or equipment.
to create multiple queues for different traffic classes and assign a "weight"
value to each queue in proportion to its traffic priority level. See also QoS.
address that must match (0) and that do not need to match (1).
mechanism. WRED begins to discard packets before the queue reaches full
capacity in order to slow TCP traffic. Packets to be dropped are chosen
according to assigned traffic classes and priorities, and the dropped packets
signal the TCP server to slow the transmission rate. See also QoS.
X
the process of authenticating the host that is originating the transmission to
the network. IKE normally authenticates only the WAN gateway.
balanced (X.27N.1 1) and unbalanced (X.26N.10). CCITT X.21 uses the DB-15
connector. The physical interface between the DTE and the local PTT-
supplied DCE is defined in ITU-T recommendation X.21. The DCE provides a
full-duplex, bit-serial, synchronous transmission path between the DTE and
the local service provider. It can operate at data rates from 600 bps to 64 Kbps.
used for SSL. See also PKI.