HP ProCurve Secure 7000dl Series Basic Management And Configuration Manual page 755

L
LAN Local Area Network. A group of computers and associated devices within a
small geographic area that share a common communications line. The com-
puters also often the resources of a single server or set of servers.
LAPD Link Access Procedure for D-channel. An ISDN Data Link Layer protocol that
operates over the D channel. LAPD provides ISDN call control and setup.
LATA Local Access and Transport Area. A term used in the United States to describe
a geographic area covered by one or more local exchange carriers (LECs).
LBO Line Build Out. The level of attenuation, signal strength, and impedance on a
line. When a signal is sent over a long distance, it can degrade. You can adjust
the LBO on a T1 line to maximize the signal clarity and coherence. On
ProCurve Secure Router, LBO is usually specified by cable length for shorter
connections and by level of attenuation, in decibels, for longer connections.
LCP Link Control Protocol. Part of the PPP suite. LCP frames are used to establish,
negotiate options for, and maintain the link between peers. LCP frames must
successfully establish before peers can exchange PPP frames that encapsulate
actual data. For more information on the PPP LCP, see RFC 1570 (at http://
www.ietf.org/rfc/rfc1570.txt).
LDAP Lightweight Directory Access Protocol. A set of protocols that allow a host to
access and lookup information in information directories. LDAP should even-
tually make it possible for almost any application running on virtually any
computer platform to obtain public directory information such as hosts' email
addresses and public keys. For more information on LDAP, see RFC 2251 (at
http://www.ietf.org/rfc/rfc2251.txt).
LDN Local Directory Number. The number listed in the phone directory. The LDN
is used to establish a dial-up connection, such as an ISDN connection.
LEC Local Exchange Carrier. The term for a public telephone company in the
United States that provides local service. The LEC can be either one of the
Bell operating companies or an independent company.
LED Light Emitting Diode. A light, often mounted on the front of a device and used
to convey information about the status of the device to the user. Users can
interpret different LED colors (red, yellow, green) and behaviors (flashing,
steady, off) to troubleshoot the device.
Link Quality See LQR.
Reporting
Appendix B: Glossary
B-29