Glossary
Glossary-12 PortMa ster Configuration Guide
EBGP
Exterior BGP. The BGP used between peers in different autonomous systems, or, when
confederations are in use, between peers in different confederation member autonomous
systems (CMASs). Unlike internal BGP peers, EBGP peers need not have full connectivity
with one another.
endpoint discriminator
A 12-digit identifier used to associate multiple chassis in a Multichassis PPP domain.
echo test
A diagnostic test used to check network reachability in which an Internet Control
Message Protocol (ICMP) Echo Request packet or Simple Network Management Protocol
(SNMP) test packet is sent to elicit a standard response.
Ethernet
A network communications system developed and standardized by Digital Equipment
Corporation, Intel, and Xerox using baseband transmission, carrier sense multiple
access/carrier detect (CSMA/CD) access, logical bus topology, and coaxial cable. The
successor IEEE 802.3 standard provides for integration of Ethernet into the Open System
Interconnection (OSI) model and extends the physical layer and media with repeaters
and implementations that operate on fiber optic cable, broadband, and unshielde d
twisted pair.
external peer
A peer that resides in a different autonomous system—or, when confederations are in
use, in a different confederation memb er autonomous system (CMAS)—from the curren t
PortMaster.
Exterior BGP
See EBGP.
F
File Transfer Protocol
See FTP.