Panasonic NN46240-502 - Manual (Page 77)

Nortel Secure Router 8000 Series
Configuration - LAN Access and MAN Access
Full-duplex A operation mode of the Ethernet port. In full-duplex mode, a port can send
and receive data simultaneously without interference.
G
GE
Gigabit Ethernet. GE adopts the IEEE 802.3z. GE is compatible with 10
Mbit/s and 100 Mbit/s Ethernet.
H
Half-duplex
In half-duplex mode, a port can only send or receive data at a single time.
L
LAN
LAN switch
Local Area Network. A network that comprises PCs and stations located
within several square kilometers. LAN features a high speed and low error
rate. Ethernet, FDDI, and token ring are three major implementations.
A multihome switching device that works on the data link layer.
M
MAC
MAN
MTU
Media Access Control. In the OSI model, the data link layer, which is divided
into the MAC and the Link Access Control (LAC), MAC is nearer to the
physical layer.
Metropolitan Area Network. A network that covers more than ten square
kilometers or a city.
Maximum Transmission Unit. The maximum unit of a data packet that an
interface can process. MTU is measured in bytes.
P
PING
POS
A diagnostic tool that uses the ICMP Echo message to test whether a certain
device in an IP network is reachable.
A transmission technology that realizes the transmission of IP packets or other
data packets on SONET/SDH.
Q
QoS
Quality of Service. A measurement used to evaluate the service capability for
forwarding packets in the IP network. The evaluated elements include the
delay, delay jitter, and packet loss ratio.
A-2 Nortel Networks Inc. Issue 5.3 (30 March 2009)