Rev. 1 - YML672
www.netcomm.com.au
NB1300 ADSL Modem
Page 79
NAT:
Network Address Translation (NAT) is a routing protocol that allows
global IP Addresses to be translated into multiple private IP Addresses
for use on internal LAN networks. The explosion in the use of the
Internet has created a critical problem for the Internet Assigned Numbers
Authority (IANA) which is in charge of assigning IP Addresses to
Internet users, ISPs etc. NAT is a technology that has been introduced to
help maximize the utilization of assigned IANA and global IP Addresses.
PAP/CHAP:
Password Authentication Protocol and Challenge Handshake
Authentication Protocol (PAP/CHAP). Most ISPs use either one for
user identification. If your ISP doesn’t support these two protocols,
contact them for an authentication script.
PCI:
Peripheral Component Interconnect (PCI) is a specification introduced
by Intel Corporation that defines a local bus system that allows up to 10
PCI-compliant expansion cards to be installed in the computer.
PPP:
Short for Point-to-Point Protocol, a communications protocol for
transmitting information over standard telephone lines between devices
from different manufacturers.
PPPoE:
Short for PPP over Ethernet, relying on two widely accepted standards,
Ethernet and the Point-to-Point Protocol. PPPoE is a communications
protocol for transmitting information over the Ethernet between devices
from different manufacturers.
Router:
An Internet device that routes requests for information to other routers
until the information’s location is found and the data can be transmitted
back to the origin of the request.
TCP/IP:
Short for Transmission Control Protocol and Internet Protocol, the suite
of communications protocols that enable hosts on the Internet to connect
and exchange streams of data.
MRU:
Maximum Receive Unit indicates the peer of PPP connection the
maximum size of the PPP information field this device can be received.
The default value is 1492 and is used in the beginning of the PPP
negotiation. In the normal negotiation, the peer will accept this MRU
and will not send packet with information field larger than this value.
MTU:
Maximum Transmission Unit indicates the network stack of any packet
is larger than this value will be fragmented before the transmission.
During the PPP negotiation, the peer of the PPP connection will
indicates its MRU and will be accepted. The actual MTU of the PPP
connection will be set to the smaller one of MTU and the peer’s MRU.
The default is value 1492.
MSS:
Maximum Segment Size is the largest size of data that TCP will send in a
single IP packet. When a connection is established between a LAN client
and a host in the WAN side, the LAN client and the WAN host will
indicate their MSS during the TCP connection handshake. The default
value is 1432.
UBR:
Short for Unspecified bit rate.
WAN:
Wide Area Network. A System of LANs connected by telephone lines
and/or radio waves.
