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YML14WN ADSL2+ Wireless N150 Modem Router User Guide
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NetComm Gateway Series - ADSL2+ Wireless N150 Modem Router
RFC 1483
Multi-protocol encapsulation over AAL-5. Two encapsulation methods for carrying network interconnect trafc over ATM AAL-5. The rst
method allows multiplexing of multiple protocols over a single ATM virtual circuit. The protocol of a carried PDU is identied by prexing the
PDU by an IEEE 802.2 Logical Link Control (LLC) header. This method is in the following called “LLC Encapsulation”. The second method
does higher-layer protocol multiplexing implicitly by ATM Virtual Circuits (VCs). It is in the following called “VC Based Multiplexing”.
Router
A system responsible for making decisions about which of several paths network (or Internet) trafc will follow. To do this, it uses a routing
protocol to gain information about the network and algorithms to choose the best route based on several criteria known as “routing metrics.
Spanning Tree
Spanning-Tree Bridge Protocol (STP). Part of an IEEE standard. A mechanism for detecting and preventing loops from occurring in a multi-
bridged environment. When bridges connect three or more LAN segments, a loop can occur. Because a bridge forwards all packets that
are not recognized as being local, some packets can circulate for long periods of time, eventually degrading system performance. This
algorithm ensures only one path connects any pair of stations, selecting one bridge as the ‘root’ bridge, with the highest priority one as
identier, from which all paths should radiate.
TELNET
The virtual terminal protocol in the Internet suite of protocols. Allows users of one host to log into a remote host and act as normal terminal
users of that host.
VCI
Virtual Circuit Identier. Part of the ATM cell header, a VCI is a tag indicating the channel over which a cell will travel. The VCI of a cell can be
changed as it moves between switches via Signaling.
VPI
Virtual Path Identier. Part of the ATM cell header, a VPI is a pipe for a number of Virtual Circuits.
WAN
Wide area network. A data communications network that spans any distance and is usually provided by a public carrier (such as a
telephone company or service provider)