A Glossary
Quidway NetEngine20/20E
Configuration Guide - Basic Configurations
A-4
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 05 (2010-01-30)
Modem
Modulator-demodulator. Device that converts digital and analog signals.
Multicast
A process of transmitting packets of data from one source to many destinations.
The destination address of the multicast packet uses Class D address, that is,
the IP address ranges from 224.0.0.0 to 239.255.255.255. Each multicast
address represents a multicast group rather than a host.
N
NDP
Neighbor Discovery Protocol. A protocol that is used to discover the
information of the neighboring Huawei device that is connected with the local
device.
NMS
Network Management System. A system that sends various query packets and
receives the response packet and trap packet form the managed devices and
displays all the information.
NTDP
A protocol that is used to collect the information of the adjacency and the
backup switch of each device in the network.
NTP
Network Time Protocol. An application protocol that is used to synchronize the
distributed server and the client side.
O
OSPF-TE
Traffic engineering of OSPF. (For the information of OSPF, refer to B
Acronyms and Abbreviations)
P
Policy-based routing
A routing scheme that forwards packets to specific interfaces based on
user-configured policies.
R
Regular expression
When a lot of information is output, you can filter the unnecessary contents out
with regular expressions and display the necessary contents.
RMON
Remote monitoring. A MIB agent specification defined by the IETF that
defines functions for the remote monitoring of the data flow of a network
segment or the whole network.
Router
A device on the network layer that selects routes in the network. The router
selects the optimal route according to the destination address of the received
packet through a network and forwards the packet to the next router. The last
router is responsible for sending the packet to the destination host.
RRPP
Rapid Ring Protection Protocol. A protocol that is applied on the data link
layer. When the Ethernet ring is complete, it can prevent the broadcast storm
caused by the data loop. When a link is disconnected on an Ethernet ring, it can
rapidly restore the communication link between the nodes on the ring network.
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