Quidway NetEngine80
Configuration Guide - Basic Configurations
A Glossary
Issue 04 (2009-12-20)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
A-1
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Glossary
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Accounting
A network security service that records the user's access to the network.
Agent
A process that resides in all managed devices. It receives request packets from
the NM Station and performs the Read or Write operation on managed
variables according to packet types and generates response packets and sends
them to the NM Station.
AH
Authentication Header. A security protocol that provides data authentication
and integrity for IP packets. AH is used in the transmission mode and in the
tunneling mode.
ASSP
Analogue Sensor Signal Processes. An error tolerance protocol that provides
the interface backup in the multiple access, multicast and broadcast in LAN
(such as Ethernet).
ATM
Asynchronous transfer mode. A connection oriented network technology that
uses the fixed cell (53 bytes) to transfer services of multiple types such as text,
audio or video data. The fixed length of the ATM cells enables the hardware
processing of the cells and thus shortens the forwarding delay. ATM takes full
advantage of high-speed media such as E3, SONET and T3.
Authentication
A method used to prove user identity.
Authorization
A method used to prove identity of users to use the service.
B
Backup center
A mechanism in which the interface on a device backs up each other and traces
the status of the interface. If an interface is Down, the backup center provides a
backup interface to undertake the service.
BFD
Bidirectional Forwarding Detection. A unified detection mechanism that is
used to detect and monitor the link or IP routes forwarding at a fast pace,
Black list
A filtering mode that is used to filter the packet according to the source IP
address. Compared with the ACL, the black list can filter the packet at a high
speed because its matching region is simple. It can shield the packet from the
specified IP address.
