Raisecom
Gazelle S1512i-PWR (A) User Manual
8
Appendix
Raisecom Proprietary and Confidential
Copyright © Raisecom Technology Co., Ltd.
52
Link
Aggregation
Control
Protocol
(LACP)
A protocol used for realizing link dynamic aggregation. The LACPDU
is used to exchange information with the peer device.
Link-state
tracking
Link-state tracking provides an interface linkage scheme, extending the
range of link backup. Through monitoring upstream links and
synchronizing downstream links, faults of the upstream device can be
transferred quickly to the downstream device, and primary/backup
switching is triggered. In this way, it avoids traffic loss because the
downstream device does not sense faults of the upstream link.
M
Multi-mode
fiber (MMF)
In this fiber, multi-mode optical signals are transmitted.
N
Network Time
Protocol
(NTP)
A time synchronization protocol defined by RFC1305. It is used to
synchronize time between distributed time server and clients. NTP is
used to perform clock synchronization on all devices that have clocks in
the network. Therefore, the devices can provide different applications
based on a unified time. In addition, NTP can ensure a very high
accuracy with an error of 10ms or so.
O
Open Shortest
Path First
(OSPF)
An internal gateway dynamic routing protocol, which is used to decide
the route in an Autonomous System (AS)
Optical
Distribution
Frame (ODF)
A distribution connection device between the fiber and a
communication device. It is an important part of the optical transmission
system. It is mainly used for fiber splicing, optical connector
installation, fiber adjustment, additional pigtail storage, and fiber
protection.
P
Password
Authentication
Protocol
(PAP)
PAP is an authentication protocol that uses a password in Point-to-Point
Protocol (PPP). It is a twice handshake protocol and transmits
unencrypted user names and passwords over the network. Therefore, it
is considered unsecure.
Point-to-point
Protocol over
Ethernet
(PPPoE)
PPPoE is a network protocol for encapsulating PPP frames in Ethernet
frames. With PPPoE, the remote access device can control and account
each access user.
