Manufacture Technology GEFXL2-CSW28KX User Manual page 306

Q
QCE
QCE is an acronym for QoS Control Entry. It describes QoS class associated with a
particular QCE ID.
There are six QCE frame types: Ethernet Type, VLAN, UDP/TCP Port, DSCP, TOS, and
Tag Priority. Frames can be classified by one of 4 different QoS classes: "Low", "Normal",
"Medium", and "High" for individual application.
QCL
QCL is an acronym for QoS Control List. It is the list table of QCEs, containing QoS
control entries that classify to a specific QoS class on specific traffic objects.
Each accessible traffic object contains an identifier to its QCL. The privileges determine
specific traffic object to specific QoS class.
QL
QL In SyncE this is the Quality Level of a given clock source. This is received on a port in
a SSM indicating the quality of the clock received in the port.
QoS
QoS is an acronym for Quality of Service. It is a method to guarantee a bandwidth
relationship between individual applications or protocols.
A communications network transports a multitude of applications and data, including high-
quality video and delay-sensitive data such as real-time voice. Networks must provide
secure, predictable, measurable, and sometimes guaranteed services.
Achieving the required QoS becomes the secret to a successful end-to-end business
solution. Therefore, QoS is the set of techniques to manage network resources.
R
RARP
RARP is an acronym for Reverse Address Resolution Protocol. It is a protocol that is used
to obtain an IP address for a given hardware address, such as an Ethernet address.
RARP is the complement of ARP.
RADIUS
RADIUS is an acronym for Remote Authentication Dial In User Service. It is a networking
protocol that provides centralized access, authorization and accounting management for
people or computers to connect and use a network service.
RDI
RDI is an acronym for Remote Defect Indication. It is a OAM functionallity that is used by
a MEP to indicate defect detected to the remote peer MEP
RSTP
In 1998, the IEEE with document 802.1w introduced an evolution of STP: the Rapid
Spanning Tree Protocol, which provides for faster spanning tree convergence after a
topology change. Standard IEEE 802.1D-2004 now incorporates RSTP and obsoletes
STP, while at the same time being backwards-compatible with STP.
296 Publication date: March, 2012
Revision A1