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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 is an acronym for QoS Control List. It is the list of QCEs that contains QoS
control entries classified 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 in SyncE is the Quality Level of a given clock source. This is received on a port
in a SSM to indicate 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 functionality 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 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.
