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PLANET WGSW-48000 User Manual

Page 289

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User’s Manual of WGSW-48000

289

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.

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.

Router Port

A router port is a port on the Ethernet switch that leads switch towards the Layer 3 multicast device.

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.

S

SAMBA

Samba is a program running under UNIX-like operating systems that provides seamless integration between UNIX and

Microsoft Windows machines. Samba acts as file and print servers for Microsoft Windows, IBM OS/2, and other SMB

client machines. Samba uses the Server Message Block (SMB) protocol and Common Internet File System (CIFS),

which is the underlying protocol used in Microsoft Windows networking.

Samba can be installed on a variety of operating system platforms, including Linux, most common Unix platforms,

OpenVMS, and IBM OS/2.