DXS/DWS 3200 Series User Guide

DXS-3227, DXS-3227P, and DXS-3250 Features

This appendix describes the device features. The system supports the following features:

F e a t u r e

D e s c r i p t i o n

Auto Negotiation

Auto negotiation allows an device to advertise modes of opera-

tion. The auto negotiation function provides the means to

 

 

exchange information between two devices that share a point-to-

 

point link segment, and to automatically configure both devices to

 

take maximum advantage of their transmission capabilities.

 

Auto negotiation provides port advertisement. Port advertisement

 

allows the system administrator to configure the port speeds

 

advertised.

 

 

Automatic MAC Addresses Aging

MAC addresses from which no traffic is received for a given

period are aged out. This prevents the Bridging Table from over-

 

 

flowing.

Back Pressure

On half-duplex links, the receiving port prevents buffer overflows

 

by occupying the link so that it is unavailable for additional traffic.

Class Of Service

The IEEE 802.1p signaling technique is an OSI Layer 2 standard

for marking and prioritizing network traffic at the data link/MAC

 

 

sub-layer. 802.1p traffic is classified and sent to the destination.

 

No bandwidth reservations or limits are established or enforced.

 

802.1p is a spin-off of the 802.1Q (VLANs) standard. 802.1p

 

establishes eight levels of priority, similar to the IP Precedence IP

 

Header bit-field.

Command Line Interface

Command Line Interface (CLI) syntax and semantics conform as

much as possible to common industry practice. Syslog

 

 

Syslog is a protocol that enables event notifications to be sent to

 

a set of remote servers, where they can be stored, examined and

 

acted upon. The system sends notifications of significant events

 

in real time, and keeps a record of these events for after-the-fact

 

usage.

Configuration File Management

The device configuration is stored in a configuration file. The Con-

figuration file includes both system wide and port specific device

 

 

configuration. The system can display configuration files in the

 

form of a collection of CLI commands, which are stored and

 

manipulated as text files.

DHCP Clients

Dynamic Host Client Protocol. DHCP enables additional setup

parameters to be received from a network server upon system

 

 

startup. DHCP service is an on-going process.

 

 

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D-Link DWS/DXS-3200 manual DXS-3227, DXS-3227P, and DXS-3250 Features, A t u r e S c r i p t i o n