Digisol DG-GS4826S, Руководство по управлению

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C
HAPTER
1 | Introduction
Description of Software Features
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D
ESCRIPTION OF
S
OFTWARE
F
EATURES
The switch provides a wide range of advanced performance enhancing
features. Flow control eliminates the loss of packets due to bottlenecks
caused by port saturation. Broadcast storm suppression prevents
broadcast traffic storms from engulfing the network. Untagged (port-
based), tagged, and protocol-based VLANs, plus support for automatic
GVRP VLAN registration provide traffic security and efficient use of network
bandwidth. CoS priority queueing ensures the minimum delay for moving
real-time multimedia data across the network. While multicast filtering and
routing provides support for real-time network applications.
Some of the management features are briefly described below.
C
ONFIGURATION
B
ACKUP AND
R
ESTORE
You can save the current configuration settings to a file on the
management station (using the web interface) or an FTP/TFTP server
(using the web or console interface), and later download this file to restore
the switch configuration settings.
A
UTHENTICATION
This switch authenticates management access via the console port, Telnet,
or a web browser. User names and passwords can be configured locally or
can be verified via a remote authentication server (i.e., RADIUS or
). Port-based authentication is also supported via the IEEE
802.1X protocol. This protocol uses Extensible Authentication Protocol over
LANs (EAPOL) to request user credentials from the 802.1X client, and then
uses the EAP between the switch and the authentication server to verify
the client’s right to access the network via an authentication server (i.e.,
RADIUS or server).
Other authentication options include HTTPS for secure management access
via the web, SSH for secure management access over a Telnet-equivalent
connection, SNMP Version 3, IP address filtering for SNMP/Telnet/web
management access. MAC address filtering and IP source guard also
provide authenticated port access. While DHCP snooping is provided to
prevent malicious attacks from insecure ports.
A
CCESS
C
ONTROL
L
ISTS
ACLs provide packet filtering for IP frames (based on address, protocol,
TCP/UDP port number or TCP control code) or any frames (based on MAC
address or Ethernet type). ACLs can by used to improve performance by
blocking unnecessary network traffic or to implement security controls by
restricting access to specific network resources or protocols.
DHCP
A DHCP server is provided to assign IP addresses to host devices. Since
DHCP uses a broadcast mechanism, a DHCP server and its client must
physically reside on the same subnet. Since it is not practical to have a
DHCP server on every subnet, DHCP Relay is also supported to allow