D
ESCRIPTION

OF

S

OFTWARE

F

EATURES

1-3

minimum delay for moving real-time multimedia data across the network.
While multicast filtering and routing provide support for real-time network
applications. Some of the management features are briefly described below.
Configuration Backup and Restore – You can save the current
configuration settings to a file on a TFTP server, and later download this
file to restore the switch configuration settings.
Authentication – This switch authenticates management access via the
console port, Telnet or Web browser. User names and passwords can be
configured locally or can be verified via a remote authentication server (i.e.,
RADIUS). Port-based authentication is also supported via the IEEE
802.1x protocol. This protocol uses the Extensible Authentication
Protocol over LANs (EAPOL) to request a user name and password from
the 802.1x client, and then verifies the client’s right to access the network
via an authentication server (i.e., RADIUS server).
Access Control Lists – 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 Server and DHCP Relay – 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 dynamic configuration of local clients
from a DHCP server located in a different network.
Port Configuration – You can manually configure the speed, duplex
mode, and flow control used on specific ports, or use auto-negotiation to
detect the connection settings used by the attached device. Use the
full-duplex mode on ports whenever possible to double the throughput of
switch connections. Flow control should also be enabled to control