Black Box LGB6026A, Руководство по управлению

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C
HAPTER
1 | Introduction
Description of Software Features
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). 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 web/SNMP/Telnet/web
management access, and MAC address filtering for port access.
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
dynamic configuration of local clients from a DHCP server located in a
different network.
P
ORT
C
ONFIGURATION
You can manually configure the speed and 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 network traffic during periods of
congestion and prevent the loss of packets when port buffer thresholds are
exceeded. The switch supports flow control based on the IEEE 802.3x
standard (now incorporated in IEEE 802.3-2002).
P
ORT
M
IRRORING
The switch can unobtrusively mirror traffic from any port to a monitor port.
You can then attach a protocol analyzer or RMON probe to this port to
perform traffic analysis and verify connection integrity.
P
ORT
T
RUNKING
Ports can be combined into an aggregate connection. Trunks can be
manually set up or dynamically configured using Link Aggregation Control
Protocol (LACP – IEEE 802.3-2005). The additional ports dramatically
increase the throughput across any connection, and provide redundancy by
taking over the load if a port in the trunk should fail. The switch supports
up to 32 trunks.