Enterasys vh-8tx1mf Benutzerhandbuch

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8  Product Overview
VH-8TX1UM/VH-8TX1MF
address that matches one in the authorized list will be forwarded, all other 
packets will be dropped. Note that port security is disabled on all ports by 
default, but can be enabled on a per-port basis by using the console 
interface menus, the on-board Web agent, or via SNMP. 
Broadcast Suppression
Broadcast suppression is a system that prevents a high level of broadcast 
traffic from overwhelming the network. When enabled on a port, the 
system monitors the level of broadcast traffic that passes through the port. 
If the broadcast traffic level rises above a pre-defined packet-per-second 
threshold, a broadcast-control mechanism will be employed. This 
mechanism limits the amount of broadcasts passed by the port to half of 
the received packet-per-second count. The control mechanism remains in 
effect until the number of received broadcasts falls back below the packet-
per-second threshold. Broadcast suppression operation is configurable 
using the console interface menus, the on-board Web agent, or via 
SNMP.
Configuration Upload/Download
The VH-8TX1UM/VH-8TX1MF includes the ability to save the current 
configuration settings to a file on a TFTP server. The file can be later 
downloaded to the module to restore the switch configuration settings. 
The configuration save and restore feature is available using the console 
interface menus, the on-board Web agent, or via SNMP.
BootP
The Bootstrap Protocol (BootP) provides for the capability of passing 
configuration information to hosts on a TCP/IP network. Using this 
process, network devices do not need to be configured before they can 
communicate using the TCP/IP protocol suite. The VH-8TX1UM/VH-
8TX1MF switch uses BootP to automatically configure IP address 
information without requiring access to the console menus. BootP 
operation is configurable using the console interface menus, the on-board 
Web agent, or via SNMP.
Full-Duplex Mode
The full-duplex mode of operation on a port can double the throughput of 
switch connections. This mode disables the collision detection portion of 
the Ethernet Carrier Sense Multiple Access with Collision Detection 
(CSMA/CD) protocol, allowing for two-way traffic. Full duplex is 
configurable using the console interface menus, the on-board Web agent, 
or via SNMP.
Flow Control
Flow control allows you to manage network traffic during congestion 
periods and to prevent the loss of packets when port buffer thresholds are 
exceeded. Flow control also serves to deny access to additional traffic