Enterasys Networks Enterasys Vertical Horizon VH-8G - Manual (Page 21)

9033639 Product Overview 7
• Alarm: a function that allows managers to set alarm thresholds based
on traffic statistics. Alarms trigger other actions through the Event
group.
• Event: a function that operates with the Alarm group to define an
action that will be taken when an alarm condition occurs. The event
may write a log entry and/or send a trap message.
Note that RMON statistics and other information can only be viewed using
a connection to the on-board web agent or via other compatible SNMP
management applications.
Port Mirroring
The VH-8G switch includes the ability to mirror the traffic being switched
on any port for purposes of network traffic analysis and connection
integrity. When this feature is enabled, a protocol analyzer or RMON
probe can be connected to the mirror port. You can only mirror one port
to another port at one time. Port mirroring is configurable 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-8G 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.
LEDs
The switch port LEDs provide a quick and accurate display of the integrity
of switch connections. Each SC port has a Link and Act LED. The Link
LED indicates a valid 1000 Mbps connection or if the port has been
disabled. The Act LED indicates network activity on the port segment.
Full-Duplex Mode
The full-duplex mode of operation on a port doubles the throughput of the
switch connection. Full-duplex 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
that could add to a congestion condition. The VH-8G switch supports flow
VH-8g.book Page 7 Friday, November 17, 2000 5:29 PM