Enterasys Networks VH-8TX1MF Manuel d'utilisateur télécharger pdf (Page 20)

6 Product Overview VH-8TX1UM/VH-8TX1MF

An RS-232 connection, using a DB-9 connector, is included on the

rear panel for system management. Serial console management can

be performed out-of-band using a terminal or computer running

communications software. You can connect directly to the RS-232

port on the rear panel, or make a connection via a modem. See the

Management Guide for information on managing the VH-8TX1UM/

VH-8TX1MF switch via the serial console.

• Telnet, in-band (over Ethernet)

The switch supports management through a Telnet connection using

the TCP/IP protocols. Telnet is performed using a terminal or

computer running communications software. See the Management

Guide for information on managing the system via Telnet. Global

user name and password protection for changing the operating

parameters of the switch is provided.

• Web-based network manager, in-band

The system can be managed over HTTP protocol with a Web

browser (Internet Explorer 4.0 or above, or Netscape Navigator 4.0

or above). Standard agent MIBs embedded in the switch provide

basic SNMP management through an embedded graphic interface.

• SNMP-based network manager, in-band

The system can also be managed using SNMP, the most common

protocol used today for network management. Standard agent MIBs

embedded in the switch provide basic SNMP management through

industry-standard SNMP applications.

Management security protection is provided based on SNMP

community names. See Chapter 4, “SNMP Management,” in the

Management Guide for more information.

RMON

RMON (Remote Monitoring) is a facility used to manage networks

remotely while providing multi-vendor interoperability between monitoring

devices and management stations. RMON is defined by an SNMP MIB.

This MIB is divided into nine different groups, each gathering specific

statistical information or performing a specific function. RMON-capable

devices gather network traffic data and then store them locally until

downloaded to an SNMP management station.

The VH-8TX1UM/VH-8TX1MF supports four of the nine groups of RMON

defined for Ethernet networks on a per segment basis. Specifically, these

are:

• Statistics: a function that maintains counts of network traffic statistics

such as number of packets, broadcasts, collisions, errors, and

distribution of packet sizes.

• History: a function that collects historical statistics based on user-

defined sampling intervals. The statistical information collected is the

same as the Statistics group, except on a time stamped basis.

• Alarm: a function that allows managers to set alarm thresholds based

on traffic statistics. Alarms trigger other actions through the Event

group.

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Enterasys Networks VH-8TX1MF Manuel d'utilisateur Page 20

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