52 Network Switch Installation Guide
Appendix
Manage the Switch
After the initial conguration, you may manage and monitor network activity by CLI or SNMP
management, or by using the Web browser utility.
CLI Management
The Command Line Interface (CLI) is administered when the terminal is directly connected to
the Console port of the switch. This is an out-of-band connection, which means that it is on a
dierent circuit than normal network communications, and thus works even when the network is
down. After setting the IP address of the switch, you can also use a a terminal program, such as
Telnet, to access and control the switch.
For more information on CLI commands, see the “CLI Documentation”.
SNMP Management
After conguring the IP address and upgrading the rmware, you can manage and monitor
network activity by SNMP.
Simple Network Management Protocol (SNMP) is an application–layer protocol dened by the
Internet Architecture Board (IAB) in RFC1157 for managing and monitoring network devices.
SNMP is one of widely accepted protocols used to manage and monitor network elements. The
switch supports SNMP version 1.0, 2.0, and 3.0.
The basic components and functions of SNMP are as follows:
• A Managed Device, in this case the switch
• An SNMP Agent
• SNMP Manager
• Management Information Database or Base (MIB)
The switch comes bundled with an SNMP Agent, which runs locally on the device. The SNMP
Agent communicates with an SNMP-compatible console program, called the SNMP Manager.
The commonly shared database between the SNMP Agent and the SNMP Manager is called
Management Information Base (MIB). In short, MIB les are the set of questions that the SNMP
Manager can ask the SNMP Agent. The SNMP Agent collects these data locally and stores it, as
dened in the MIB.
The MIBs contain a standard set of statistical and control values dened for the managed
devices on a network. The SNMP protocol also allows the extension of these standard values
with values specic to a particular SNMP Agent through the use of private MIBs. See the “SNMP
Documentation” for moreinformation on using SNMP.
By default, you can use the community name “public” to get SNMP objects or use “private” to get
and set SNMP objects.
Telnet or SSH Management
By default, Telnet and SSH can be used to directly manage the switch without necessary settings.
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