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Initial Configuration
Manage the Switch
4.3
After the initial configuration, you may manage and monitor network activity by CLI or SNMP
management, or by using the Web browser utility.
CLI Management
4.3.1
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 different
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 console program, such as Telnet, to access
and control the switch.
For more information on CLI commands, see the “CLI Documentation”.
SNMP Management
4.3.2
After configuring the IP address and upgrading the firmware, you can manage and monitor network
activity by SNMP.
Simple Network Management Protocol (SNMP) is an application–layer protocol defined 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 files 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
defined in the MIB.
The MIBs contain a standard set of statistical and control values defined for the managed devices on
a network. The SNMP protocol also allows the extension of these standard values with values specific
to a particular SNMP Agent through the use of private MIBs. See the “SNMP Documentation” for more
information 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
4.3.2.1
By default, Telnet can be used to directly manage the switch without necessary settings.
However when using SSH, you must generate the RSA and DSA keys first to globally enable the SSH
function on the switch.
To generate the DSA and RSA keys, input the following commands:
1.
“Crypto key generate dsa”
“Crypto key generate rsa”
After generating the DSA and RSA keys, enable SSH function by entering the following command:
2.
“ip ssh”
