Chapter 15. Managing Access to the Configuration Program
165
Configuring SNMP
The Simple Network Management Protocol (SNMP) enables a host
computer to access configuration, performance, and other system
data that resides in a database on the modem. The host computer
is called a management station and the modem is called an SNMP
agent. The data that can be accessed via SNMP is stored in a
Management Information Database (or MIB) on the modem.
When SNMP is enabled, the modem responds to SNMP requests
from the host. The host may ask to read data from the MIB or, when
its privileges allow, write data to it.
Privilege levels are defined by the SNMP communities configured
on the modem. A community is a named group of IP addresses.
These addresses identify the hosts that are permitted to act as
SNMP management stations for accessing the MIB. Each
community is defined as having either read-only or read/write
privileges.
The data stored in the MIB includes the standard items defined for
the SNMP protocol and custom items defined by the ISP. The MIB
contents are preconfigured by the ISP and cannot be managed via
the Web-based interface.
A complete SNMP setup includes the following items:
f A management station equipped with an SNMP manager
client that enables sending messages to an SNMP agent
(e.g., the modem). This configuration is not described here.
f A MIB stored in the modem’s memory. This must be
preconfigured in the software image by the ISP.
f The SNMP service enabled on the modem, including
defined communities that allow read-only or read/write
accesses from specific hosts. This configuration is
described below.
Creating Communities
1. Log into Web Configuration, click the Admin tab, and then
click
SNMP Config in the task bar.
The SNMP Configuration page displays:
Figure 71. SNMP Configuration
2. On the SNMP Configuration page, type a community name
in the empty text box in the left column of the table.
