Amer Networks E5Web GUI - Manual (Page 98)

• Addresses: my_host
3. Click OK
2.4.4. SNMP Monitoring
Overview
Simple Network Management Protocol (SNMP) is a standardized protocol for management of
network devices. An SNMP compliant client can connect to a network device which supports the
SNMP protocol to query and control it.
cOS Core supports SNMP version 1 and version 2. Connection can be made by any SNMP
compliant clients to devices running cOS Core. However, only query operations are permitted for
security reasons. Specifically, cOS Core supports the following SNMP request operations by a
client:
• The GET REQUEST operation
• The GET NEXT REQUEST operation
• The GET BULK REQUEST operation (SNMP Version 2c only)
The cOS Core MIB
The Management Information Base (MIB) is a database, usually in the form of a text file, which
defines the parameters on a network device that an SNMP client can query or change. The MIB
file for a device running cOS Core is distributed with the standard cOS Core distribution pack as a
file with the name CLAVISTER-MIB.
This MIB file should be transferred to the hard disk of the workstation that will run the SNMP
client so it can be imported by the client software. When the SNMP client runs, the MIB file is read
and tells the client which values can be queried on a cOS Core device.
Each entry in the MIB includes a textual explanation of what the value is and a complete list is not
reproduced in this guide. A typical MIB file entry for the total number of packets transmitted by
an interface appears as follows:
clvIfPktsTotCnt OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Total number of packets transmited by the interface"
::= { clvIfStatsEntry 10 }
Defining SNMP Access
SNMP access is defined through the definition of a cOS Core Remote object with a Mode value of
SNMP. The Remote object requires the entry of:
• Interface - The cOS Core interface on which SNMP requests will arrive.
Chapter 2: Management and Maintenance
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