10.1.4 Variable Binding (VarBind)
A VarBind is a sequence of two specific fields, an Object Identifier (ID) and the value for/from that Object ID. A
VarBindList is a simple list of these pairings.
Among the Event Properties employed, the following example highlights two new VarBinds for version 2 software:
Timestamp & Alarm Trigger.
NEW!
for version 2 software
NEW!
for version 2 software
Figure 116–VarBinds, showing Timestamp and Alarm Trigger
10.2
Network Manager MIB Files
The SNMP network manager will require the following files: 1) Alpha_System_Controller.MIB, 2) MIB_ii.MIB, and
3) SMI.MIB.
To obtain MIB files, logon to www.alpha.ca/downloads and select software. From the home page, this is located
under the right-most column entitled “Support.”
A password will be required to access these secure pages and may be obtained via Login (on the home page).
Select “Create New Account” and fill out the User Registration Form. Select “Save” upon completion and an Alpha
Sales Representative will contact you by e-mail to complete the process.
The MIB variables (in the file Alpha_System_Controller.MIB) are as follows:
The Alpha_System_Controller.MIB file
provides separate object identifier (OID) for
System Information active and cleared alarm traps.
Battery Voltage
Alarm status and signals are reconstructed
into tables and sub tables to allow for future
Load Voltage expansion while remaining backward
Load Amperage compatible with already defined alarms and
signals.
System Minor Alarm
Table of Numeric Values
Table of String Values.
See 10.3.
0350046-J0 Rev C
Page
108 of 127
Site Information
Battery Amperage
System Major Alarm
Visit the Alpha website at www.alpha.ca for the latest manual and product downloads
10.3
Communication Configuration
SNMP Communication Configuration is only accessible via the web interface.
Select Configure SNMP from CXC web interface Communications menu as shown below.
10.3.1 Snmp Multiple Community Names
This menu item enables the User to configure multiple CXC SNMP community settings for get (read) and set
(write). This is to permit multiple SNMP NMS programs, with different community strings, to connect to the CXC.
NOTE: Before this feature, the CXC had one set of community strings, which meant that any NMS that tried to connect to
the CXC must be a match.
Now, a company with multiple NMS's, each in a different region, with a different community string, will find it
easier to connect to the CXC from various places. See Figure below:
Figure 117–SNMP Community Name web interface window