User's Manual
Table Of Contents
- 1 VIPER OVERVIEW
- 2 SYSTEM ARCHITECTURE AND NETWORK PLANNING
- 3 DATARADIO VIPER QUICK START
- 4 VIPER WEB MANAGEMENT
- 5 UNIT STATUS
- 6 SETUP (BASIC)
- 7 SETUP (ADVANCED)
- 7.1 RF OPTIMIZATIONS
- 7.2 IP SERVICES
- 7.3 IP ADDRESSING
- 7.4 IP OPTIMIZATION
- 7.5 IP ROUTING (TABLE/ENTRIES)
- 7.6 TIME SOURCE
- 7.7 ALARM REPORTING
- 7.8 USER SETTINGS
- 8 SECURITY
- 9 STATISTICS
- 10 MAINTENANCE
- 11 NEIGHBOR MANAGEMENT
- 12 NETWORK OPTIMIZATION
- 13 UPGRADING YOUR FIRMWARE
- VIPER SPECIFICATIONS
- PRODUCT WARRANTY
- DEFINITIONS
7.2.1 SNMP
Note: This feature is available only when the appropriate feature key is enabled on the Viper
radio modem. Contact CalAmp for information about obtaining and enabling the SNMP
feature.
SNMP (Simple Network Management Protocol) is used by network management systems to
manage and monitor network-attached devices. SNMP is based on the manager/agent
model consisting of a manager, an agent, a database of management information, managed
objects, and the network protocol. The manager provides the interface between the human
network manager and the management system. The agent provides the interface between
the manager and the physical devices being managed (Figure 7.4). SNMP uses basic
messages (such as GET, GET-NEXT, SET, and TRAP) to communicate between the manager
and the agent.
MANAGER
AGENT
Management Database
Management Database
Managed Object
Messages
Network
Protocol
Management System Managed Element
Human Network
Manager
Figure 7.4 - SNMP: manager/agent model
7.2.2 MIB
The manager and agent use a Management Information Base (MIB), a logical, hierarchically
organized database of network management information. MIB comprises a complete
collection of objects used to manage entities in a network. A long numeric tag or object
identifier (OID) is used to distinguish each variable uniquely in the MIB and SNMP
messages.
7.2.2.1 Viper MIB Files
Each Viper unit firmware package is bundled with three MIB files (found inside mibs.zip
file):
• DATARADIO-REGS.MIB: contains a top level set of managed object definitions aimed at
managing Dataradio products.
• 1213.MIB: contains a set of managed object definitions aimed at managing TCP/IP-
based internets.
• VIPER.MIB: contains a set of managed object definitions aimed at managing Dataradio
Viper radio modems.
7.2.2.2 OID
In SNMP, each object has a unique OID consisting of numbers separated by decimal points.
These object identifiers naturally form a tree. Figure 7.5 illustrates this tree-like structure
for dataradio-regs.mib MIB, which comes bundled with every Viper unit package. A path to
any object can be easily traced starting from the root (top of the tree). For example, object
titled “dataradio” has a unique OID: 1.3.6.1.4.1.3732. The MIB associates each OID with a
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