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Options List
C.22.5
SNMP Support
This section reviews in some more detail SNMP on the Model 1088A/B. Simple Network Man-
agement Protocol (SNMP) was created to provide a standard for managing different networks and
the devices on the networks. As such, SNMP is designed to operate on the application layer using
different transport protocols (e.g. TCP/IP and UDP), making it independent of network hardware.
SNMP operates on this basis in the Model 1088A/B.
An SNMP managed network consists of three components: A managed device, an agent and a
network-management system (NMS). The 1088A/B is a managed device running an SNMP agent
that responds to queries from the network-management system.
SNMP Version Information
Currently, there are three versions of SNMP defined: SNMP v1, v2 and v3. The Model 1088A/B
supports these three versions. Here are some differences between versions.
SNMP v1. Basic Operations and Features
•
GetUsed by the NMS to retrieve the value of one or more object instances from and agent.
•
GetNextUsed by the NMS to retrieve the value of the next object instance in a table or a list
within an agent.
•
SetUsed by the NMS to set the values of the object instances within an agent.
•
TrapUsed by agents to asynchronously inform the NMS of a significant event.
SNMP v2. Additional Operations and Features
•
GetBulkUsed by the NMS to efficiently retrieve large blocks of data.
•
InformAllows one NMS to send trap information to another NMS and to then receive a
response.
SNMP v3. Security Enhancement
•
User-based Security Model (USM) for SNMP message security.
•
View-based Access Control Model (VACM) for access control.
•
Dynamically configure the SNMP agents using SNMP SET commands.
Management Information Base (MIB) Table
Object names are stored in a (MIB) table that reside on a computer, and correspond to values
in a managed device (the 1088A/B). The agent in the Option 34 will respond to queries from the
management program to return values of these objects. Currently, management programs may only
read the status of the Model 1088A/B and not configure settings. See Section C.22.5 for a print
out of the current MIB table. To obtain a soft copy of the MIB table for the Model 1088A/B, you
may download it from the Arbiter Systems website at the following address: www.arbiter.com.
SNMP Service
Descriptions that follow are based on the web interface. The SNMP service (agent) runs on the
Option 34 when enabled in the configuration. Figure C.41 illustrates the SNMP Status screen,
Содержание 1088A
Страница 4: ...iv ...
Страница 6: ...vi ...
Страница 18: ...xviii LIST OF FIGURES ...
Страница 23: ...1 4 Attaching Rack Mount Ears to 1088A B Series Clocks 3 Figure 1 2 Attaching Rack Mount Ears ...
Страница 24: ...4 Unpacking the Clock ...
Страница 32: ...12 Front and Rear Panels ...
Страница 38: ...18 Connecting Inlet Power Input and Output Signals ...
Страница 41: ...4 1 GPS Antenna Installation 21 Figure 4 2 Antenna Mounting Bracket Figure 4 3 Antenna Mounting with AS0044600 ...
Страница 46: ...26 GPS Antenna and Cable Information ...
Страница 48: ...28 Setting Internal Jumpers Figure 5 1 Model 1088B Main Board ...
Страница 76: ...56 The Setup Menus ...
Страница 112: ...92 Serial Communication and Command Set ...
Страница 127: ...B 4 Physical Dimensions 107 Figure B 1 Suggested Mounting of the AS0094500 Surge Arrester ...
Страница 128: ...108 Using Surge Arresters ...
Страница 137: ...C 5 Option 04 Parallel BCD Output 117 C 5 2 Option 04 Firmware Setup Figure C 2 Option 04 Firmware Setup ...
Страница 145: ...C 5 Option 04 Parallel BCD Output 125 Figure C 4 Option 04 Output Jumper Settings ...
Страница 146: ...126 Options List Figure C 5 Option 04 Board Layout and Jumper Locations ...
Страница 165: ...C 12 Option 17 Parallel BCD Output and Second RS 232 Port 145 Figure C 11 Option 17 Output Jumper Settings ...
Страница 166: ...146 Options List Figure C 12 Option 17 Board Layout and Jumper Locations ...
Страница 176: ...156 Options List C 14 5 Typical Network Configuration Figure C 15 Option 18 Network Configuration ...
Страница 187: ...C 16 Option 20A Four Fiber Optic Outputs 167 Figure C 22 Option 20A Jumper Locations ...
Страница 194: ...174 Options List Figure C 24 Option 23 Internal Jumper Setup ...
Страница 196: ...176 Options List Figure C 25 Option 27 Jumper Locations ...
Страница 214: ...194 Options List Figure C 28 Option 29 Connector Signal Locations ...
Страница 270: ...250 Options List ...