PowerSNMP for ActiveX

Manage network devices and remote information

• Manager ActiveX control queries agents, receives traps from agents, and sends/receives inform messages
• Discover agents and query their Management Information Base (MIB)
• Get an entire table with a single method ... ToTable() returns a 2 dimensional table array (supports sparse tables)
• Communicate with agents in parallel (on multiple threads) or serially (on a single thread)

Respond to SNMP requests and send traps

• Agent ActiveX control receives, decodes and responds to Get, GetNext, GetBulk and Set requests
• Create and send trap messages
• Create default response messages that can be modified as desired
• Automatically updates agent MIB

Use standard and custom MIBs

• Load and parse MIB files
• MibNode class maps OIDs to the variable IDs found in PDUs
• Intrinsic support provided for standard SNMPv2 SMI MIBs

COM Classes

• Simple Component Object Model (COM) classes and controls are intuitive and easy-to use
• Royalty-free distribution of 32-bit and 64-bit native code dll's (Dart.SnmpAx.dll and Dart.CoreAx.dll)
• Supporting classes (IPEndPoint, SnmpMessage, AuthoritativeEngine, MibNode, MibTrap, Security, Variable, VariableList) provide objects that simplify SNMP usage
• Requires no system services beyond basic network transport (independent of Windows SNMP Service)

Manager ActiveX control

Use the Manager ActiveX control to easily add SNMP manager functionality to your application. Provides an easy-to-use interface that handles the details of querying SNMP agents.

• Start() method turns on asynchronous processing to receive Inform and Trap messages (raises Inform and Trap events)
• Build a request message by setting properties, adding variables (OIDs) using simple Variable objects, and sending it using
  - GetResponse() sends the request message to a single agent, returning a response message
  - GetResponses() sends the request message to a broadcast address, returning an array of all response messages received
• Walk() sends multiple messages to a specified agent, returning a list of variable values that exist under the specified root OID (retrieving all table values in one easy step)
  - Specify whether GetNext or GetBulk messages should be used, what the timeout should be, and whether the method should attempt retries
  - Use the return value as a flat list, or use ToTable() to format variables into a dimensional array indexed by row and column
• GetResponse(), GetResponses() and Walk() can be executed using three possible threading techniques (for optimal operation in any environment)
  - Free-threading operation is used for environments like ASP, services, or console applications where no message loop is present
  - Pseudo-blocking operation is used to block execution and process the message loop while work executes on a worker thread
  - Asynchronous operation is used for event-driven environments like VB6, where the request executes on a worker thread and raises an event when finished
• Discovery of v3 authoritative engine ID, time, and boots is automatic ... just address an Agent using an IPEndPoint object and discovery happens automatically
• Discovered authoritative engine parameters are cached and efficiently reused for successive requests

Agent ActiveX control

Use the Agent ActiveX control to easily build SNMP agents. Provides an easy-to-use interface that handles the details of processing and responding to SNMP managers' requests. Sends traps.

• Start method turns on agent asynchronous processing
  - Request event is raised when a request message arrives and includes a default response message
  - Log event is raised for logging all incoming/outgoing messages
  - Error event is raised to report errors
  - Binds to any IP address (version 4 or 6, IP_ANY and LOOPBACK)
• Independently encodes and sends trap and notification messages to managers (local IPEndPoint can be specified)
• Automatically generates default response messages from the local MIB object that can be sent as-is or modified by your application
• Automatic, on-the-fly message encoding and decoding
• Implements a v3 authoritative engine object that responds with v3 report messages
• Handles all v1, v2 and v3 Get, GetNext, GetBulk and Set requests and error reporting
• Console and web applications without a message loop are fully supported using MTA (Multi-Threaded Apartment Model) option
• Windows forms applications with a message loop are fully supported using asynchronous STA (Single-Threaded Apartment Model) option
• Build a message by setting properties, adding variables (OIDs) using simple Variable objects, and sending the message. It doesn't get any easier!