eSNMP API Routines esnmp_register

A subtree is identified by the base MIB name and the corresponding OID number of the node that is the parent of all MIB variables contained in the subtree. For example: The MIB II tcp subtree has an OID of 1.3.6.1.2.1.6. All elements subordinate to this have the same first seven digits and are included in the subtree’s object table. The subtree can also be a single MIB object (a leaf node) or even a specific instance.

By registering a subtree, the subagent indicates that it will process eSNMP requests for all MIB variables (or OIDs) within that subtree’s range. Therefore, a subagent should register the most fully qualified (longest) subtree that still contains its instrumented MIB variables.

The master agent does not permit a subagent to register the same subtree more than once. However, subagents can register subtrees with ranges that overlap the OID ranges of subtrees previously registered, and subagents can also register subtrees registered by other subagents.

For example, TCP/IP Services supports MIB II. In the eSNMP environment, the os_mibs subagent registers the MIB II subtree ip (OID 1.3.6.1.2.1.4).

TCP/IP Services also provides the gated subagent, which registers the ipRouteEntry MIB subtree (OID 1.3.6.1.2.1.4.21.1).

These MIBs are registered at priority 1. Any subagent that registers at a higher priority (greater than 1) overrides these registrations.

A request for IpRouteIfIndex (OID 1.3.5.1.2.1.4.21.1.2) is passed to the gated subagent. Requests for other ip variables, such as ipNetToMediaIfIndex (OID 1.3.5.1.2.1.4.22.1.1) are passed to the os_mibs subagent. If the gated subagent terminates or unregisters the ipRouteEntry subtree, subsequent requests for ipRouteIfIndex will go to the os_mibs subagent. This occurs because the ip subtree, which includes all ipRouteEntry variables, is now the authoritative region of requests for ipRouteIfIndex.

Return Values

SNMP_LIB_OK

The esnmp_register routine has completed

 

successfully.

ESNMP_LIB_BAD_REG

The esnmp_init routine has not been called, the

 

timeout parameter is invalid, or the subtree has

 

already been queued for registration.

ESNMP_LIB_LOST_

The subagent has lost communications with the

CONNECTION

master agent.

Note that the return value indicates only the initiation of the request. The actual status returned in the master agent’s response will be returned in a subsequent call to the esnmp_poll routine in the state field.

Example

#include <esnmp.h>

 

 

#define RESPONSE_TIMEOUT

0

/* use the default time set

 

 

in OPEN message */

#define REGISTRATION_PRIORITY 10

/* priority at which subtrees

 

 

will register */

int status;

extern SUBTREE ipRouteEntry_subtree;

5–4eSNMP API Routines

Page 61 Page 63
Page 62
Image 62
Compaq AAR04BCTE manual Snmplibok
Page 61 Page 63

AAR04BCTE specifications

The Compaq AAR04BCTE is a remarkable desktop computer that embodies a combination of performance, versatility, and reliability, catering to various computing needs for both personal and professional use. This model stands out in the crowded market of desktop PCs due to its robust specifications and user-friendly features.

One of the main highlights of the AAR04BCTE is its powerful processor, which ensures speedy performance and smooth multitasking capabilities. With options available for both Intel and AMD processors, users can select a configuration that best suits their operational requirements, whether for intensive gaming, content creation, or general productivity tasks.

Memory capacity is another significant aspect of the AAR04BCTE. The system typically comes equipped with ample RAM, allowing for efficient handling of various applications running simultaneously. This feature is particularly beneficial for users who rely on memory-intensive software, such as graphic design tools or data analysis programs.

The storage capabilities of this model are designed to accommodate the needs of modern users. A combination of SSD and HDD options provides a perfect balance between speed and storage capacity. The SSD ensures quick boot times and faster access to frequently used applications, while the HDD offers substantial space for large files, multimedia content, and backups.

Connectivity is well addressed in the AAR04BCTE, featuring multiple USB ports, HDMI, and Ethernet connections. This extensive range of ports allows users to connect various peripherals, including printers, external storage devices, and monitors, making the computer a flexible choice for different setups.

The AAR04BCTE also incorporates advanced graphics technologies, making it suitable for both casual gaming and video editing tasks. With integrated graphics options and the possibility of adding discrete graphics cards, this model can handle visually demanding applications without compromising on performance.

In terms of energy efficiency, the Compaq AAR04BCTE adheres to modern standards, ensuring that users can operate their desktops without incurring exorbitant electricity costs. Additionally, the design of the unit is sleek and compact, enabling it to fit seamlessly into various workspaces while maintaining an aesthetic appeal.

Overall, the Compaq AAR04BCTE is a solid choice for users seeking a reliable desktop computer with powerful features, versatile connectivity, and efficient performance. Whether for home use or in a professional environment, this model delivers on its promise of quality and functionality, addressing the diverse needs of today's technology-savvy users.
Top Page Image Contents