User's Manual Part 2

Chapter 12 Maintenance

BM2022w User’s Guide

184

The BM2022w sends traps to the SNMP manager when any of the following events occurs:

OMA-DM

When the BM2022w initiates communication with the server (often times at start up or after the

first time you turn it on), the server uploads commands, new files (if any), and other information

used by a service provider to customize the BM2022w’s features.

Device management works as follows:

1 The server (A) sends out the query (1) to the BM2022w (B).

2 The BM2022w responds by sending back its credentials (2), to which the server responds with its

credentials along with a string of management operations (3).

3 The client responds to the management operations (4), perhaps confirming file alterations or

confirming receipt of file uploads and so on.

4 The server disconnects from the BM2022w once all of its management operations have been carried

out.

Figure 105 OMA-DM Data Management

OMA-DM Authentication

In order to ensure the integrity of the connection between an OMA-DM server and the BM2022w,

communication between the two is encoded using one of three common algorithms. They are not

intended to be used in lieu of proper digital security, but instead as a means of transmitting multiple

Table 82 SNMP Traps

TRAP #

TRAP NAME DESCRIPTION

0 coldStart (defined in RFC-1215) A trap is sent after booting (power on).

1 warmStart (defined in RFC-1215) A trap is sent after booting (software reboot).

4 authenticationFailure (defined in

RFC-1215)

A trap is sent to the manager when receiving any

SNMP get or set requirements with the wrong

community (password).

6 whyReboot A trap is sent with the reason of restart before

rebooting when the system is going to restart (warm

start).

6a For intentional reboot: A trap is sent with the message "System reboot by

user!" if reboot is done intentionally, (for example,

download new files, CI command "sys reboot", etc.).

6b For fatal error: A trap is sent with the message of the fatal code if

the system reboots because of fatal errors.