About SNMP

All firmware versions of the BMENUA0100 module support the version 1 (V1) SNMP agent. Firmware version 2 (and higher) of the module (BMENUA0100.2) also supports version 3 (V3) of the SNMP agent.

NOTE: Both SNMP versions, V1 and V3, are not simultaneously supported.

An SNMP agent is a software component of the SNMP service that runs on the BMENUA0100 module and provides access to diagnostic and management information for the module. You can use SNMP browsers, network management software, and other tools to access this data.

In addition, the SNMP agent can be configured with the IP addresses of 1 or 2 devices (typically PCs that run network management software) to be the targets of event-driven trap messages. Such messages inform the management device of events like cold starts and the inability of the software to authenticate a device.

NOTE: Communication to the SNMP agent running on the BMENUA0100 module can be performed using either IPv4 or IPv6 addressing.

Termination of SNMP Service

The SNMP service running on the BMENUA0100 module is terminated if:

  • the module is in the ERROR state.

  • the SNMP service is in the FAULT state.

Access the SNMP Tab

Double-click the BMENUA0100 module in the Control Expert configuration to access the SNMP tab.

The SNMP agent can connect to and communicate with 1 or 2 SNMP managers. The SNMP service includes:

  • authentication checking by the BMENUA0100 module of any SNMP manager that sends SNMP requests.

  • management of events or traps.

SNMP Agent Configuration in Control Expert and the Web Pages

Common SNMP parameters are configured in Control Expert. Cybersecurity related SNMP parameters are configured in module's web pages.

If the cybersecurity rotary selector switch is set to:

  • Secured mode: you can configure the SNMP agent in both Control Expert and the BMENUA0100 module’s web pages.

    NOTE: In Secured mode, the SNMP version needs to be configured the same in both Control Expert, and in the SNMP web page. If these settings are not the same, the SNMP service will not start.

  • Standard mode: you can configure the SNMP agent only in Control Expert.

    NOTE: If the module is configured for SNMP V3 in Control Expert:

    • The BMENUA0100.2 module, equipped with firmware version 2 or higher, will operate SNMP V3 with NoAuthNoPriv security level.

    • The BMENUA0100 module, with firmware earlier than version 2, will operate SNMP V1.

SNMP Parameters

The Control Expert SNMP tab includes the following parameters. Unless otherwise indicated, parameters apply to both SNMP V1 and V3.

NOTE: In Secured mode, the SNMP version needs to be configured the same in both Control Expert, and in the SNMP web page. If these settings are not the same, the SNMP service will not start.

Field

Parameter

Description

Value

SNMP Version

SNMP V1

Select this to use SNMP V1

checked/unchecked

SNMP V3

Select this to use SNMP V3

IP Address managers

IP Address manager 1

The IPv4 address of the first SNMP manager to which the SNMP agent sends notices of traps.

Protocol (IPv4) dependent

IP Address manager 2

The IPv4 address of the second SNMP manager to which the SNMP agent sends messages of traps.

Agent

Location (SysLocation)

device location

31 characters (maximum)

Contact (SysContact)

information about the person to contact for device maintenance

Enable SNMP manager

unchecked (default): You can edit the Location and Contact parameters.

checked: You cannot edit the Location and Contact parameters.

checked/unchecked

Community names

(SNMP V1 only)

Set

password that the SNMP agent requires to read commands from an SNMP manager

NOTE: There is no default setting. If an SNMP manager is used, input the same community name used by the SNMP manager.

15 characters (maximum)

Get

Trap

Security

(SNMP V1 only)

Enable “Authentication failure” trap

unchecked (default): not enabled.

checked: Enabled. The SNMP agent sends a trap message to the SNMP manager if an unauthorized manager sends a Get or Set command to the agent.

checked/unchecked

SNMP User Name

(SNMP V3 only)

The user name recognized by the SNMP server.

string of 32 characters max ASCII / UTF8 in the encoding range [33-122]

Supported Traps

By default, the BMENUA0100 module SNMP V1 agent supports the following traps:

  • Linkup

  • Linkdown

The Authentication failure trap is also supported, if enabled.

SNMP MIB-2 Object Identifiers

Under the Vendor Name Schneider Electric, the BMENUA0100 module presents the following object identifier (OID) values:

Object Name

OID

Value

SysDesc

1.3.6.1.2.1.1.1

Product: BMENUA0100 - OPC UA communication module. Firmware ID: xx.yy

SysObjectID

1.3.6.1.2.1.1.2

1.3.6.1.4.1.3833.1.7.255.53

SysName

1.3.6.1.2.1.1.5

BMENUA0100

SysServices

1.3.6.1.2.1.1.7

74, representing the sum of (2**7-1 + 2**4-1 + 2**2-1) and indicating support of protocols in the following OSI layers:

  • 7: application layer

  • 4: transport layer

  • 2: data-link layer

ifDesc

1.3.6.1.2.1.2.2.1.2

This OID contains information describing the interface, including the product name, and port name.