SNMP Trap Setting

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In SNMP Trap Setting, configure the settings required to receive SNMP Traps from network devices. Manage the Trap reception port, IP access control, and SNMPv1/v2c and v3 authentication settings.

Basic screen and settings

SNMP Trap Setting consists of three tabs to manage settings by SNMP version.

1. Select the NMS manager to configure from the Select Manager dropdown.

2. Select the Trap tab for the selected manager and configure the settings.

3. Click the [Save] button to save the configuration changes.

SNMP Trap Setting tabs

Tab	Description
Trap Receiver	Basic Trap receiver settings and IP access control
SNMP v1/v2c Trap	v1/v2c Trap Community settings
SNMP v3 Trap	v3 Trap USM (User-based Security Model) settings

Trap Receiver tab

Configure Trap reception. SNMP Trap messages are transmitted through UDP port 162 by default. You can set a different port if needed.

Configuration Item	Description
Port (Required)	Trap reception port number (default: 162) - Standard port for SNMP Trap
SNMP v1/v2c Trap Enable	Select enable/disable SNMP v1/v2c Trap reception with toggle - When enabled, receives Community-based Trap messages
SNMP v3 Trap Enable	Select enable/disable SNMP v3 Trap reception with toggle - When enabled, receives USM-based secure Trap messages
Access Control Policy (IP Access Control)	Control source IP for Trap reception

IP Access Control

1. In the IP Access Control area, select Activate and enter the Network (IP/CIDR).

2. Click the Add button.

3. You can verify the registered IP in the list.

   Item	Description
   Type	allow or deny
   Network	IP address or CIDR notation (e.g., 10.0.0.0/8)
   	Delete the rule

4. Click the [ Save ] button in the upper right of the screen to save the Trap Receiver settings.

SNMP v1/v2c Trap tab

Manage Community settings for v1/v2c Trap reception. Set the community string required to collect Trap messages. This string determines data access permissions.

Configuration Item	Description
Community	Add Community - Enter new Community String and click [+ Add] button to add - [+ Add] button is enabled only when entering a Community not in the list
Allowed Communities	Manage registered Community list - Display allowed Communities - Delete the item by clicking icon

SNMP v3 Trap tab

Manage User-based Security Model (USM) settings for security-enhanced SNMP v3 Trap reception.

SNMPv3 User Configuration (USM)

1. Enter the following items to add and configure a user.

   Configuration Item	Required	Description
   SNMP V3 Engine ID	Required	Direct input or search Engine ID - Displays search popup when clicking [Search Engine ID] button
   Username	Required	Enter SNMP v3 username
   Security Level	Required	Select security level
   		noAuthNoPriv	- No authentication, no encryption - Required settings: none
   		authNoPriv	- Authentication only, no encryption - Required settings: Auth Protocol + Auth Key
   		authPriv	- Both authentication and encryption - Required settings: Auth Protocol + Auth Key + Priv Protocol + Priv Key
   Authentication Protocol	Conditional	Authentication protocol (enabled when Security Level is authNoPriv or authPriv) - MD5: MD5 hash-based authentication - SHA: SHA-1 hash-based authentication - SHA224: SHA-224 hash-based authentication - SHA256: SHA-256 hash-based authentication - SHA384: SHA-384 hash-based authentication - SHA512: SHA-512 hash-based authentication
   Auth Key	Conditional	Authentication key
   Privacy Protocol	Conditional	Encryption protocol (enabled when Security Level is authPriv) - DES: DES encryption - AES: AES-128 encryption - AES128: AES-128 encryption - AES192: AES-192 encryption - AES256: AES-256 encryption
   Priv Key	Conditional	Encryption key

2. Click the [+ Add SNMP V3 User] button to save the user configuration changes.

3. Click the [Save] button in the upper right of the screen to save the SNMPv3 User Configuration (USM) settings. The button is disabled if there are no changes.

4. You can verify the registered SNMPv3 users in the list.

   Item	Description
   Engine ID	SNMP Engine ID
   Username	Username
   Security Level	Security level
   Auth Protocol	Authentication protocol
   Auth Key	Authentication key (masked)
   Priv Protocol	Encryption protocol
   Priv Key	Encryption key (masked)
   	Delete the user

Search Engine ID

You can search for the Engine ID of SNMP v3 devices.

1. Click the [Search Engine ID] button next to the SNMP V3 Engine ID input field.

2. In the Search Engine ID popup window, enter the items for the engine to search.

   Item	Description
   Host	Enter target device IP address
   Port	SNMP port number (default: 161)
   Community	SNMP Community String (default: public) - Search Engine ID using v1/v2c

3. Click the [Search] button to execute Engine ID search with the entered information.

   • When search is successful, automatically enters the value in the Engine ID field.

4. Click the [Cancel] button to cancel the search and close the popup.

Note

Features planned for future support

The following features are scheduled to be supported in future updates. The timing and details are subject to change.

• Trap forwarding: Forward received Traps to other systems