SNMP

Core provides (Simple Network Management Protocol (SNMP) capabilities. SNMP is a protocol used for network management for collecting information about network entities, such as servers and devices, on an Internet Protocol (IP) network. Various third-party SNMP systems are available that provide SNMP-based management and tools.

Core provides the following SNMP capabilities:

  • Link up and down traps

    Core sends these two SNMP traps (events) to a specified SNMP trap receiver using the SNMP v2c protocol.

  • An SNMP server can request information from Core related to these management information bases (MIBs):

    • The HOST-RESOURCES-MIB
    • Apache web server configuration and status values (APACHE2-MIB).
    • disk I/O (UCD-DISKIO-MIB)

  • Support for SNMP v2c and v3 protocols to pull MIB information from Core to the SNMP server.

Core limits Incoming SNMP requests to around 10 SNMP requests per minute.

Configuring SNMP on Core

This section includes the general workflow to configure SNMP:

Step 1

Configuring the SNMP trap receiver server to which Core sends SNMP traps.

Step 2

Enabling the SNMP service with the v3 protocol from whom Core accepts requests.

Step 3

Enabling the SNMP service with the v2c protocol between Core and your SNMP server.

Configuring the SNMP trap receiver server

Configure the server to which Core sends SNMP traps. This server can also get MIB information from Core.

Procedure 

  1. Log into System Manager.
  2. Go to Settings > SNMP to open the SNMP details pane.
  3. Click Add to open the Add SNMP Trap Receiver window.

  4. Edit the fields, as necessary.

    Refer to the Add SNMP Trap Receiver window table for details.

  5. Click Apply > OK to save the changes.

Add SNMP Trap Receiver window

The following table summarizes fields and descriptions in the Add SNMP Trap Receiver window:

Table 13.  Add SNMP Trap Receiver values

Fields

Description

Server

Enter the server name for your SNMP trap receiver.

For example:
trapreceiver.myCompanyDomain.com

Port

Enter the port number for your SNMP trap receiver.

Community

Enter the string which names the SNMP community on your SNMP trap receiver.

Version

Core sends SNMP traps using SNMP protocol V2c. You can choose V2c or V3 for MIB requests.

Admin State

Select Enable to enable the SNMP service for this SNMP server.

Deleting SNMP trap receiver servers

Procedure 

To delete one or more SNMP trap receiver servers:

  1. Log into System Manager.

  2. Go to Settings > SNMP to open the SNMP details pane.

  3. Select one or more of the servers you want to delete.

  4. Click the box next to Server to select all servers in the list.

  5. Click Delete > Yes.

Enabling the SNMP service with the v3 protocol

Set up the SNMP v3 user from whom Core accepts requests. In addition, you can enable or disable sending traps to any configured SNMP trap receiver.

Procedure 

To enable the SNMP service with the SNMP v3 protocol:

  1. Log into System Manager.
  2. Go to Settings > SNMP to open the SNMP details pane.
  3. Go to the SNMP Control section > SNMP Service.
  4. Select Enable to enable the SNMP service on Core.

  5. Go to the Protocol option and verify that v3 is selected.

    The v3 option is selected, by default.

  6. Click Add to open the Add SNMP v3 User window.

  7. Enter the SNMP v3 user fields, as necessary.

    Refer to the Add SNMP v3 User window for details.

  8. Click Save to add this user to the SNMP v3 Users table.
  9. Go to Link Up/Down Trap.

  10. Click Enable.

    Select Disable to stop Core from sending SNMP traps to any SNMP trap receiver.

  11. Click Apply > OK to save the changes.

Add SNMP v3 User window

Table 14.  Add SNMP v3 User window

Fields

Description

User Name

Enter the username with out any spaces (example: miuser).

Security Level

Select asecurity level for authentication. The options are:

  • noAuthNoPriv: Without Authentication or Privacy.
  • authNoPriv: With Authentication and without Privacy
  • authPriv: With Authentication and Privacy

Auth Protocol

Select an authentication protocol. This can be selected only if the Security Level is selected as authNoPriv or authPriv.

Auth Password

Enter the Auth Password with a minimum of 8 characters.

Privacy Protocol

Select a privacy protocol. This can be selected only if Security Level is selected as authPriv.

Privacy Password

Enter a privacy password with minimum of 8 characters.

Deleting SNMP v3 users

Procedure 

  1. Log into System Manager.
  2. Go to Settings > SNMP to open the SNMP details pane.
  3. Go to the SNMP Control group.

  4. Select one or more of the users you want to delete.

    Click the box next to User Name to select all users in the list.

  5. Click Delete > Yes.

Enabling the SNMP service with the v2c protocol

Set up the SNMP v2c communication between Core and your SNMP server. You also enable or disable sending traps to any configured SNMP trap receiver.

Procedure 

  1. Log into System Manager.
  2. Go to Settings > SNMP to open the SNMP details pane.
  3. Go to the SNMP Control section > SNMP Service.
  4. Select Enable to enable the SNMP service on Core.
  5. Go to the Protocol option and select v2.

  6. Change the value of Read Only Community if necessary.

    The standard SNMP community name is public. This is the community the SNMP server uses to pull MIB information from Core.

  7. Go to the Link Up/Down Trap option and select Enable.

    Select Disable to stop Core from sending SNMP traps to any SNMP trap receiver.

  8. Click Apply > OK to save the changes.