Administer > NNMi Communications > Configure Communications > Configuring SNMP Proxy Settings

Configuring SNMP Proxy Settings

Some networks use an SNMP proxy agent to communicate with network devices. The following diagram shows the SNMP communication steps NNMi uses if you configure an SNMP Proxy Address and an SNMP Proxy Port using Configuration > Communication Configuration from the NNMi console.

Tip For the alternate method of configuring SNMP proxy settings from the command line, see the nnmcommunication.ovpl reference page.

Using Proxy Servers

  1. The NNMi management server sends an SNMP request to an SNMP proxy address and SNMP proxy port to obtain information from the managed router and the managed switch.
  2. The SNMP proxy server determines where to send the SNMP request, then sends SNMP requests to the managed router and switch to obtain the information requested by the NNMi management server.
  3. The managed switch and router respond to the SNMP proxy server (using the SNMP Proxy Address and SNMP Proxy Port) with the requested information.
  4. The SNMP proxy server responds to the NNMi management server (using the configured SNMP port).

    Note NNMi supports SNMP proxy servers that support using the SecurityPackAgentAddressOid OID (.1.3.6.1.4.1.99.12.45.1.1). Use the following property to include this OID in SNMP requests for devices using SNMP proxy settings:

    com.hp.nnm.snmp.USE_PROXY_VARBIND=true

    The default setting for this property is false.

  5. The SNMP proxy server forwards SNMP informs and traps from the managed devices to NNMi. NNMi supports the use of the following OIDs to determine the source of incoming traps forwarded from an SNMP proxy:

    • TrapForwardingAddressTypeOid .1.3.6.1.4.1.11.2.17.2.19.1.1.2.0
    • TrapForwardingAddressOid .1.3.6.1.4.1.11.2.17.2.19.1.1.3.0
    • Rfc3584TrapAddressOid .1.3.6.1.6.3.18.1.3.0 (RFC 3584)
    • Rfc3584TrapCommunityOid .1.3.6.1.6.3.18.1.4.0 (RFC 3584)

    When using NNMi with an SNMP proxy server, ask the proxy vendor if they support the OIDs in this list.