Configuring SNMP Trap Options (NSM Procedure)

You can configure the SNMP trap options feature to recognize the duplicate traps and to distinguish SNMPv1 traps based on the outgoing interface. This feature is helpful when some SNMP traps that come from the same device leave the device through a different outgoing interface, causing each such SNMP trap packet to have a different source address. You can set the source address of every SNMP trap packet sent by a device to be the same, regardless of the outgoing interface. You can also set the agent address of each SNMPv1 trap.

To configure the SNMP trap options in NSM:

In the navigation tree, select Device Manager > Devices.
In the Devices list, double-click the device to select it.
Click the Configuration tab.
In the configuration tree, expand SNMP.
Select Trap Options.
Select the Enable Feature check box.
Enter the parameters as specified in Table 83.
Click one:
- OK—To save the changes.
- Cancel—To cancel the modifications.
- Apply—To apply the SNMP settings.

Note: After you make changes to a device configuration, you must push that updated device configuration to the physical security device for those changes to take effect. You can update multiple devices at one time. See the Updating Devices section in the Network and Security Manager Administration Guide for more information.

Table 83: Configuring Trap Options Fields

Option	Function	Your Action
Comment	Specifies the comment for the SNMP trap option.	Enter the comment.
Agent Address	Specifies the agent address of all SNMPv1 traps generated by this device.	Choose the agent address: None outgoing-interface—Sets the agent address of each SNMPv1 trap to the address of the outgoing interface of that trap.
Logical System	On routers only, specifies the name of the logical system for this SNMP client. The logical system performs a subset of the actions of its parent physical device and have its own interfaces, policies, and routing instances.	Expand the Trap Options tree and select Logical System. Click the New button or select a routing instance and click the Edit button. Configure the following to create and define a logical system entry: Name—Specify the name of the logical system. Comment—Enter a comment for the logical system. Routing Instance—Configure the following to create and define a routing instance entry: Lo0—Choose one of the following as the source address for the trap packets: lo0—The source address of the SNMP trap packets is set to the lowest loopback address configured on the interface lo0. address—The source address of the SNMP trap packets is set to the address you specify. Enter a valid IPv4 address configured on one of the device interfaces.
Routing Instances	Specifies the routing instances for SNMPv1 and SNMPv2 trap targets. All targets configured in the trap group use these routing instances.	Expand the Trap Options tree and select Routing Instances. Click the New button or select a routing instance and click the Edit button. Configure the following to create and define a routing instance entry: Name—Specify the name of the routing instance. Comment—Enter a comment for the routing instance.
Source Address	Specifies the source address of every SNMP trap packet sent by this device. You can set a valid interface address as the source address for SNMP traps regardless of the outgoing interface. If the source address is not specified, the address of the outgoing interface is used as the source address.	Expand the Trap options tree and select Routing Instances. Expand the Routing Instances tree and select Source Address, or expand the Trap options tree and select Source Address directly. Configure the following to create and define a source address entry: Comment—Enter a comment for the source address. Lo0—Choose one of the following as the source address for the trap packets: lo0—The source address of the SNMP trap packets is set to the lowest loopback address configured on the interface lo0. address—The source address of the SNMP trap packets is set to the address you specify. Enter a valid IPv4 address configured on one of the device interfaces.