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Interface Form: General Tab

[This is the Context-Sensitive Help topic for the Interface form, General tab.]

The Interface Form provides details about the selected network interface.

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General SNMP Values
Attribute Description
ifName

Optional Interface MIB variable for ifName () assigned to the interface by the vendor. If no IfName value is provided, SNMP uses the ifType+ifIndex which is dynamically configured and can change. This name is not guaranteed to be unique or consistent across reboots.

iIfAlias

Optional Interface MIB variable for ifAlias assigned to the interface. This value is set by the device administrator. An ifAlias could be useful if the interface vendor did not provide an ifName value.

ifDescr

Optional Interface MIB variable for ifDescr (1.3.6.1.2.1.2.2.1.2) for the interface. This attribute is set by the device administrator. 

ifIndex

Interface MIB variable for the row number in the interface table (ifTable) for this interface. The row number can change. If you are an Administrator, see Accurately Detect Interface Changes for more information.

Note Interfaces on non-SNMP nodes have an ifIndex value of 0 (zero).

ifSpeed

Interface MIB variable for the interface’s bandwidth in bits per second. Depending on the device vendor, this value might indicate current speed or potential speed.

ifType

Interface MIB variable for the physical link protocol type of the interface. Possible values include: Ethernet and frameRelay.

Note Interfaces on non-SNMP nodes have an ifType value of other.

Requires Network Node Manager iSPI Performance for Metrics Software (NNM iSPI Performance for Metrics). To populate performance data in the dashboard views or enhance NNM iSPI Performance for Metrics reports by sharing NNMi configuration settings, install the optional Network Performance Server (NPS).

Input Speed

(NNM iSPI Performance for Metrics) If the Network Node Manager iSPI Performance for Metrics Software is installed and configured within your environment, you can type an integer value to override the input speed value returned by the device's SNMP agent. Indicate the speed this interface is capable of receiving data in bits per second.

For example, you might want to override the Input Speed value for the following reason:

Sometimes the value returned by the device's SNMP agent is not accurate or causes problems when NNM iSPI Performance for Metrics calculates performance monitoring. For example, the input speed might be restricted due to circumstances in your environment, or bandwidth controls might limit the connection speed regardless of what the physical connection is capable of (such as within a WAN).

Note (NNMi Advanced - Global Network Management) If you change this value for an Interface monitored by a Regional Manager, NNMi forwards the updated information to the Global Manager at the next Discovery Interval.

If you are an NNMi administrator, you can set input speeds for multiple interfaces using the nnmsetiospeed.ovpl command. Also see "Maintaining NNMi" in the Network Node Manager i Software Deployment Reference for more information.

Output Speed

(NNM iSPI Performance for Metrics) If the Network Node Manager iSPI Performance for Metrics Software is installed and configured within your environment, you can type an integer value to override the output speed value returned by the device's SNMP agent. Indicate the speed this interface is capable of transmitting data in bits per second.

For example, you might want to override the Output Speed value for the following reason:

Sometimes the value returned by the device's SNMP agent is not accurate or causes problems when NNM iSPI Performance for Metrics calculates performance monitoring. For example, the output speed might be restricted due to circumstances in your environment, or bandwidth controls might limit the connection speed regardless of what the physical connection is capable of (such as within a WAN).

Note (NNMi Advanced - Global Network Management) If you change this value for an Interface monitored by a Regional Manager, NNMi forwards the updated information to the Global Manager at the next Discovery Interval.

If you are an NNMi administrator, you can set output speeds for multiple interfaces using the nnmsetiospeed.ovpl command. Also see "Maintaining NNMi" in the Network Node Manager i Software Deployment Reference for more information.