Threshold groups for trunk ports are used to configure parameters for trunk port analysis. Thresholds are determined by the trunk port’s media type; for example, Ethernet or ATM.

A trunk port is any port that connects to another port or interface on a device that participates in the Layer 2 bridging protocol. By default, all trunk ports are managed, which means that by default all trunk ports can be associated with trunk port threshold groups.

Because trunk ports are inherently more critical than access ports, trunk port threshold groups typically have lower thresholds than access port threshold groups for utilization, errors, and so on. That is, the thresholds for trunk port threshold groups are more stringent than the thresholds for access port threshold groups.

Default trunk port threshold groups for the IP Manager shows the default trunk port threshold groups, their target classes and matching criteria, and their default settings. The target class for all trunk port threshold groups is Port.

Table 1. Default trunk port threshold groups for the IP Manager

Trunk port groups

Target class and matching criteria

Default settings

1 Gb Ethernet

Port with attributes:

  • IsManaged = TRUE

  • IsConnector = TRUE

  • Max Speed = 1000000000

  • Type = *ETHER*|*CSMACD*

Ethernet Interface/Port Performance

10/100 Mb Ethernet

Port with attributes:

  • IsManaged = TRUE

  • IsConnector = TRUE

  • Type = *ETHER*|*CSMACD*

Ethernet Interface/Port Performance

ATM

Port with attributes:

  • IsManaged = TRUE

  • IsConnector = TRUE

  • Type = *ATM*

Generic Interface/Port Performance

Other Ports

Port with attributes:

  • IsManaged = TRUE

  • IsConnector = TRUE

Generic Interface/Port Performance

Two things to note about Default trunk port threshold groups for the IP Manager:

  • The default group-to-setting mappings in the table are the mappings that users would typically use. The settings that are available to a trunk port threshold group are as follows:

    • Disable Fault Analysis for Interface/Port

    • Disable Performance Analysis for Interface/Port

    • Ethernet Interface/Port Performance

    • Generic Interface/Port Performance

    • Interface/Port Flapping

  • The “Other Ports” threshold group has the lowest priority. Managed trunk ports that do not match the criteria for the other trunk port threshold groups become members of the Other Ports threshold group.