HP StorageWorks 2.140 Director Switch - Manual (Page 211)

Optional Features
209 Director Element Manager User Guide
Enabling and Configuring Open Trunking
To enable Open Trunking for a specific switch and configure threshold values and
event notification options, use the following steps.
1. Choose Open Trunking from the Configure menu. The Configure Open
Trunking dialog box displays, as shown in Figure 68 .
Figure 68: Configure Open Trunking dialog box
2. Enable Open Trunking by clicking the Enable Open Trunking check box to
display a check mark.
3. Set the Congestion Thresholds for ports as percentages of link bandwidths,
in the range of 1% through 99%. These thresholds are used only when a port
becomes an ISL. When the link’s traffic load becomes greater than this
percentage, the link is seen as congested and traffic is rerouted (if possible) to
an uncongested link. Note that rerouting may not be possible if there are no
alternate links available or if alternate links are congested or have no available
BB_Credit.
Note: Using default settings for port congestion thresholds should work well in
most cases. Normally, you will not need to set them.