FW 07.00.00/HAFM SW 08.06.00 HP StorageWorks HA-Fabric Manager User Guide (AA-RS2CF-TE, March 2005)

Optional HAFM features108
This section describes the following topics:
• Options, page 108
• Configuration, page 108
• Global threshold changes, page 109
• Open Trunking log, page 110
Options
Access open trunking through the HAFM menu bar. Figure 67 shows the Configure Open Trunking
dialog box. Table 12 describes the function of each option.
Configuration
To enable open trunking for a switch and configure threshold values and event notification options:
Table 12 Open trunking configuration options
Option Function (when enabled)
Enable Open Trunking Enables the open trunking option
Congestion Thresholds Sets the congestion threshold levels for ports as
percentages (1%—99%) of link bandwidths. When
the link’s traffic load becomes
congested, traffic is
rerouted (if possible) to an uncongested link. Two
options are available:
• Select the check box under the Use Algorithmic
Threshold column to use a value computed by the
rerouting algorithm.
• Click in the Threshold % column, and enter a
value in the range of 1 through 99.
Event Notification Identifies the type of events that result in an event log
entry, and generates an SNMP trap. The notifications
occur on first instance only. The event notification
types are:
• Unresolved congestion—the rerouting algorithm
cannot find a path for rerouting data flow to
relieve congestion.
• Back Pressure—the low BB_credit threshold has
been exceeded.
Low BB_Credit threshold Defines the acceptable percent of time that the
transmitting link has no BB_credit. Two options are
available:
• Default threshold value
• User defined threshold value