HP 316095-B21 - StorageWorks Edge Switch 2/24 Installation Manual page 75

The preferred path feature lets you specify and configure one or more ISL data
paths between multiple directors or switches in a fabric. Each participating
director or switch must be configured as part of a desired path. The following
rules apply when configuring a preferred path:
Note:
preferred path differs from the current path, if input and output (I/O) is active from the
source port, and if congestions is present on the current path.
To configure one or more preferred paths for the switch:
1. Ensure that the preferred path PFE key is installed and configured. For
2. At the Hardware View, choose Configure > Preferred Path. The Configure
Figure 20: Configure Preferred Paths dialog box
Edge Switch 2/24 Installation Guide
The switch domain ID must be set to Insistent. For instructions, refer to
"Configure Switch Operating
Domain IDs range between 1 through 31.
Source and exit port numbers are limited to the range of ports available on the
director or switch (0 through 23).
For each source port, only one path is defined to each destination domain ID.
Activating a preferred path can result in receipt of out-of- order frames if the
instructions, refer to
Preferred Paths dialog box displays
Installing and Configuring the Edge Switch 2/24
Parameters" on page 67.
"Configure Feature Key" on page 88.
(Figure 20).
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