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

Page: 75 / 154

Installing and Configuring the Edge Switch 2/24
75 Edge Switch 2/24 Installation Guide
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:
■
The switch domain ID must be set to Insistent. For instructions, refer to
“
Configure Switch Operating Parameters ” on page 67.
■
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.
Note: Activating a preferred path can result in receipt of out-of- order frames if the
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
instructions, refer to “ Configure Feature Key ” on page 88.
2. At the Hardware View, choose Configure > Preferred Path. The Configure
Preferred Paths dialog box displays ( Figure 20 ).
Figure 20: Configure Preferred Paths dialog box