HP StorageWorks 2.12 Edge Switch - Manual (Page 103)

Configuring the Switch
103 Edge Switch Element Manager User Guide
The preferred domain ID must be unique for each switch in a fabric. If two
switches have the same preferred domain ID, the E_Ports segment, causing the
fabric to segment.
Insistent
Click the Insistent check box to remove or add a check mark. The default state is
disabled (no check mark). When a check mark displays, the domain ID configured
in the Preferred Domain ID field will become the active domain identification
when the fabric initializes.
Note: This option is required if Enterprise Fabric Mode (optional SANtegrity Binding
feature) is enabled. See “ Configuring a Preferred Path ” on page 108 for details.
Note: If you enable Insistent Domain while the switch or director is online, the
Preferred Domain ID will change to the current active domain ID if the IDs are
different.
Caution: If a switch with a duplicate domain ID exists in the fabric, both
switches' E_Ports will segment when they try to join.
Rerouting Delay
To enable rerouting delay, place a check mark in Rerouting Delay check box.
This option is only applicable if the configured switch is in a multiswitch fabric.
The default state is disabled.
Enabling the rerouting delay ensures that frames are delivered in order through the
fabric to their destination. If there is a change to the fabric topology that creates a
new path (for example, a new switch is added to the fabric), frames may be routed
over this new path if its hop count is less than a previous path with a minimum hop
count. This may result in frames being delivered to a destination out of order
because frames sent over the new, shorter path may arrive ahead of older frames
still in route over the older path.
If rerouting delay is enabled, traffic ceases in the fabric for the time specified in
the E_D_TOV field of the dialog box. This delay allows frames sent on the old
path to exit to their destination before new frames begin traversing the new path.