HP StorageWorks 2/140 director product manager user guide - Page 110

Insistent, Rerouting Delay, Preferred Domain ID

Page 110 highlights

Configuring the Director part of the request). If the requested domain ID is not allocated to the fabric, the domain ID is assigned to the requesting director. If the requested domain ID is already allocated, an unused domain ID is assigned. Note that you must set the director offline before you can change to the preferred domain ID. The preferred domain ID must be unique for each director and switch in a fabric. If two switches or directors have the same preferred domain ID, the E_Ports segment, causing the fabric to segment. For more information on domain ID, refer to the section on domain ID assignment for multiswitch fabrics in the hp StorageWorks high availability planning guide for details. Insistent This option is not supported unless the SANtegrity binding feature is installed. Click the 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. See the following notes: • This option is required if Enterprise Fabric Mode (optional SANtegrity binding feature) is enabled. • 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 director with a duplicate domain ID exists in the fabric, both directors' E_Ports will segment when they try to join. Rerouting Delay Placing a check mark in the check box to the left of the Rerouting Delay option enables rerouting delay. This option is only applicable if the configured director is in a multiswitch fabric. The default state is enabled. 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 director 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. 3-4 director product manager user guide

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3–4
director product manager user guide
Configuring the Director
part of the request). If the requested domain ID is not allocated to the fabric, the
domain ID is assigned to the requesting director. If the requested domain ID is already
allocated, an unused domain ID is assigned. Note that you must set the director offline
before you can change to the preferred domain ID.
The preferred domain ID must be unique for each director and switch in a fabric. If
two switches or directors have the same preferred domain ID, the E_Ports segment,
causing the fabric to segment.
For more information on domain ID, refer to the section on domain ID assignment for
multiswitch fabrics in the
hp StorageWorks high availability planning guide
for
details.
Insistent
This option is not supported unless the SANtegrity binding feature is installed. Click
the 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. See the
following notes:
This option is required if Enterprise Fabric Mode (optional SANtegrity binding
feature) is enabled.
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 director with a duplicate domain ID exists in the fabric, both directors'
E_Ports will segment when they try to join.
Rerouting Delay
Placing a check mark in the check box to the left of the
Rerouting Delay
option
enables rerouting delay. This option is only applicable if the configured director is in a
multiswitch fabric. The default state is enabled.
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 director 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.