HP StorageWorks Fabric OS 5.X Advanced Web Tools Administrator Guide (AA-RVHYB-TE, September 2005)

Fabric OS 5.x Advanced Web Tools administrator guide 73
3. Perform the following, according to switch type:
• For Core Switch 2/64, SAN Director 2/128, or 4/256 SAN Director, click a slot number under
the Static Route category in the navigation tree. Click Add.
• For 4/8 SAN Switch, 4/16 SAN Switch, SAN Switch 2/8V, SAN Switch 2/16V, SAN Switch
2/32, 4Gb SAN Switch for HP p-Class BladeSystem, and SAN Switch 4/32, click the Static Route
category in the navigation tree. Click Add.
A new blank line appears in the window. Note that when device-based or exchange-based routing
policies are in effect, the Static Route category is not displayed in the navigation tree.
4. Enter the In Port number for the route.
5. Enter the Destination Domain.
The destination domain IDs match the outports in the cell.
6. Enter the Out Port number for the route.
7. Click OK to add the static route.
8. Click Apply.
Enabling and disabling dynamic load sharing
The device-based and exchange-based routing policies depend on the Fabric OS DLS for dynamic routing
path selection. When these policies are in force, DLS is always enabled and cannot be disabled.
When the port-based policy is in force, you can enable DLS to optimize routing. When DLS is enabled, it
shares traffic among multiple equivalent paths between switches. DLS recomputes load sharing either
when a switch boots up or each time an E_Port or Fx_Port goes online or offline. Enabling this feature
allows a path to be discovered by the FSPF path-selection protocol.
For more information regarding DLS, see the dlsset command in the HP StorageWorks Fabric OS 5.x
command reference guide.
When you enable or disable DLS for the Core Switch 2/64 or for a SAN Director 2/128 or 4/256 SAN
Director configured for two logical switches, the DLS is enabled or disabled on a logical-switch basis. This
means that for each logical switch, you must enable or disable DLS individually.
Configuring the DLS setting
1. Launch the Switch Admin module as described on page 36.
2. Select the Routing tab.
3. Click On in the Dynamic Load Sharing area to enable DLS or click Off to disable DLS.
Note that when device-based or exchange-based routing policies are in effect, the DLS radio buttons
are not displayed in the Routing tab.
4. Click Apply.
Specifying frame order delivery
In a stable fabric, frames are always delivered in order, even when the traffic between switches is shared
among multiple paths. However, when topology changes occur in the fabric (for example, if a link goes
down), traffic is rerouted around the failure, and some frames could be delivered out of order.
By default, frame delivery is out-of-order across topology changes. However, if the fabric contains
destination devices that do not support out-of-order delivery, you can force in-order frame delivery across
topology changes.
Enabling in-order delivery (IOD) guarantees that frames are either delivered in order or dropped. For
more information regarding IOD, see the HP StorageWorks Fabric OS 5.x administrator guide.
When you enable or disable IOD for the Core Switch 2/64 or for a SAN Director 2/128 or 4/256 SAN
Director configured for two logical switches, IOD is enabled or disabled on a logical-switch basis. This
means that for each logical switch, you enable or disable IOD individually.