HP Brocade 4Gb SAN Switch for HP BladeSystem p-Class - Manual (Page 101)

Fabric OS 5.0.0 procedures user guide 101
To force in-order frame delivery across topology changes:
1. Connect to the switch and log in as admin.
2. Issue the
iodset
command.
NOTE: This command can cause a delay in the establishment of a new path when a topology change
occurs, and should be used with care.
To restore out-of-order frame delivery across topology changes:
1. Connect to the switch and log in as admin.
2. Issue the
iodreset
command.
Using dynamic load sharing
The device-based and exchange-based routing policies depend on the Fabric OS dynamic load sharing
feature (DLS) for dynamic routing path selection. When these policies are in force, DLS must be 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 when a
switch boots up, or each time an E_Port or Fx_Port goes online or offline.
To check and set DLS:
1. Connect to the switch and log in as admin.
2. Issue the
dlsshow
command to view the current DLS setting.
One of the following messages appears:
• DLS is set means that dynamic load sharing is turned on.
• DLS is not set means that dynamic load sharing is turned off.
3. Issue the
dlsset
command to enable DLS or issue the
dlsreset
command to disable it.
You cannot disable DLS when device-based or exchange-based routing policies are in effect.
Example:
switch:admin> dlsshow
DLS is not set
switch:admin> dlsset
switch:admin> dlsshow
DLS is set
switch:admin> dlsreset
switch:admin> dlsshow
DLS is not set