Dlsset; Urouteshow - HP StorageWorks 2/64 - Core Switch Command Reference Manual

dlsSet

Enables the dynamic load sharing (DLS) option.
Synopsis
dlsset
Availability
admin
Description
Use this command to turn on DLS when a fabric change occurs.
Routing is generally based on the incoming port and the destination domain. This means that all the
traffic coming in from a port (either an E_Port or an Fx_Port) directed to the same remote domain is routed
through the same output E_Port.
To optimize fabric routing, when there are multiple equivalent paths to a remote switch, traffic is shared
among all the paths. Load sharing is recomputed when a switch is booted up or every time a change in
the fabric occurs. A change in the fabric is defined as an E_Port going up or down or an Fx_Port going
up or down.
During load sharing, recomputation, existing routes might be moved to maintain optimal balance. This
can cause momentary frame loss along these routes.
In contrast, if DLS is turned off (using dlsReset), load sharing calculations are used only to place new
routes. Once placed, existing routes are never moved from one output E_Port to another unless the
original output E_Port is no longer a recognized path to the remote domain. Optimal balance is rarely
achieved with this setting.
NOTE: DLS is not supported in certain routing policies. See
policies.
Operands
none
Examples
To enable the dynamic load sharing option:
switch:admin> dlsset
switch:admin> dlsshow
DLS is set
See also
aptPolicy
dlsReset
dlsShow
iodReset
iodSet
iodShow

uRouteShow

topologyShow
for more information on routing
aptPolicy
Fabric OS 5.x command reference guide 163