HP StorageWorks 1606 Brocade Fabric OS Command Reference v6.3.0 (53-1001337-01 - Page 226

2 dlsSet dlsSet Enables the dynamic load sharing (DLS) option. Synopsis dlsset Description Use this command to turn on DLS when a fabric change occurs. Routing is based on the incoming port and the destination domain. This means that all traffic coming in from a port (either from an E_Port or an FX_Port) and directed to the same remote domain is routed through the same output E_Port. Dynamic Load Sharing (DLS) optimizes fabric routing. When DLS is enabled and there are multiple equivalent paths to a remote domain, traffic is distributed among all these paths. Regardless of the setting of the DLS option, when a port comes online, its new route (selected out-port) is chosen to optimize load sharing. Whether pre-existing routes are recomputed or rebalanced is determined by the given DLS settings. Furthermore, when DLS is enabled, load sharing is recomputed after any one of the following events: • A change in the fabric occurs. • A local E_Port goes up or down. • A local FX_Port goes down. During load sharing re-computation, existing routes may be moved to maintain optimal load balance. This may 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. Notes DLS is not supported in certain routing policies. If supported, the DLS option is on by default. Refer to aptPolicy help for more information on routing policies. The execution of this command is subject to Virtual Fabric or Admin Domain restrictions that may be in place. Refer to chapter 1, "Using Fabric OS commands" and Appendix A, "Command Availability" for details. 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 196 Fabric OS Command Reference 53-1001337-01