Dell PowerEdge M710 Fabric OS Command Reference Manual Supporting Fabric - Page 450

2 iodSet iodSet Enables in-order delivery (IOD). Synopsis iodset iodset --help Description Use this command to enforce in-order delivery of frames during a fabric topology change. 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 instance, a link goes down), traffic is rerouted around the failure and some frames might be delivered out of order. This command ensures that frames are not delivered out-of-order, even during fabric topology changes. It enforces a sufficient delay between the event that causes an existing path to be removed and the establishment of a new path, so that frames are delivered in order. However, this also means that frames are dropped during the delay, causing I/O failures. When used without operands, iodSet enables in-order-delivery of frames on a switch (legacy IOD behavior). Frame loss is unavoidable when a port goes down. IOD is disabled by default. Use iodShow to display current settings. Use iodReSet to restore the default setting. Notes You can no longer use this command to manage lossless DLS. Use dlsSet instead. The following command options are deprecated in Fabric OS v6.4.0 and later: • iodset --enable -lossLessDls • iodset --disable -lossLessDls • iodset --show 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 This command has the following operands: --help Displays the command usage. Examples To display the default legacy IOD setting: switch:admin>iodshow IOD is not set To enable IOD: switch:admin> iodset IOD is set See Also iodShow, iodReset 418 Fabric OS Command Reference 53-1001764-02