Fabric OS Reference Manual (Version 3.0)

1-106 Fabric OS Reference

Telnet Commands

iodSet

Turn on In Order Delivery (IOD) option.

Synopsis iodSet

Availability admin

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. When topology changes occur, generally,

some frames are delivered out of order. This command insures that frames are not delivered

out-of-order, even during fabric topology changes.

The default behavior is for the IOD option to be off.

This command should be used with care, because it can cause a delay in the establishment of a new

path when a topology change occurs. Only if there are devices connected to the fabric that do not

tolerate occasional out of order delivery of frames, should this command be used.

Operands None.

Examples To turn on the IOD option: