Dell PowerVault 56F (16P Fibre Channel Switch) - Manual (Page 93)

support.dell.com PowerVault 56F 16-Port Fibre Channel Switch Commands 4-37
The iodReset command turns off the in-order delivery option. This command allows
out-of-order delivery of frames during fabric topology changes.
This is the default behavior and allows fast rerouting after a fabric topology change.
The iodSet command ensures that frames are not delivered out-of-order, even during
fabric topology changes. In a stable fabric, frames are always delivered in order, even
when the traffic between switches is shared among multiple paths. However, when
some topology change occurs in the fabric, for instance, a link goes down, traffic is
rerouted around the failure. In general, there is no guarantee in this case that some
frame, queued behind a congested link, will not be delivered after a frame that has
been transmitted later, but is now taking the new path.
This command should be used with care, because it causes a delay in the establish-
ment of a new path when a topology change occurs. Use this command only if there
are devices connected to the fabric that do not tolerate occasional out-of-order deliv-
ery of frames.
The default behavior is for the in-order delivery option to be off.
nLsuIn The number of Link State Updates received from the neighbor
switch
nLsaIn The number of Link State Acknowledges received from the neigh-
bor switch
attHloOut The number of attempted transmissions of Hello frames to the
neighbor switch
nHloOut The number of Hello frames transmitted to the neighbor switch
attLsuOut The number of attempted transmissions of Link State Updates to
the neighbor switch
nLsuOut The number of Link State Updates transmitted to the neighbor
switch
attLsaOut The number of attempted transmissions of Link State Acknowl-
edges to the neighbor switch
nLsaOut The number of Link State Acknowledges transmitted to the neigh-
bor switch
other The other fields represent internal FSPF variables
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