Dell Emulex Family of Adapters - Manual (Page 435)

OneCommand Manager Command Line Interface Version 10.2 User Manual P010067-01A Rev. A
5. CLI Client Command Descriptions
Profile Management Commands
435
Note: (pN) labels are the port parameter names to use in the
SetAdapterPortConfig command (e.g. p0=NIC,FCoE p1=NIC,iSCSI).
Setting NPar Bandwidths
After enabling NPar with the SetAdapterPortConfig command, default bandwidths are
set for each partition that is enabled. Use the CMSetBW command to configure new
bandwidths if the default bandwidths are not acceptable. See “CMSetBW” on page 345
for more information.
Note: A partition is referred to as a channel in the CMSetBW help.
The number of bandwidth combinations that need to be specified depend upon the
adapter model. See “CMGetParams” on page 342 to determine how many bandwidths
need to be specified for a port by looking at the number of functions indicated in the
“Func #” column.
Note: If too many or too few minimum and maximum bandwidth combinations are
provided, an error is generated.
The total of the minimum bandwidths for the enabled functions, such as partitions
assigned protocols, must add up to 100. While you are allowed to set the minimum
bandwidths on some enabled functions to 0, you are not allowed to set them all to 0.
The maximum bandwidth of a partition must be greater than or equal to the minimum
bandwidth for that partition up to a maximum of 100. The minimum and maximum
bandwidths on disabled functions, those configured for “None”, must be 0.
Notes:

A reboot is not required for bandwidth changes take effect when channel
management is enabled or when currently running NPar on the adapter.

Unlike UMC or SIMode, setting the minimum and maximum bandwidths to
zero will not bring the logical link down on the NPar function nor prevent
receiving or transmitting packets on that function as a small amount of network
traffic trickles through.
Default NPar Bandwidths
After enabling or disabling NParEP Mode or NPar, the default bandwidths that are
automatically assigned to each partition with an assigned protocol have minimum and
maximum bandwidths. The default minimum bandwidths are set by dividing 100 by
the number of partitions with assigned protocols to run on them. This may cause an
uneven distribution when 100 divides evenly by the number of partitions; meaning
some partitions minimum bandwidths may be one greater than others. The maximum
bandwidth defaults to 100 for all partitions with assigned protocols.
Note: If default bandwidths are not desirable, use the CMSetBW command to
configure the minimum and maximum bandwidths. See “CMSetBW” on
page 345 for more information.