4–Switch Independent Partitioning
Switch Independent Partitioning Configuration
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You can modify the minimum and maximum bandwidth for each
switch-independent partition. The changes take effect immediately without
rebooting the server. The minimum and maximum bandwidths are specified as
percentages of the link bandwidth, where:
The minimum bandwidth is the minimum bandwidth guaranteed to a
partition.
The maximum bandwidth is the maximum value that a partition is permitted
to use.
Switch Independent Partitioning Options
The Switch Independent Partitioning feature in QLogic adapters provides the
ability to create multiple PCIe physical functions for each physical 10GbE port on
the adapter. Each PCIe function appears as an independent interface to the host
operating system or hypervisor.
When the adapter is configured as an Ethernet-only adapter, it contains eight
Ethernet functions.
By default, Switch Independent Partitioning functionality is disabled on the
adapters, having only two Ethernet functions enabled. Depending on the feature
personality mapping supported on the adapter, you can enable additional Ethernet
or storage functions.
The PCI function number assignment is as follows:
Functions 0 and 1 are always NIC, function 0 for port 1 and function 1 for
port 2; any of the other functions can be individually enabled or disabled.
Functions 2 and 3 can only be NIC personalities.
Functions 4 and 5 can be configured with either iSCSI or NIC personality.
Functions 6 and 7 can be configured with either FCoE or NIC personality.
You can configure at most one iSCSI and one FCoE personality for each
physical port.
NOTE
When bandwidth settings exist for both Switch Independent Partitioning and
DCBX,
DCBX takes precedence over Switch Independent Partitioning
.
DCBX sets the bandwidth for iSCSI and NIC traffic, and then Switch
Independent Partitioning sets the bandwidth for the NIC partitions by dividing
the NIC bandwidth allocated by DCBX. For more information, see
“Interoperation of Bandwidth Settings for DCBX and Switch Independent
Partitioning” on page 121
.