User`s guide

9 – Windows 2000 Driver Installation
QL2x00IP NDIS Network Driver Installation
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The QL2x00IP NDIS driver provides drive configuration parameters. The drive
configuration parameters are listed in table 9-1 and described in the following
paragraphs.
n MTU Size. This parameter specifies the maximum transfer or packet size that
the host system sends or receives. All QLA23xx HBAs on the same network
must have the same MTU size value. QLogic recommends a default value
of 8192.
n Buffer Count. This parameter specifies the number of receive buffers that the
QL2x00IP driver allocates during initialization. The number of buffers multiplied
by the buffer size must be greater than or equal to the MTU size. QLogic
recommends a default value of 32.
n Buffer Size. This parameter specifies the size of each receive buffer. The buffer
size multiplied by the number of buffers must be greater than or equal to the
MTU size. Incoming packets cannot be broken into more than 23 buffers.
Therefore, the buffer size multiplied by 23 must be at least as large as the MTU
size. QLogic recommends a default value of 4096.
n Header Split Size. This parameter accounts for packets with split headers and
data. The parameter value specifies the number of bytes at the beginning of an
incoming packet that must be isolated in the first receive buffer. A value of 0
indicates that the packet header and data are not split. QLogic recommends a
default value of 0.
n Adapter Node Name. This parameter specifies the world wide name (node
name) of the QLA23xx HBA to use for this IP connection. The parameter is
required on systems with more than one QLA23xx HBA. You can use Fast!UTIL
to determine the node names for all QLA23xx HBAs in the system (see the
Fast!UTIL section that corresponds to your QLA23xx HBA).
Table 9-1. Ql2x00ip.sys Configuration Parameters
Parameter Minimum Maximum Recommended Default
MTU Size 92 65280 8192
Buffer Count 8 128 32
Buffer Size 512 65536 4096
Header Split Size 24 Buffer size - 1 0
a
Adapter Node Name — — —
Tab le No tes
a
A value of 0 indicates that the headers and data are not split.