The maximum number of single page clusters that can be allocated to network buffers. This limits the total memory that network buffers (mbufs) can consume.
Value
Default: 1/8 of physical memory
Range: Default - Total System Memory (in pages)
When to Change
For most workstations and small servers the default is sufficient. For very large systems larger values are appropriate. A 0 value tells the kernel to set the value (1/8 of physical memory) based on the amount of physical memory configured in the hardware.