4-Port 10/100/1000 Base-TX PCI-Express Adapter (14106803)
The 4-Port 10/100/1000 Base-TX PCI-Express Adapter (14106803) supports the following additional configuration parameters:
- Transmit Descriptor Queue Size
- Indicates the number of transmit requests that can be queued for transmission by the adapter. Valid values range from 128 through 1024.
- Receive Descriptor Queue Size
- Indicates the maximum number of received Ethernet packets that the adapter can hold in its buffer. Valid values range from 128 through 1024.
- Software Transmit Queue Size
- Indicates the number of transmit requests that can be queued for transmission by the device driver. Valid values range from 512 through 16 384.
- Media Speed
- Indicates the speed at which the adapter attempts to operate.
The available speeds are 10 Mbps half-duplex, 10 Mbps full-duplex,
100 Mbps half-duplex, 100 Mbps full-duplex, 1000 Mbps full-duplex,
and autonegotiation. The default is autonegotiation. Select autonegotiate
when the adapter must use autonegotiation across the network to determine
the speed. When the network does not support autonegotiation, select
the specific speed. Note: 1000 Mbps half-duplex is not a valid value. The IEEE 802.3z specification dictates that the gigabit speeds for half-duplex must be autonegotiated for copper (TX)-based adapters. Select autonegotiation if this speed is required.
- Transmit Jumbo Frames
- When you set the attribute value to Yes, frames up to 9018 bytes in length can be transmitted on this adapter. When you set the attribute value to No, the maximum size of frames transmitted is 1518 bytes. Frames up to 9018 bytes in length can always be received on this adapter.
- Transmit TCP Resegmentation Offload
- Permits the adapter to perform resegmentation of transmitted TCP segments in hardware. With this capability, the host can use TCP segments that are larger than the actual MTU size of the Ethernet link, which can increase system performance. You can specify the Yes and No values.
- Enable Hardware Checksum Offload
- When you set the attribute value to Yes, the adapter calculates
the checksum for transmitted and received TCP frames. When you set
the attribute value to No, the checksum is calculated by appropriate
software. Note: The mbuf structure, which describes a transmitted frame, contains a flag that indicates whether the adapter calculates the checksum for the frame.
- Gigabit Backward Compatibility
- Forces the adapter to implement the IEEE 802.3z incorrectly. Older
gigabit TX equipment might not be able to communicate with the adapter.
Enable the option if the adapter is unable to communicate with your
older gigabit equipment. Important: If the option is enabled, the adapter cannot communicate with newer equipment. Enable the option only if you cannot obtain a link using autonegotiation, but can force a link at a slower speed (for example, 100 full-duplex).
- Failover Mode (failover)
- Indicates the requested failover configuration for the port. You
can specify the values of primary, backup, and disable.
You can change this attribute using SMIT.
Item Description primary Indicates the port is to act as the primary port in a failover configuration for a 2-port gigabit adapter. backup Indicates the port is to act as the backup port in a failover configuration for a 2-port gigabit adapter. disable Indicates the port is not a member of a failover configuration. This is the default value for failover.