5486IOA.fm Draft Document for Review October 18, 2004
368 IBM Eserver i5 and iSeries System Handbook
If two external SCSI ports are required, order a #5702. The #5705 is converted to
a #5702 when placed into
#5706 PCI-X 1Gbps Ethernet-TX IOA
The #5706 PCI-X 1Gbps Ethernet-TX IOA is a 2-port 1000/100/10 Mbps
Base-TX Ethernet PCI-X Adapter. The #5706 is a full duplex, dual ported, Gigabit
Ethernet adapter designed with highly integrated components. This adapter can
be configured to run each port at 1000, 100, or 10 Mbps data rates. This adapter
interfaces to the system via a PCI or PCI-X bus and connects to a network using
a 4-pair CAT-5 Unshielded Twisted Pair (UTP) cable for distances of up to 100m.
The adapter conforms to the IEEE 802.3ab 1000Base-T standard. The #5706
also supports jumbo frames when running at the 1000 Mbps speed.
i5/OS V5R3 for adapter #5706 does not supports a function called
Large Send or
sometimes known as
TCP Segmentation. This function offloads the TCP
segmentation operation from the IP layer to the adapter for outgoing (transmit
side) TCP segments. AIX 5L for POWER V5.2 or later supports this function
i5/OS V5R3 for adapter #5706 does not support a function known as
Checksum
Offload, which offloads the TCP/UDP Checksum Operation or workload from the
CPU to the adapter. AIX 5L for POWER V5.2 or later, SUSE LINUX Enterprise
Server 9 for POWER with 2.6 kernel can support these functions.
The #5706 IOA does not require a PCI IOP. The IOP functions are already
integrated into the IOA.
There are no additional restrictions of where the #5706 can be placed. The
system recognizes IOP-less cards and handles them appropriately, regardless of
where they are placed (in front of or behind IOPs).
Note the following restrictions:
The 1000 Mbps speed is not supported in half duplex (HDX) mode.
Systems Network Architecture (SNA) is not supported.
A cross-over cable is not supported.
It is supported in Models 520, 550, 570, or 595 with i5/OS V5R3.
Note: If either of these devices is daisy chained with another device, the
#0162 specify code must not be present.
Note: For optimum performance, place the adapter in a 64-bit PCI-X card slot
whenever possible.
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