5486IOA.fm Draft Document for Review October 18, 2004368 IBM Eserver i5 and iSeries System HandbookIf two external SCSI ports are required, order a #5702. The #5705 is converted toa #5702 when placed into#5706 PCI-X 1Gbps Ethernet-TX IOAThe #5706 PCI-X 1Gbps Ethernet-TX IOA is a 2-port 1000/100/10 MbpsBase-TX Ethernet PCI-X Adapter. The #5706 is a full duplex, dual ported, GigabitEthernet adapter designed with highly integrated components. This adapter canbe configured to run each port at 1000, 100, or 10 Mbps data rates. This adapterinterfaces to the system via a PCI or PCI-X bus and connects to a network usinga 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 #5706also supports jumbo frames when running at the 1000 Mbps speed.i5/OS V5R3 for adapter #5706 does not supports a function called Large Send orsometimes known as TCP Segmentation. This function offloads the TCPsegmentation operation from the IP layer to the adapter for outgoing (transmitside) TCP segments. AIX 5L for POWER V5.2 or later supports this functioni5/OS V5R3 for adapter #5706 does not support a function known as ChecksumOffload, which offloads the TCP/UDP Checksum Operation or workload from theCPU to the adapter. AIX 5L for POWER V5.2 or later, SUSE LINUX EnterpriseServer 9 for POWER with 2.6 kernel can support these functions.The #5706 IOA does not require a PCI IOP. The IOP functions are alreadyintegrated into the IOA.There are no additional restrictions of where the #5706 can be placed. Thesystem recognizes IOP-less cards and handles them appropriately, regardless ofwhere 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 slotwhenever possible.
