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OSA-Express3-2P Gigabit Ethernet SX
The OSA-Express3-2P Gigabit Ethernet (GbE) short
wavelength (SX) feature has two ports which reside on a
single PCIe adapter and share one channel path identifi er
(CHPID). Each port supports attachment to a one Gigabit
per second (Gbps) Ethernet Local Area Network (LAN).
OSA-Express3 GbE SX supports CHPID types OSD and
OSN. It can be defi ned as a spanned channel and can be
shared among LPARs within and across LCSSs.
Four-port exploitation on OSA-Express3 GbE SX and LX
For the operating system to recognize all four ports on an
OSA-Express3 Gigabit Ethernet feature, a new release
and/or PTF is required. If software updates are not applied,
only two of the four ports will be “visible” to the operating
system.
Activating all four ports on an OSA-Express3 feature pro-
vides you with more physical connectivity to service the
network and reduces the number of required resources
(I/O slots, I/O cages, fewer CHPIDs to defi ne and manage).
Four-port exploitation is supported by z/OS, z/VM, z/VSE,
z/TPF, and Linux on System z.
OSA-Express3 1000BASE-T Ethernet
The OSA-Express3 1000BASE-T Ethernet feature has
four ports. Two ports reside on a PCIe adapter and share
a channel path identifi er (CHPID). There are two PCIe
adapters per feature. Each port supports attachment to
either a 10BASE-T (10 Mbps), 100BASE-TX (100 Mbps), or
1000BASE-T (1000 Mbps or 1 Gbps) Ethernet Local Area
Network (LAN). The feature supports auto-negotiation and
automatically adjusts to 10, 100, or 1000 Mbps, depending
upon the LAN. When the feature is set to autonegotiate,
the target device must also be set to autonegotiate. The
feature supports the following settings: 10 Mbps half or full
duplex, 100 Mbps half or full duplex, 1000 Mbps (1 Gbps)
full duplex. OSA-Express3 1000BASE-T Ethernet supports
CHPID types OSC, OSD, OSE, and OSN. It can be defi ned
as a spanned channel and can be shared among LPARs
within and across LCSSs.
When confi gured at 1 Gbps, the 1000BASE-T Ethernet
feature operates in full duplex mode only and supports
jumbo frames when in QDIO mode (CHPID type OSD).
OSA-Express3-2P 1000BASE-T Ethernet
The OSA-Express3-2P 1000BASE-T Ethernet feature has
two ports which reside on a single PCIe adapter and share
one channel path identifi er (CHPID). Each port supports
attachment to either a 10BASE-T (10 Mbps), 100BASE-TX
(100 Mbps), or 1000BASE-T (1000 Mbps or 1 Gbps) Ether-
net Local Area Network (LAN). The feature supports auto-
negotiation and automatically adjusts to 10, 100, or 1000
Mbps, depending upon the LAN. When the feature is set to
autonegotiate, the target device must also be set to auto-
negotiate. The feature supports the following settings: 10
Mbps half or full duplex, 100 Mbps half or full duplex, 1000
Mbps (1 Gbps) full duplex. OSA-Express3 1000BASE-T
Ethernet supports CHPID types OSC, OSD, OSE, and
OSN. It can be defi ned as a spanned channel and can be
shared among LPARs within and across LCSSs. Software
updates are required to exploit both ports.
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