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.