IBM 990 - Manual (Page 114)

102 IBM
^
zSeries 990 Technical Guide
You can choose any one of the following settings for the OSA-Express 1000BASE-T Ethernet
feature:
Auto-negotiate
10 Mbps half-duplex or full-duplex
100 Mbps half-duplex or full-duplex
1000 Mbps/1Gbps full-duplex
LAN speed and duplexing mode default to auto negotiation. The OSA-Express 1000BASE-T
feature port and the attached switch automatically negotiate these settings. If the attached
switch does not support auto-negotiation, the port enters the LAN at the default speed of
1000 Mbps and full duplex mode.
The 1000BASE-T Ethernet feature can be configured as CHPID type OSC, OSD, or OSE.
Non-QDIO operation mode requires CHPID type OSE. When configured at 1 Gbps, the
1000BASE-T Ethernet feature has the same attributes as the fiber Gigabit Ethernet features:
operates in QDIO mode only (OSD CHPID type), carries TCP/IP packets only, operates in
full-duplex mode only, supports jumbo frames, and supports checksum offload.
OSA-Express Integrated Console Controller (OSA-ICC)
The 1000BASE-T Ethernet feature also provides the OSA-Express Integrated Console
Controller (OSA-ICC) function, which supports TN3270E (RFC 2355) and non-SNA DFT
3270 emulation. The OSA-ICC function uses a new definition as OSC CHIPD and console
controller, and has multiple logical partitions support, both as shared or spanned channels.
With the OSA-ICC function, 3270 emulation for console session connections is integrated in
the z990 via a port on the OSA-Express 1000BASE-T Ethernet feature. This can help
eliminate the requirement for external console controllers, like 2074 or 3174, helping to
reduce cost and complexity. Each port can support up to 120 console session connections.
OSA-ICC can be configured on a port-by-port basis, and is supported at any of the feature
settings (10, 100, 1000 Mbps, half or full-duplex).
OSA-Express Fast Ethernet (feature code 2366, upgrade only)
The z990 OSA-Express Fast Ethernet (FENET), feature code 2366, can only be brought
forward on an upgrade . The replacement adapter for new orders is the z990 OSA-Express
1000BASE-T Ethernet feature (feature code 1366).
The z990 OSA-Express FENET feature occupies one I/O slot in the z990 I/O cage and has
two independent ports, with one PCHID associated with each port.
Each port supports connection to either a 100 Mbps or 10 Mbps Ethernet LAN. The LAN must
conform either to the IEEE 802.3 (ISO/IEC 8802.3) standard or the Ethernet V2.0
specifications, and the 10BASE-T or 100BASE-TX standard transmission schemes.
Each port has an RJ-45 receptacle for cabling to an Ethernet switch that is appropriate for the
LAN speed. The RJ-45 receptacle is required to be attached using EIA/TIA category 5
unshielded twisted pair (UTP) cable with a maximum length of 100 m (328 ft).
You can choose any one of the following settings for the OSA-Express FENET feature:
Auto negotiate
10 Mbps half-duplex or full-duplex
100 Mbps half-duplex or full-duplex
LAN speed and/or the duplex mode can be set explicitly, using OSA/SF or the OSA Advanced
Facilities function of the z990 server hardware management console (HMC). The explicit