6947axA.fm Draft Document for Review April 7, 2004 6:15 pm
238 IBM eServer zSeries 990 Technical Guide
The Ethernet features assume the use of 10/100 Mbit Ethernet facilities, requiring the use of
CAT-5 Ethernet cabling.
Since the Support Element Ethernet only feature includes two Ethernet adapters, there will be
two Ethernet connections available. For this scenario, only the Ethernet cable connected to
the Ethernet in the first (top) PCMCIA slot of the Support Elements will be used.
The three communication protocols (SNA, TCP/IP, and NetBios) used in Support
Element-to-Hardware Management Console communication are defined for both adapters in
the PCMCIA slots of the Support Elements.
It will be necessary to connect the “top” Ethernet adapter cable to a customer-supplied local
hub capable of 10/100 Mbit Ethernet rates. It will be necessary to connect the Ethernet from
the Hardware Management Console to either the same hub as the Support Elements, or to a
hub that connects to the Support Element hub.
Figure A-5 Ethernet only - one path wiring scenario
Additional connections to the Ethernet LAN
Additional connections to the Ethernet LAN may be made to expand the connectivity beyond
the local Hardware Management Console and Support Element; see FigureA-6.
If connections to previous generations of IBM Enterprise Server systems are desired, they
may be connected using Ethernet-to-token ring bridges.
If connection to the enterprise LAN is desired, it is recommended that an Ethernet bridge or
router be installed to isolate the Hardware Management Console and Support Element from
other systems.
zSeries 990
HMC
HMC
SE
SE