6947axA.fm Draft Document for Review April 7, 2004 6:15 pm
240 IBM eServer zSeries 990 Technical Guide
attached to either LAN is able to automatically discover the Support Elements, assuming that
the LAN network allows NetBios to flow between the devices (allowing NetBios to flow is a
requirement for local HMC-to-SE communication, but it is not a requirement for remote
HMC-to-SE communication).
Figure A-7 Ethernet only - two-path wiring scenario
Additional connections to the Ethernet LAN
These may be made to expand the connectivity beyond the local HMC and SE (not applicable
to systems with FC 0075).
This scenario is shown in Figure A-8. If connections to previous generations of 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 HMC and SE from other systems.
zSeries 990
HMC
HMC
SE
SE