Appendix A. Hardware Management Console (HMC) 241
Draft Document for Review April 7, 2004 6:15 pm 6947axA.fm
Figure A-8 Ethernet only - two-path wiring scenario with additional connections
Token ring and Ethernet wiring scenario
The token ring and Ethernet wiring scenario, shown in FigureA-9, is intended for enterprises
that have both token ring wiring and Ethernet wiring requirements. This scenario is included
to provide the possibility of controlling the Support Elements from both a token ring Hardware
Management Console and an Ethernet Hardware Management Console at the same time.
This wiring scenario is supported by the default set of adapters available with the Support
Elements and the token ring adapter on the Hardware Management Console. The token ring
adapter assumes the use of a 16 Mbit token ring facility. The Ethernet features assume the
use of 10/100 Mbit Ethernet facilities, requiring the use of CAT-5 Ethernet cabling.
For this scenario, the three communication protocols (SNA, TCP/IP and NetBios) used in
Support Element-to-Hardware Management Console communication are defined for both the
token ring and the Ethernet adapters of the Support Elements. The token ring wiring is
connected using the MAU as described in “Token ring only wiring scenario” on page236. The
Ethernet wiring is connected from the Support Elements to a customer-supplied local hub
capable of 10/100 Mbit Ethernet rates.
The Hardware Management Consoles attached to either LAN will be able to automatically
discover the Support Elements, assuming that the LAN network allows NetBios to flow
between the devices. The Ethernet adapter will have to be assigned an address on a
separate subnet from the token ring adapter.
Primary
Ethernet LAN
Secondary
Ethernet LAN
Token-Ring
Token-Ring
LAN
LAN
zSeries 990
Enterprise
LAN
SE
SE
zSeries 990
SE
SE Bridge
Bridge