Ethernet Only - Two Path Wiring Scenario - IBM zSeries 800 Installation Manual

v Ethernet only - two path wiring scenario
Figure 4-5. Ethernet only - two path wiring scenario
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zSeries 800: Installation Manual for Physical Planning
This "Ethernet only" wiring scenario is also intended for enterprises who currently
have Ethernet wiring and do not want Token Ring wiring introduced into their
environment. The two path scenario is included to provide the possibility of a
second, separate and redundant path to the Support Elements.
This wiring scenario requires that FC 0087 (a second Ethernet) be specified with
the Support Elements and that the Token Ring feature not be ordered with the
Hardware Management Console such that no Token Ring exists in either the
Support Elements or in the Hardware Management Console. 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, both the Ethernet cables 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 at least one local Hardware Management Console to
the same hub as the Support Elements.
It will be necessary to connect the "bottom" Ethernet adapter cable to a customer
supplied local hub capable of 10/100 Mbit Ethernet rates. This second adapter
will have to be assigned an address on a separate subnet from the first adapter.
Any 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.
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Level 04a, June 21, 2004