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On the zEC12, the install team must connect the Ethernet adapters for any HMC(s) into an Ethernet
switch. This switch can then be connected to J01 and J02 on the Bulk Power Hubs. (See Figure 18.)
"A" Side BPH
Additional Customer
LAN Network
Switch
1X
2X
3X
4X
9X
10X 11X 12X 13X 14X 15X 16X
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~
Figure 18. Two-switch configuration
This configuration is required because the Support Elements have no external connection to the
HMCs, and the Support Elements communicate only through the Bulk Power Hubs.
Notes:
1. Only Ethernet switches can connect to the customer ports J01 and J02 on the Bulk Power Hubs.
2. Never connect an HMC directly to J01 and J02 on the Bulk Power Hubs.
3. Never connect customer LANs to any ports other than J01 and J02 on the Bulk Power Hubs.
4. Customer LAN 1 should be plugged into J02 on the Bulk Power Hubs. Customer LAN 2 should be
plugged into J01 on the Bulk Power Hubs.
28xx Support Element Consoles
Switch
1X
2X
3X
4X
5X
6X
9X
10X 11X 12X 13X 14X 15X 16X
28xx Hardware Management Consoles
Switch
1X
2X
3X
4X
5X
6X
9X
10X 11X 12X 13X 14X 15X 16X
Other server Support Elements
1X
2X
3X
5X
6X
7X
8X
9X
10X 11X 12X 13X 14X 15X 16X
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~
~
Chapter 6. Hardware Management Console and Support Element communications
7X
8X
"B" Side BPH
7X
8X
Switch
4X
5X
6X
7X
8X
~
~
~
Level 01f
89
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