NEC ExpEther-2S, Руководство пользователя

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3.7.1 1:1 connection without using a network switch
Use one or two optical fiber cables or DA cables to directly connect the ExpEther board (40G)
mounted on the server and the ExpEther IO Expansion Unit (40G).
Important When you connect the cables directly, connect the QSFP+ port-1 of the
ExpEther board (40G) directly to the QSFP+ port-1 of the ExpEther IO
Expansion Unit (40G), and connect the QSFP+ port-2 of the ExpEther board
(40G) directly to the QSFP+ port-2 of the ExpEther IO Expansion Unit (40G).
You cannot connect QSFP+ port of the ExpEther board (40G) to a different port
of the ExpEther IO Expansion Unit (40G).
Important When you connect the ExpEther board (40G) directly to the ExpEther IO
Expansion Unit (40G), set the Group Id to the same value from 1 to 15. If you
set the Group Id to 0, you cannot connect the ExpEther board (40G) to the
ExpEther IO Expansion Unit (40G).
Refer to "3.5 Installing the ExpEther IO Expansion Unit (40G) and the option
card" for the detail.
Tips When you connect two ExpEther boards (40G) directly to one ExpEther IO
Expansion Unit (40G), connect the QSFP+ port-1 of the second ExpEther board
(40G) directly to the QSFP+ port-3 of the ExpEther IO Expansion Unit (40G) and
connect the QSFP+ port-2 of the second ExpEther board (40G) directly to the
QSFP+ port-4 of the ExpEther IO Expansion Unit (40G).
Important When you connect two ExpEther boards (40G) directly to the ExpEther IO
Expansion Unit (40G), set different Group IDs to two ExpEther boards (40G)
from 1 to 15. If you set same Group ID, the unit will not operate normally.
Important When you connect two ExpEther boards (40G) directly to one ExpEther IO
Expansion Unit (40G), you can only use PCIe slot 1/2 of the ExpEther board
(40G) connected to the QSFP+ port 1/2 of the ExpEther IO Expansion Unit
(40G). You cannot connect PCIe slot 3/4. On the contrary, you can only use
PCIe slot 3/4 of the ExpEther board (40G) connected to the QSFP+ port 3/4 of
the ExpEther IO Expansion Unit (40G). You cannot connect PCIe slot 1/2.
Tips At startup of the server, if the ExpEther board detects the ExpEther IO
Expansion Unit that has the same Group ID as this board itself, it connects the
I/O device to the server. The connected I/O device is recognized, by the OS, as
a PCI device.
If there are two or more ExpEther IO Expansion Units that have the same Group
ID, the ExpEther board connects the devices based on the order in which it
detected the Expansion Units. Therefore, the order of the PCI devices
recognized by the OS may vary, depending on the order in which ExpEther
board detected the Expansion Units.
QSFP+ port-1
QSFP+ port-2
QSFP+ port-1
QSFP+ port-2