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Lenovo Flex System EN6131 Product Manual page 5

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Figure 2. Location of the I/O module bays in the Flex System chassis
The Flex System EN6131 40Gb Ethernet Switch can be installed in bays 1, 2, 3, and 4 of the Enterprise
Chassis. A supported Ethernet adapter must be installed in the corresponding slot of the compute node.
In the compute nodes that have an integrated dual-port 10 GbE network interface controller (NIC), NIC
ports are routed to bays 1 and 2 with a specialized periscope connector, and the adapter is not required.
However, when needed, the periscope connector can be replaced with the adapter. In such a case, the
integrated NIC is disabled.
4-port 10 GbE adapters: With 4-port 10 GbE adapters, only up to two adapter ports can be used with the
EN6131 switches (one port per switch).
8-port 10 GbE adapters: 8-port 10 GbE adapters are not supported by the EN6131. See Table 5 for a list
of supported adapters.
Table 3 shows compatibility information for the EN6131 and Flex System chassis.
Table 3. Flex System chassis compatibility
Description
Lenovo Flex System EN6131 40Gb Ethernet Switch
The connections between the adapters that are installed in the compute nodes to the EN6131 switches
that are installed in the chassis I/O bays are shown in Figure 3. The figure also shows both half-wide
compute nodes, such as the x240 with two adapters, and full-wide compute nodes, such as the x440 with
four adapters.
Lenovo Flex System EN6131 40Gb Ethernet Switch
Part
Enterprise
number
Chassis
with CMM
90Y9346
Yes
Enterprise
Carrier-Grade
Chassis
Chassis with
with CMM2
CMM2
Yes
No
5

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