Typical Configurations - Lenovo Flex System EN2092 Product Manual

1gb ethernet scalable switch

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Typical configurations

Prior to Networking OS 7.8, compute nodes with 4-port network adapters required Upgrade 1 for the

EN2092 to enable connectivity on all four adapter ports despite of number of compute nodes and external

connections used. With the introduction of flexible port mapping in Networking OS 7.8, if the Flex System

chassis is not fully populated with the compute nodes that have four network ports, there might be no

need to buy Upgrade 1.

Consider the following scenario. You are planning to install ten x240 compute nodes with EN2024

adapters or ten high-density x222 compute nodes that will be connected to two EN2092 switches installed

in I/O bays 1 and 2. You are also planning to use four external 1 GbE ports on each EN2092 for the

connectivity to the upstream network. In this scenario, the total number of 1 GbE ports needed per one

EN2092 is 24. The base switch supplies required 24 port licenses; therefore, the solution can be

implemented without the need to buy Upgrade 1.

Figure 6. EN2092 flexible port mapping with EN2024 4-port adapter card

The solution components used in the scenario shown in Figure 10 are listed in Table 11.

Table 7. EN2092 flexible port mapping with EN2024 4-port adapter card

Diagram

Description

reference

Flex System x240 Compute Node or other supported compute node

Flex System EN2024 4-port 1Gb Ethernet Adapter

Flex System Enterprise Chassis with additional power supplies and

fan modules if needed

Flex System EN2092 1Gb Ethernet Scalable Switch

Part

Quantity

number

Varies

Up to 10

49Y7900

1 per compute

node

8721A1G

49Y4294

2 per chassis

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