Cabling a dual-interconnect configuration

Procedures for cabling theThinkAgile CP dual-interconnect switch configuration.

Hardware management network connections (dual-interconnect configuration)

Connect the following ports to the management switch:

• Primary interconnect port 47 using a SFP+ Direct Attach Cable (DAC)

• Compute block port (C.M.) using a RJ45 patch cable

• Upper storage block port (S.U.M.) using a RJ45 patch cable

• Lower storage block port (S.L.M.) using a RJ45 patch cable

Figure 1. Hardware management network connectivity in a dual—interconnect configuration

Note

If not using the Lenovo ThinkSystem NE0152T RackSwitch as the management switch, you may require different cables for the management network connections.

Compute block connections (dual-interconnect configurations)

The compute block consists of an enclosure with up to four compute nodes, which are numbered as follows:

Connect the compute nodes according to the populated compute node location and the corresponding port mapping. The cables to be used are clearly labeled; make sure that you use the correct cables.

You need two SFP+ Direct Attach Cables (DACs) for each populated compute node.

The compute block port mapping is as follows:

Front compute node location	Back network port mapping	Network interconnect port
Top left	Compute node 3, port 1 (C.3.1)	Primary interconnect, port 3
	Compute node 3, port 2 (C.3.2)	Secondary interconnect, port 3
Top right	Compute node 4, port 1 (C.4.1)	Primary interconnect, port 4
	Compute node 4, port 2 (C.4.2)	Secondary interconnect, port 4
Bottom left	Compute node 1, port 1 (C.1.1)	Primary interconnect, port 1
	Compute node 1, port 2 (C.1.2)	Secondary interconnect, port 1
Bottom right	Compute node 2, port 1 (C.2.1)	Primary interconnect, port 2
	Compute node 2, port 2 (C.2.2)	Secondary interconnect, port 2

Note

You only need to cable the number of compute nodes that are installed in the compute enclosure.

Figure 2. Dual—interconnect configuration — compute node and network interconnect connections

Storage block connections (dual-interconnect configurations)

Connect the storage controllers according to the populated controller location and corresponding port mapping and interconnect. The cables to be used are clearly labeled; make sure that you use the correct cables.

You need eight Category 6 patch cables and eight SFP+ transceivers. Attach a single SFP+ transceiver to each patch cable.

The storage block port mapping is as follows:

Front storage controller location	Back network port mapping	Network interconnect port
Upper	Upper storage controller, port 1 (S.U.1)	Primary interconnect, port 17
	Upper storage controller, port 2 (S.U.2)	Primary interconnect, port 20
	Upper storage controller, port 3 (S.U.3)	Secondary interconnect, port 17
	Upper storage controller, port 4 (S.U.4)	Secondary interconnect, port 20
Lower	Lower storage controller, port 1 (S.L.1)	Primary interconnect, port 21
	Lower storage controller, port 2 (S.L.2)	Primary interconnect, port 24
	Lower storage controller, port 3 (S.L.3)	Secondary interconnect, port 21
	Lower storage controller, port 4 (S.L.4)	Secondary interconnect, port 24

Figure 3. Dual—interconnect configuration — storage block and network interconnect connections

Peer-link connection (dual-interconnect configuration)

Set up the peer link between the interconnects using the QSFP+ Direct Attach Cables (DACs) that are provided with the configuration.

1. Connect port 49 on the primary interconnect to port 49 on the secondary interconnect.

2. Connect port 50 on the primary interconnect to port 50 on the secondary interconnect.

Figure 4. Dual-interconnect configuration — inter-interconnect link network connectivity