SwitchX®-2 18-Port QSFP FDR InfiniBand System Hardware User Manual
Rev 1.1
Mellanox Technologies
43
5
Cabling
5.1
SX6018 Splitting the Data Stream Using Breakout (Fanout) Cables
When the SX6018 switch is configured to run Ethernet protocol, specific ports can be split by
using a QSFP 1X4 breakout cable to split one 40 GbE port into 4 lanes (4 SFP+ connectors
10GbE each). These 4 lanes then go, one lane to each of the 4 SFP+ connectors. Some ports can
be split into 2 10 Gb/s ports, using lanes 1 and 2 only. When a QSFP port is split into 2 10Gb/s
ports then only SFP+ connectors #1 and #2 are used. Connectors #3 and #4 are left unconnected.
Using Figure 31 and Table 15, with breakout cables you can achieve 56 ports of 10Gb/s
Figure 30: Breakout or Fanout Cable
Figure 31: SX6018 Port Splitting Options
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
This port can be split into 4 10Gb/s SFP+
This port can be split into 2 10Gb/s SFP+
The maximum 10 Gb/s Ethernet ports configurable with this switch is 56.
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