Mellanox Technologies Mellanox SX1018 User Manual page 64

Specific ports can be split by using a QSFP 1X4 breakout cable to split one 40 Gb/s port into 4
lanes (4 SFP+ connectors). 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.
Splitting the interface deletes all configuration on that interface.
When using a port to split a data stream into 4-10Gb/s data streams (four lanes) one of the other
ports on the switch will be disabled (unmapped).
• which ports can be split into 4
• which ports can be split into 2
• which ports will be unmapped due to a 1X4 split
This port can be split into 4 10Gb/s SFP+
This port can be split into 2 10Gb/s SFP+
This port is unmapped by the neighboring split 4 port
The maximum number of 10 Gb/s Ethernet ports configu-
rable with this switch is 34.
Table 29 - Port Splitting Options
Can be split
Port #
to 4
1 —
2 —
3 YES
4 —
5 —
6 YES
7 —
8 —
9 YES
Figure 9: Port Splitting Options
Turns off port Can be split
# to 2
YES
—
2 —
YES
—
5 —
—
—
8 —
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10 YES
11 —
12 —
13 YES
14
15
16 YES
17 —
18 —
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Rev 1.6.9
11 —
—
—
14 —
—
YES
17 —
—
YES
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