Mellanox MLNX-OS User Manual for SX1018HP Ethernet Managed Blade Switch

Rev 2.10
Mellanox Technologies
383
Mellanox Technologies Confidential
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.
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
Figure 11: Port Splitting Options
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.
5.1.1.1 Changing the Module Type to a Split Mode
 To split a port of an interface:
Step 1. Shut down all the ports related to the interface. Run:
Splitting the interface deletes all configuration on that interface.
Table 42 - Port Splitting Options
Port #
Can be split
to 4
Turns off port
#
Can be split
to 2
1— YES10YES11—
2 — —11— —
3YES2 — 12 — —
4 — YES 13 YES 14 —
5— —14 —
6 YES 5 — 15 YES
7 — — 16 YES 17 —
8 — —17— —
9YES8 — 18 — YES