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port 5 into 2 lanes results in ports 1/5/1 and 1/5/2, and splitting it into 4 lanes results in
ports 1/5/1/1, 1/5/1/2, 1/5/2/1 and 1/5/2/2. For full notation schematics, see
Sample Breakout Cables
For more information on how to change the system’s profile to allow Split-Ready configuration, how
to change the module type to a split mode, and how to unsplit a split port, please refer to the
"InfiniBand Switching" chapter in the latest
MLNX-OS® User Manual
.
QM9700/QM9790 Splitting Options
All OSFP ports are splittable. Each OSFP cage contains two ports of 400G, and each port
can be split to two. There are no blocking requirements.
Port Notation Schematics
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•
The following behavior should be expected when disconnecting a 1:2 splitter cable (from
cages in both the upper and lower rows):
When you disconnect a cable marked as “1”, the CLI <cage number>/1 will always go
down, and the left LED of the cage will be turned off.
When you disconnect the cable marked as “2”, the CLI <cage number>/2 will always
go down, and the right LED of the cage will be turned off.
•
•
•
Splitting the interface deletes all configuration on that interface.
This feature is available only for Quantum ASIC systems.
In order to be able to use this feature, the system profile command must be
activated with split-ready configuration (cross-reference to system profile
command).