Installation
Rev 1.6
Mellanox Technologies
38
Figure 41: SN2410 Cable Orientation
2.6.1 Breakout Cables and Adapters
A 100GbE port can be split to two 50GbE ports, or to four (or less) 25GbE ports, using a Mella-
nox breakout cable.
Splitting a 100GbE QSFP28 port to 4 separate 25GbE ports (using a breakout cable) disables
(unmaps) the 100GbE port below it. See
Figure 43,“SN2700 Splitting Options”.
2.6.1.1 Using Breakout Cables with MLNX-OS
When using this feature, you should log into the MLNX-OS® CLI and configure the individual
ports to be ‘split-2’ or ‘split-4’. For further information on Mellanox’s cable, visit
http://
www.mellanox.com/page/interconnect_overview.
2.6.1.2 Using Breakout Cables with Cumulus Linux
If you are using 4x10G direct attach copper cables or active optical cables, edit the /etc/cumu-
lus/ports.conf to enable support for these cables, then restart the switchd service using the
sudo systemctl restart switchd command. For more details, see Layer 1 and Switch
Port Attributes in the Cumulus Linux User Guide.
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