Breakout Cables And Adapters; Figure 43: Sn2740 Cable Orientation; Figure 44: Sn2410 Cable Orientation - Mellanox Technologies Spectrum SN2700 Hardware User Manual

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
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
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
lus/ports.conf
sudo systemctl restart switchd
Port Attributes
Rev 1.9

Figure 43: SN2740 Cable Orientation

Figure 44: SN2410 Cable Orientation

to enable support for these cables, then restart the switchd service using the
in the Cumulus Linux User
Mellanox Technologies
Figure 46,"SN2700 and S740 Splitting
command. For more details, see
Guide.
Installation
Options".
http://
/etc/cumu-
Layer 1 and Switch
47