Deployment Guide

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You can only split the 40G ports in the top row (odd numbered ports) on a 16X40G module. If you configure 4X10G on a 40G
interface, the subsequent even numbered interface is removed and unavailable for use.
The following example shows the interface status before splitting a 40G interface:
Dell# show interfaces status
Port Description Status Speed Duplex Vlan
Fo 1/15/1 Down 40000 Mbit Auto --
Fo 1/16/1 Down 40000 Mbit Auto --
The following example shows that when you split an interface on a 16X40G module, the subsequent even numbered interface is
removed from the configuration.
Dell(conf)# stack-unit 1 slot 3 port 15 portmode quad speed 10G
Warning: Enabling Quad mode on stack-unit 1 slot 3 port 15. Please verify whether the
configs related to interface Fo 1/3/15 Fo 1/3/16 are cleaned up before proceeding
further.
[confirm yes/no]:y
Quad mode is enabled on stack-unit 1 slot 3 port 15
The interface on stack-unit 1 slot 3 port 16 has been removed
%STKUNIT1-M:CP %IFMGR-5-DYNAMIC_FANOUT: Port 15 in slot 3 has been fanned-out
The following example shows that the even numbered interface is removed from the configuration:
Dell# show interfaces status
Port Description Status Speed Duplex Vlan
Te 1/3/15/1 Up 10000 Mbit Full --
Te 1/3/15/2 Up 10000 Mbit Full --
Te 1/3/15/3 Up 10000 Mbit Full --
Te 1/3/15/4 Up 10000 Mbit Auto --
The physical port is not present in the show inventory media command output:
Dell# show inventory media
Slot Port Type Media Serial Number Dell Qualified
-----------------------------------------------------------------------------------
1 1/15/1 QSFP 40GBASE-SR4 4829455N01XP Yes
1 1/15/2 QSFP 40GBASE-SR4 4829455N01XP Yes
1 1/15/3 QSFP 40GBASE-SR4 4829455N01XP Yes
1 1/15/4 QSFP 40GBASE-SR4 4829455N01XP Yes
Splitting QSFP Ports to SFP+ Ports
The platform supports splitting a single 40G QSFP port into four 10G SFP+ ports using one of the supported breakout cables
(for a list of supported cables, refer to the Installation Guide or the Release Notes).
NOTE:
When you split a 40G port (such as fo 1/4) into four 10G ports, the 40G interface configuration is still available in
the startup configuration when you save the running configuration by using the write memory command. When a reload
of the system occurs, the 40G interface configuration is not applicable because the 40G ports are split into four 10G ports
after the reload operation. While the reload is in progress, you might see error messages when the configuration file is
being loaded. You can ignore these error messages. Similarly, such error messages are displayed during a reload after you
configure the four individual 10G ports to be stacked as a single 40G port.
NOTE: You can split the 40G ports to 10G ports and vice —versa without reloading the device.
To split a single 40G port into four 10G ports, use the following command.
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Interfaces