30 Splitting 40GbE QSFP+ Ports into 10GbE SFP+ Ports
upgrading all switches in the stack, save the configuration (using the write memory
command) and reload the stack to activate the new FTOS version (using the reload
command).
System Initialization
The Master Switch initializes the stack using the last saved system
configuration file.
If you change the stack configuration, be sure to save the configuration file.
The Master Switch automatically distributes the configuration file to the
member switches. If the Master Switch later becomes unavailable, the
Standby Master becomes the new Master Switch and configures the stack
with the latest configuration synchronized from the Master Switch.
In case of a split stack in which the Master Switch in one of the new stacks
was previously a member switch, the last saved configuration on the original
stack is used to configure the new stack.
Splitting 40GbE QSFP+ Ports into
10GbE SFP+ Ports
The MXL 10/40GbE Switch supports splitting a 40GbE port on the base
module or a 2-Port 40GbE QSFP+ module into four 10GbE SFP+ ports
using a 4x10G breakout cable.
NOTE: By default, the 40GbE ports on a 2-Port 40GbE QSFP+ module come up in
4x10GbE (quad) mode as eight 10GbE ports. On the base module, you must convert
the 40GbE ports to 4x10GbE mode as described below.
Before you attach a 4x10G breakout cable to a 40GbE QSFP+ port, ensure
that the following requirements are met:
• A 4x10GbE QSFP+ port cannot be used for stacking.
• In order for a 40GbE port to operate in 4x10GbE mode, you must enter
the
stack-unit port portmode quad
command.
FTOS(conf)# stack-unit unit-number port port-number
portmode quad
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