This article explains how to manage the QSFP ports on a N4000 Series switch, including; setting a 1 x 40Gb (gigabit) QSFP port into 4 x 10Gb QSFP ports, setting the 4 x 10Gb QSFP ports to a 1 x 40Gb QSFP port, verifying the 1 x 40Gb and 4 x 10Gb ports are available and configuring a QSFP port as stack ports.
To break out a 1 x 40Gb QSFP port on a N4000 Series switch into 4 x 10Gb ports, do the following:
1. Configure the QSFP port to be broken out.
console>enable
console#configure
console(config)#interface Fo1/1/1
console(config-if-Fo1/1/1)#hardware profile portmode 4x10g
2. Reboot the switch to transition the port into 4x10g mode.
This command will not take effect until the switch is rebooted.
console(config-if-Fo1/1/1)#do reload
Are you sure you want to reload the stack? (y/n)
3. Verify the 4 x 10Gb ports are available.
console>enable
console#show interfaces status
To change the 4 x 10Gb QSFP ports on a N4000 Series switch to a 1 x 40Gb QSFP port, do the following:
1. Configure the port.
console>enable
console#configure
console(config)#interface Fo1/1/1
console(config-if-Fo1/1/1)#hardware profile portmode 1x40g
2. Reboot the switch to transition the port into 1x40g mode.
This command will not take effect until the switch is rebooted.
console(config-if-Fo1/1/1)#do reload
Are you sure you want to reload the stack? (y/n)
3. Verify the 1 x 40Gb port is available.
console>enable
console#show interfaces status
To configure a QSFP port as a stack-port on a N4000 Series switch, do the following:
1. Configure the desired QSFP port from the default Ethernet mode to stack mode.
console>enable
console#config
console(config)#stack
console(config-stack)#stack-port fortygigabitethernet 1/1/1 stack
2. Reboot the switch to transition the port into stack mode.
console(config-if-Fo1/1/1)#do reload
Are you sure you want to reload the stack? (y/n)
3. Verify the 1 x 40Gb port or 4 x10Gb ports are in stack mode.
console>enable
console#show switch stack-ports