Dell PowerSwitch S4820T Installing the S4820T System - Page 27

Important Points to Remember, Splitting QSFP+ Ports to SFP+ or RJ-45 Ports

Page 27 highlights

Important Points to Remember • The unit number with the split ports must be the default (stack-unit 0). To verify the unit number, use the show system brief command. If the unit ID is different than 0, renumber it to 0 before you split the ports by using the stack-unit id renumber 0 command in EXEC mode. • The quad port must be in a default configuration before you can split it into four 10G SFP+ ports. The 40G port is lost in the configuration when you split the port, so be sure to remove the port from other L2/L3 feature configurations. • For the split-port change to take effect, reload the system after issuing the command. Save your configuration. Splitting QSFP+ Ports to SFP+ or RJ-45 Ports The S4820T supports splitting a single 40G QSFP port into four 10G SFP+ ports or four 10G RJ-45 using one of the supported breakout cables. For the system to recognize the port type change, enter the stack-unit portmode command. For example: stack-unit stack-unit port number portmode quad • stack-unit: enter the stack member unit identifier of the stack member to reset. The range is from 0 to 7. • number: enter the port number of the 40G port to be split. The range is from 0 to 124 in increments of 4. Install the Hardware 27

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Important Points to Remember
The unit number with the split ports must be the default (stack-unit 0). To verify the unit number, use
the
show system brief
command. If the unit ID is different than 0, renumber it to 0 before you
split the ports by using the
stack-unit id renumber 0
command in EXEC mode.
The quad port must be in a default configuration before you can split it into four 10G SFP+ ports. The
40G port is lost in the configuration when you split the port, so be sure to remove the port from other
L2/L3 feature configurations.
For the split-port change to take effect, reload the system after issuing the command. Save your
configuration.
Splitting QSFP+ Ports to SFP+ or RJ-45 Ports
The S4820T supports splitting a single 40G QSFP port into four 10G SFP+ ports or four 10G RJ-45 using
one of the supported breakout cables.
For the system to recognize the port type change, enter the
stack-unit portmode
command. For
example:
stack-unit
stack-unit
port
number
portmode quad
stack-unit
: enter the stack member unit identifier of the stack member to reset. The range is from
0 to 7.
number
: enter the port number of the 40G port to be split. The range is from 0 to 124 in increments
of 4.
Install the Hardware
27