Interfaces | 245
To test the condition of cables on 100/1000/10000 BASE-T modules, following these steps using the
tdr-cable-test command.
Splitting QSFP Ports to 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.
Step Command Syntax Command Mode Usage
1
tdr-cable-test tengigabitethernet
<slot>/
<port>
EXEC Privilege To test for cable faults on the
TenGigabitEthernet cable.
• Between two ports, you must not start the
test on both ends of the cable.
• Enable the interface before starting the
test.
• The port must be enabled to run the test or
the test prints an error message.
2
show tdr tengigabitethernet <slot>/<port> EXEC Privilege Displays TDR test results.
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.
Command Syntax Command Mode Purpose
stack-unit stack-unit port number
portmode quad
CONFIGURATION Split a single 40G port into 4-10G ports.
stack-unit: Enter the stack member unit identifier of the stack
member to reset.
Range: 0 to 5
To display the stack-unit number, enter the show system brief
command.
port <port number>: Enter the port number of the 40G port to
be split.
Valid values on base module: 33 or 37; OPTM SLOT 0: 41
or 45; OPTM SLOT 1: 49 or 53.
portmode quad: Identifies the uplink port as a split 10GbE
SFP+ port.
Then save the configuration and reload the switch.
FTOS# write memory
FTOS#reload
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