Reference Guide

464 | Interfaces
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To test the condition of cables on 10/100/1000 BASE-T modules, use the tdr-cable-test command:
Splitting QSFP ports to SFP+ ports
Splitting QSFP ports to SFP+ ports is supported on platforms: Z
The S4810, S4820T and Z9000 platforms support splitting a single 40G QSFP port into four 10G SFP+
ports using one of the supported breakout cables (refer to the Installation Guide or the Release Notes for a
list of supported cables).
Important Points
• FANOUT is supported on 40G interfaces in Standalone as well as Stacking environments if the port is
not part of a stack link.
• Split ports cannot be used as stack link to stack an S4810, S4820T, or a Z9000.
• If a port is part of a stack link, it cannot support FANOUT configuration.
• The 40G port must be in a default configuration before it can be split into 4x10G ports.
• You will be prompted to save the configuration and reload the system for the change to take effect.
FTOS(conf)#stack-unit 0 port 48 portmode quad
Enabling quad mode on slot 0 port 48 will make interface configs of Fo 0/48 obsolete
after a save and reload.
Step Command Syntax Command Mode Usage
1
tdr-cable-test tengigabitethernet
<slot>/<port>
EXEC Privilege To test for cable faults on the GigabitEthernet
cable.
• Between two ports, the user must not start
the test on both ends of the cable.
• The user must enable the interface before
starting the test.
• The port should 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.
Command Syntax Command Mode Purpose
stack-unit stack-unit port
number portmode quad
CONFIGURATION Split a single 40G port into 4-10G ports on the S4810,
S4820T, or Z9000.
stack-unit: Enter the stack member unit identifier of the stack
member to reset.
Range: 0 to 11
number: Enter the port number of the 40G port to be split.
S4810 and S4820T Range: 0 to 47 for 10G ports; 48, 52, 56 and 60
for 40G ports.
Z9000 Range: 0 to 31