Service Manual

EXEC Privilege mode
tdr-cable-test tengigabitethernet slot/port
Between two ports, do not start the test on both ends of the cable.
Enable the interface before starting the test.
Enable the port to run the test or the test prints an error message.
2 Displays TDR test results.
EXEC Privilege mode
show tdr tengigabitethernet slot/port
Splitting QSFP Ports to SFP+ Ports
The platform supports splitting a single 40G QSFP port into four 10G SFP+ ports using one of the supported
breakout cables (for a list of supported cables, refer to the
Installation Guide or the Release Notes).
NOTE
: When you split a 40G port (such as fo 1/4) into four 10G ports, the 40G interface configuration is
still available in the startup configuration when you save the running configuration by using the write
memory command. When a reload of the system occurs, the 40G interface configuration is not applicable
because the 40G ports are split into four 10G ports after the reload operation. While the reload is in
progress, you might see error messages when the configuration file is being loaded. You can ignore these
error messages. Similarly, such error messages are displayed during a reload after you configure the four
individual 10G ports to be stacked as a single 40G port.
To split a single 40G port into four 10G ports, use the following command.
• Split a single 40G port into four 10G ports.
CONFIGURATION mode
stack-unit stack-unit-number port number portmode quad
• number: enter the port number of the 40G port to be split.
NOTE: To revert the port mode to 40G, use the no stack-unit stack-unit-number port port-
number portmode quad command.
Important Points to Remember
• Splitting a 40G port into four 10G ports is supported on standalone and stacked units.
• You cannot use split ports as stack-link to stack a system.
To verify port splitting, use the show system stack-unit stack-unit-number fanout {count |
configure}
command.
To verify port splitting, use the show system stack-unit stack—unit—number fanout {count |
configure}
command
• The quad port must be in a default configuration before you can split it into 4x10G ports. The 40G port
is lost in the configuration when the port is split; be sure that the port is also removed from other L2/L3
feature configurations.
Interfaces 505