Reference Guide

• The following table describes the fanout feature on ports and the number of available ports per port
pipe:
Table 66. Fanout feature on ports
Configuration Available Ports (Per Pipe)
Each port Pipe: Any 12 Ports fanout. 12 ports fanout (4 * 10G) & 4 40G only ports
Each port Pipe: Any 13 Ports fanout. 13 ports fanout (4 * 10G) & 3 ports disabled
• If you configure 12 ports as fanout in each pipe, the system determines the ports that are not defined
for fanout and configures them as 40G ports. Entries in the port table are revised accordingly. If you
configure 13 ports as fanout in each pipe, the system identifies the three ports in each pipe that are
not configured in Fanout mode and deletes those entries from the port table. This removal of entries
ensures that ports are not created for such pipes.
• Entity MIB that uses static port configuration supports all of the ports, including those ports that are
configured for fanout.
• When you configure 26 ports as fanout, six ports are disabled. For disabled ports, interfaces are not
created.
• When you insert an optic into one of the disabled ports, a system logging message generates
indicating that a 40GE QSFP optic has been inserted into a disabled port.
• You can configure a disabled port as a fanout port when the maximum limit is not exceeded. This
behavior reduces the number of reloads required to configure a disabled port in Quad mode to Non-
quad mode.
• When you configure 13 ports as fanout, a warning message is displayed stating that the maximum
number of ports that you can configure in Quad mode has been reached. The extra ports are disabled
the next time you reload the system.
• When you attempt to configure fanout on the ports where fanout feature is not supported, a warning
message displays stating that Quad mode ports limit has been reached and that you cannot configure
additional ports.
• For theshow hardware command, the valid range for the port-range parameter is from 0-127.
• Internal ports mapped to global ports may vary depending on the configured attributes. The show
hardware
command output using these internal ports is realigned according to the configured
settings.
• To view the disabled ports, you can use thedisabled-ports keyword with the show system
stack-unit 0
command.
• Before you configure the last available port in Quad mode, you are prompted to confirm whether you
want to configure the port Fanout mode, as shown in the following example.
Dell(conf)#stack-unit 0 port 0 portmode quad
Maximum number of ports that can be made Quad mode in the range <0-63> is
configured. Ports 12,16,60, will be disabled on reload.
Do you wish to continue? [confirm yes/no]:yes
Please save and reset unit 0 for the changes to take effect.
The following figure shows 26 ports configured in Quad mode. Ports X(52, 56, 60) and Y( 64, 68, 72) are
disabled (shown in red).
974
S-Series Debugging and Diagnostics