Juniper EX9214 Hardware Manual page 104

EX9214 Switch Hardware Guide
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NOTE:
Note the following when you configure rate selectability on an EX9200-12QS
line card:
When you boot the line card:
If rate selectability is not configured, all ports of the line card operate at
the default speed as four 10-Gigabit Ethernet interfaces.
If rate selectability is configured with invalid port speeds, all ports for
which invalid speeds were configured operate at the default speed.
If valid port speeds are configured, the ports operate at the configured
speeds.
When you change an existing port-speed configuration, for the configuration
to take effect, you must do either of the following:
Reset the PICs to which the configured ports belong, by using the
chassis pic pic-slot pic-slot-number fpc-slot fpc-slot-number (online | offline)
command. Because resetting the line card takes several minutes and
because it affects all the Packet Forwarding Engines, use this command
to apply your configuration changes quickly.
Reset the line card
An alarm is generated indicating the change in port-speed configuration.
When you change an existing port-speed configuration to an invalid
port-speed configuration and commit the configuration, an alarm is
generated indicating that the port-speed configuration is invalid. The port
continues to operate at the existing port speed.
You cannot configure rate selectability at the PIC level and the port level
simultaneously. Error messages are displayed when you try to commit such
configurations.
If you configure rate selectability at the port level, logical interfaces are
created only on the configured ports. No logical interfaces are created on
the other ports.
EX9200-12QS Line Card on page 66
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