Commands for Configuring Slots and Ports on a Switch
ExtremeWare XOS 11.5 supports only the Summit X450 family of switches and the BlackDiamond 8800 series switch.
ExtremeWare XOS 11.5 Command Reference Guide
320
configure ports preferred-medium
configure ports <port_list> preferred-medium [copper | fiber] {force}
Description
Configures the primary uplink port to use a preferred medium.
Syntax Description
Default
The default is determined at cable installation time.
Usage Guidelines
You specify either
copper
or
fiber
for the specified port. The switch evaluates the copper energy and
the fiber signal at the time these ports come online. If both are present, the configured preferred
medium is chosen; however, if only one is present, the switch brings up that medium and uses this
medium the next time the switch is rebooted. When a failure occurs and the uplinks are swapped, the
switch continues to keep that uplink assignment until another failure occurs or until the assignment is
changed using the CLI.
If you use the
force
option, it disables automatic failover. If you force the preferred-medium to fiber
and the fiber link goes away, the copper link is not used, even if available.
To display the preferred medium, use the
show port information detail
command (you must use
the
detail
variable to display the preferred medium).
Examples
The following establishes copper port 4 as the primary uplink on the Summit X450 series switch and
fiber port 4 as the redundant uplink port:
configure ports 4 preferred-medium copper
Copper port 4 becomes the primary uplink until a failure occurs on that link. At that time, fiber port 4
becomes the primary uplink and copper port 4 becomes the redundant port. This assignment stays in
place until the next failure.
port_list
Specifies the port number. On a stand-alone switch, this value is just the port number,
and on a modular switch, this value is the slot and port number.
copper
Specifies that the port should always use the 10/100/1000 BASE-T connection whenever
a link is established even when a fiber link is also present.
fiber
Specifies that the port should always use the 1 gigabit Ethernet fiber connection whenever
a link is established even when a copper link is also present.
force
Disables automatic failover. (If the specified preferred medium is not present, the link
does not come up even if the secondary medium is present.)
