Configuring Switch Port Speed And Duplex Setting - Extreme Networks ExtremeWare XOS Guide Manual

Even though a port is disabled, the link remains enabled for diagnostic purposes.

Configuring Switch Port Speed and Duplex Setting

By default, the switch is configured to use autonegotiation to determine the port speed and duplex
setting for each port. You can manually configure the duplex setting and the speed of 10/100 Mbps
ports, and you can manually configure the duplex setting of Gigabit Ethernet ports.
10BASE-T and 100BASE-TX ports can connect to either 10BASE-T or 100BASE-T networks. By default,
the ports autonegotiate port speed. You can also configure each port for a particular speed (either 10
Mbps or 100 Mbps).
Gigabit Ethernet ports are statically set to 1 Gbps, and their speed cannot be modified.
To configure port speed and duplex setting, use the following command:
configure ports <port_list> auto off {speed [10 | 100 | 1000]} duplex [half | full]
To configure the system to autonegotiate, use the following command:
configure ports <port_list> auto on
Flow control is fully supported only on Gigabit Ethernet ports. Gigabit ports both advertise support and
respond to pause frames. 10/100 Mbps Ethernet ports also respond to pause frames, but do not
advertise support. Neither 10/100 Mbps or Gigabit Ethernet ports initiate pause frames.
Flow Control is enabled or disabled as part of autonegotiation. If autonegotiation is set to off, flow
control is disabled. When autonegotiation is turned on, flow control is enabled. ExtremeWare XOS does
not support turning off autonegotiation on the management port.
Turning Off Autonegotiation for a Gigabit Ethernet Port
In certain interoperability situations, you may need to turn autonegotiation off on a Gigabit Ethernet
port. Even though a Gigabit Ethernet port runs only at full duplex, you must specify the duplex setting.
NOTE
1000BASE-TX ports support only autonegotiation.
The following example turns autonegotiation off for port 1 (a Gigabit Ethernet port) on a module
located in slot 1 of a modular switch:
configure ports 1:1 auto off duplex full
The following example turns autonegotiation off for port 4 (a Gigabit Ethernet port) on a stand-alone
switch:
configure ports 4 auto off duplex full
Table 10 lists the support for autonegotiation, speed, and duplex setting for the various types of ports.
Table 10: Support for Autonegotiation on Various Ports
PHY
10 G
ExtremeWare XOS 10.1 Concepts Guide
Autonegotiation
Not configurable; On
Speed
10 G
Configuring Ports on a Switch
Duplex
Not configurable
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