Owner's Manual

118 | Chapter 5. Configuring Slots and Ports on a Switch
NETGEAR 8800 User Manual
Note: With autonegotiation turned off, you cannot set the speed to 1000
Mbps.
In general, SFP gigabit Ethernet ports are statically set to 1 Gbps, and their speed cannot be
modified.
The 10 Gbps ports always run at full duplex and 10 Gbps.
To configure port speed and duplex setting, use the following command:
configure ports <port_list> {medium [copper | fiber]} auto off speed <speed>
duplex [half | full]
To configure the system to autonegotiate, use the following command:
configure ports <port_list> {medium [copper|fiber]} auto on {[{speed <speed>}
{duplex [half | full]}] | [{duplex [half | full]} {speed <speed>}]}
Note: The keyword medium is used to select the configuration medium for
combination ports. If port_list contains any non-combination ports,
the command is rejected.
XCM8800 does not support turning off autonegotiation on the management port.
Table 17 lists the support for autonegotiation, speed, and duplex setting for the various types
of ports.
Flow control on Gigabit Ethernet ports is enabled or disabled as part of autonegotiation (see
IEEE 802.3x). If autonegotiation is set to Off on the ports, flow control is disabled. When
autonegotiation is turned On, flow control is enabled.
With NETGEAR devices, the 1 Gbps ports and the 10 Gbps ports implement flow control as
follows:
• 1 Gbps ports
• Autonegotiation enabled
Table 17. Support for Autonegotiation on Various Ports
Port Autonegotiation Speed Duplex
10 Gbps Off 10000 Mbps Full duplex
1 Gbps fiber SFP GBIC On (default)
Off

1000 Mbps

Full duplex
10/100/1000 Mbps On (default)
Off
10 Mbps
100 Mbps
Full/half duplex
Full/half duplex