Note
Refer to Displaying Port Information for information on displaying port speed, duplex, autonegotiation, and flow control settings.Note
Stacking ports always use the same type of connector and copper PHY, which are built in to the Summit family switches. You cannot configure stacking port parameters such as port speed, duplex, and link fault signal. You also cannot configure data port features such as VLANs and link aggregation.Autonegotiation determines the port speed and duplex setting for each port (except 10 and 40 Gbps ports). You can manually configure the duplex setting and the speed of 10/100/1000 Mbps ports.
The 10/100/1000 Mbps ports can connect to either 10BASE-T, 100BASE-T, or 1000BASE-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).
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.
However, there are two SFPs supported by Extreme that can have a configured speed:
100 FX SFPs, which must have their speed configured to 100 Mbps.
100FX/1000LX SFPs, which can be configured at either speed.
The 10 Gbps ports always run at full duplex and 10 Gbps. The 40 Gbps ports always run at full duplex and 40 Gbps.
Note
For switches that do not support half-duplex, the copper switch ports must have auto negotiation disabled and full duplex enabled when connecting 10/100/1000 Mbps devices that do not auto negotiate. If the switch attempts and fails to auto negotiate with its partner, it will fail to link up. A non-negotiating connected device must also be manually configured for full duplex or packet loss and port errors will occur each time it detects a collision.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.
When upgrading a switch running ExtremeXOS 12.3 or earlier software to ExtremeXOS 12.4 or later, saved configurations from combo ports (copper or fiber) are applied only to combo ports fiber medium. When downgrading from ExtremeXOS 12.4 or later to ExtremeXOS 12.3 or earlier, saved configurations from combo ports (copper or fiber) are silently ignored. Therefore, you need to reconfigure combo ports during such an upgrade or downgrade.
ExtremeXOS does not support turning off autonegotiation on the management port.
The following table lists the support for autonegotiation, speed, and duplex setting for the various types of ports.
| Port | Autonegotiation | Speed | Duplex |
|---|---|---|---|
| 100 Gbps | Off | 100000 Mbps | Full duplex |
| 10 Gbps | Off | 10000 Mbps | Full duplex |
| 40 Gbps | Off | 40000 Mbps | Full duplex |
| 1 Gbps fiber SFP | On (default)Off | 1000 Mbps | Full duplex |
| 100 FX SFP | On (default)Off | 100 Mbps | Full duplex |
| 10/100/1000 Mbps | On (default)Off | 10 Mbps100 Mbps | Full/half duplexFull/half duplex |
| 10/100 Mbps | On (default)Off | 10 Mbps100 Mbps | Full/half duplexFull/half duplex |
| 10 Gbps SFP+ | Off | 10000 Mbps | Full duplex |
Note
The following products do not support half-duplex operation: Summit X450-G2 and X460-G2.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 On, flow control is enabled.
With Extreme Networks devices, the 1 Gbps ports and the 10 Gbps ports implement flow control as follows: