Enables autonegotiation for the particular port type.
| port_list | Specifies one or more ports or slots and ports. |
| medium | Specifies the medium as either copper or fiber. Note: This parameter applies to combo ports. |
| speed | Specifies the port speed as either 10, 100, 1,000 (1 Gigabit), 2,500 (2.5 Gigabit), 5,000 (5 Gigabit), 10,000 (10 Gigabit), 25,000 (25 Gibabit), 40,000 (40 Gigabit), 50,000 (50 Gigabit), or 100,000 (100 Gigabit) Mbps ports. |
| duplex [half] | Specifies half duplex; transmitting and receiving data one direction at a time. |
| duplex [full] | Specifies full duplex; transmitting and receiving data at the same time. |
Auto on for 1G and 10G copper ports.
Auto off for 25G, 40G, 50G, and 100G ports.
The type of ports enabled for autonegotiation are 802.3u for 10/100 Mbps ports or 802.3z for gigabit Ethernet ports.
Flow control on gigabit Ethernet ports 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. See the ExtremeXOS 32.6.1 User Guide for more detailed information on flow control on Extreme Networks devices.
When configuring combo ports you can specify the medium as copper or fiber. If the medium is not specified for combination ports then the configuration is applied to the current primary medium. The current primary medium is displayed in the Media Primary column of the show ports configuration command output.
If there is a port configuration mismatch detected in the LAG, warning messages like the following may display:
WARNING: Port 9 is a trunk member port. It is recommended that all member ports configuration be consistent to avoid traffic imbalance across LAG members.
Note
The keyword medium is used to select the configuration medium for combination ports. If the 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.
Version 32.2 supports a 2.5G connection between ExtremeSwitching X435 uplink ports and 5520-24X front panel ports This feature also supports connecting a 5520-24X to another 5520-24X at 2.5G. Use of this feature requires 10G-SR-SFP300M-ET and 10G-LR-SFP10KM-ET 10G transceivers.
Note
For switches that do not support half-duplex (the ExtremeSwitching 5520-12MW-36W multi-rate ports), 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.Note
1G auto negotiation is not supported in 5420-YE and 5420-XE ports.Note
10G auto negotiation is supported in 5420 switches while using SFP+ passive copper cables.Note
2.5G support for X435 and 5520-24X is only available with auto negotiation disabled.The following example configures the switch to auto negotiate for port 2, with copper medium at a port speed of 100 Mbps at full duplex:
# configure ports 2 medium copper auto on speed 100 duplex full
This command was first available in ExtremeXOS 10.1.
The speed and duplex parameters were added in ExtremeXOS 11.6.
The medium parameter was added in ExtremeXOS 12.4.
This command is available on ExtremeSwitching X435, X440-G2, X450-G2, X460-G2, X465, X590, X620, X690, and X695 series switches.