Cisco WS-C3560E-48PD-SF Command Reference - Page 138
duplex
View all Cisco WS-C3560E-48PD-SF manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 138 highlights
duplex Chapter 2 Catalyst 3560 Switch Cisco IOS Commands duplex Use the duplex interface configuration command to specify the duplex mode of operation for a port. Use the no form of this command to return the port to its default value. duplex {auto | full | half} no duplex Syntax Description auto full half Enable automatic duplex configuration; port automatically detects whether it should run in full- or half-duplex mode, depending on the attached device mode. Enable full-duplex mode. Enable half-duplex mode (only for interfaces operating at 10 or 100 Mbps). You cannot configure half-duplex mode for interfaces operating at 1000 or 10,000 Mbps. Defaults The default is auto for Fast Ethernet and Gigabit Ethernet ports. The default is full for 100BASE-x (where -x is -BX, -FX, -FX-FE, and - LX) SFP modules. Duplex options are not supported on the 1000BASE-x (where -x is -BX, -CWDM, -LX, -SX, and -ZX) SFP modules. For information about which SFP modules are supported on your switch, see the product release notes. Command Modes Interface configuration Command History Release 12.1(19)EA1 12.1(20)SE Modification This command was introduced. Support for the half keyword was added for the 100BASE-FX SFP module. Usage Guidelines For Fast Ethernet ports, setting the port to auto has the same effect as specifying half if the attached device does not autonegotiate the duplex parameter. For Gigabit Ethernet ports, setting the port to auto has the same effect as specifying full if the attached device does not autonegotiate the duplex parameter. Note Half-duplex mode is supported on Gigabit Ethernet interfaces if the duplex mode is auto and the connected device is operating at half duplex. However, you cannot configure these interfaces to operate in half-duplex mode. 2-106 Catalyst 3560 Switch Command Reference 78-16405-05