Brocade Communications Systems 6650 manual Syntax no speed-duplex 10g-full 1000-full-master

Basic port parameter configuration 2

Downgrading the Brocade ICX 6650 front panel ports from 10 GbE to 1 GbE port speed

Ports 1/1/1 through 1/1/56 port speed can be downgraded from 10 GbE to 1 GbE port speed.

NOTE

Ports 1/1/33 through 1/1/56 can only be downgraded to 1 GbE port speed if you have downloaded the ICX6650-10G-LIC-POD license onto the device. If the license is not downloaded onto the device, the port is in an error-disabled state at 10 GbE port speed when attempting to downgrading the port to 1 GbE port speed.

1.Enter the speed-duplexcommand on a single, multiple, or interface range as shown in the following example.

Brocade(config)# interface ethernet 1/3/1 Brocade(config-if-e10000-1/3/1)# speed-duplex 1000-full-master

Syntax: [no] speed-duplex [10g-full 1000-full-master]

The 10g-fulloption enables the port speed to 10 Gbps.

The 1000-full-masteroption enables the port speed to 1 Gbps.

2. Enter the write memory command to save the configuration.

Ports 1/1/1 through 1/1/56 are downgraded to 1 Gbps speed. A system reload is not required. Use the no speed-duplexcommand to disable the port speed.

Enabling auto-negotiation maximum port speed advertisement and down-shift

NOTE

For optimal link operation, link ports on devices that do not support 803.3u must be configured with like parameters, such as speed (10,100,1000), duplex (half, full), MDI/MDIX, and Flow Control.

Maximum Port speed advertisement and Port speed down-shift are enhancements to the auto-negotiation feature, a mechanism for accommodating multi-speed network devices by automatically configuring the highest performance mode of inter-operation between two connected devices.

Port speed down-shiftenables Gbps copper ports on the Brocade device to establish a link at 1000 Mbps over a 4-pair wire when possible, or to down-shift to 100 Mbps if the medium is a 2-pair wire.

Maximum port speed advertisement enables you to configure an auto-negotiation maximum speed that Gbps copper ports on the Brocade device will advertise to the connected device. You can configure a port to advertise a maximum speed of either 100 Mbps or 10 Mbps. When the maximum port speed advertisement feature is configured on a port that is operating at 100 Mbps maximum speed, the port will advertise 10/100 Mbps capability to the connected device. Similarly, if a port is configured at 10 Mbps maximum speed, the port will advertise 10 Mbps capability to the connected device.

The port speed down-shift and maximum port speed advertisement features operate dynamically at the physical link layer between two connected network devices. They examine the cabling conditions and the physical capabilities of the remote link, then configure the speed of the link segment according to the highest physical-layer technology that both devices can accommodate.

Brocade ICX 6650 Administration Guide	33
53-1002600-01