Specifications

Chapter 6. IBM Virtual Fabric 10Gb Switch Module implementation 257
Additional commands and details for Layer 1 configuration can be found in the technical
documentation listed in 6.7, “More information” on page 284
Port link configuration
IBM switches include a factory default configuration that enables interfaces with the following
link settings:
򐂰 In the copper Gigabit Ethernet interfaces:
– Auto-negotiation is set.
– The speed for 10/100/1000 RJ45 (copper) Gigabit Ethernet interfaces is set to auto, so
that the interface can operate at 10 Mbps, 100 Mbps, or 1 Gbps. The link operates at
the highest possible speed, depending on the capabilities of the remote end. If the
speed is manually set to 1 Gbps, the duplex operation is automatically set to full.
– The duplex mode is set to auto;
– The flow control is set to none;
򐂰 In the fiber Gigabit Ethernet interfaces:
– No auto-negotiation is set.
– The speed is set to 1 Gbps.
– The duplex mode is set to full.
– The flow control is set to none.
򐂰 In the fiber 10 Gigabit Ethernet interfaces:
– No auto-negotiation is set.
– The speed is set to 10 Gbps.
– The duplex mode is set to full.
– The flow control is set to none.
All the ports used in this implementation are 10 Gbps (both external and internal) and thus
default to no auto-negotiation / full-duplex. There is no need for a speed or
duplex configuration.
The port configuration-related commands are listed here. To change the default link
parameters on Gigabit Ethernet interfaces, enter one of the following interface/portchannel
configuration level commands:
򐂰 Switch(config-if)#speed {10|100|1000|auto}
򐂰 Switch(config-if)#duplex {full|half|any}
򐂰 Switch(config-if)#[no] flowcontrol {receive|send|both}
򐂰 Switch(config-if)#[no] auto
To temporarily disable a port, run the following command:
Switch#interface port <Port alias or number> shutdown
Layer 1 verification
Run the commands described in this section to verify the Layer 1 operation of the switch,
including installed transceivers, link status, packet counters, and speed duplex.
Important: The default interface parameters are not listed in the configuration.