Users Guide

Broadcom BT-FC-UG128-100
48
Emulex Boot for the Fibre Channel Protocol User Guide
4.7.4 Changing the Link Speed
NOTE: Supported link speeds are specific to the adapter model and the optics installed. Examples of LPe31000-series
and LPe32000-series adapters are shown in Figure 28.
The default link speed is Auto Select, which automatically selects the link speed based on the adapter model.
NOTE: The following information pertains to the link speed:
 In LPe12000-series adapters, the link speed setting is overwritten by the operating system FC driver and does
not take effect during a regular boot into the local operating system. Therefore, the link speed setting in the
Emulex LightPulse FC BIOS utility works for the actual boot, but is overwritten when the operating system
loads.
 When trunking is enabled, 8Gb/s link speed is not available because it is not supported. When the link speed
is changed on a trunk port, all physical links of the trunk port are forced. The new maximum aggregate link
speed is shown in the trunking selection after reboot.
 The maximum aggregate link speed is always shown even if some ports are inactive.
Possible link speeds (depending upon your adapter model):
 Auto Select – default
 2Gb/s
 4Gb/s
 8Gb/s
 16Gb/s
 32Gb/s
NOTE: Some older devices do not support auto-link speed detection; therefore, the link speed must be specified to match
the speed of those devices.
To change the adapter’s link speed, perform these steps:
1. From the main configuration menu (Figure 2), select Configure Advanced Firmware Parameters and press Enter.
The adapter firmware parameters configuration menu is displayed (Figure 21).
2. Select Link Speed Selection and press Enter.
The Link Speed menu (Figure 28) is displayed.