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Brocade Fabric OS Command Reference Manual Supporting Fabric OS v7.0.0 (April 2011)

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904 Fabric OS Command Reference
53-1001764-01
serDesTuneMode
22
serDesTuneMode
Configures and displays SerDes values on the Brocade FC8-16.
SYNOPSIS serdestunemode --set
serdestunemode --reset
serdestunemode --show
serdestunemode --help
DESCRIPTION Use this command to set the SerDes tuning mode for the Brocade FC8-16 port blade and to display the
configuration.
Enabling SerDes tuning mode is indicated under the following conditions:
• You have a Brocade FC8-16 blade installed in slot 2 or in slot 7 (or in both slots) in a DCX-4S
chassis with a CR4S-8 core blade.
• You notice increasing numbers of CRC errors on ports 2/0, 2/1, 2/4, 2/5, and 7/1.
Enabling SerDes tuning mode change the SerDes values on the above-mentioned ports in slots 2 and 7
along with their peer ports, provided the port blades are FC8-16s and the peer is a CR4S-8 core blade.
SerDes tuning mode changes take effect immediately and are saved persistently.
NOTES The execution of this command is subject to Virtual Fabric or Admin Domain restrictions that may be in
place. Refer to Chapter 1, "Using Fabric OS Commands" and Appendix A, "Command Availability" for
details.
This command is applicable only to Brocade FC8-16 blades in slots 2 and/or 7 of a DCX-4S chassis with
a CR4S-8 core blade.
OPERANDS This command has the following operands:
--set
Enables SerDes tuning mode and sets new SerDes values on FC8-16 blades in
slot 2 and 7 and on peer ports in the CR4S-8 core blade.
--reset
Disables SerDes tuning mode and resets SerDes values to default on FC8-16
blades in slots 2 and 7 and on peer ports in the CR4S-8 core blade.
--show
Indicates whether the SerDes tuning mode is enabled or disabled.
--help
Displays the command usage.
EXAMPLES To enable SerDes tuning mode on a DCX-4S chassis with two FC8-16 blades:
switch:admin> serdestunemode --set
serdestunemode is turned on
New serdes values set on slot = 2
New serdes values set on slot = 7
switch:admin> serdestunemode --show
serdestunemode is enabled