Cisco Catalyst 4500 Series Configuration Manual page 252

diagnostic fpga soft-error recover
diagnostic fpga soft-error recover
To configure the SEU behavior, use the diagnostic fpga soft-error recover command. To return to the
default setting, use the no form of this command.
Syntax Description
conservative
aggressive
Command Default
A switch exhibits the default SEU behavior when this command is not configured. On redundant
switches that have reached SSO, the default behavior is aggressive. In all other switches, the default
behavior is conservative.
Command Modes
Global config mode
Command History Release
12.2(53)SG3,
12.2(54)SG,
15.0(2)SG
XE 3.1.1SG
12.2(53)SG6
15.0(2)SG2
XE 3.3.0SG
Usage Guidelines
SEU events on the system FPGAs result in a potentially unstable switch. The only recovery is to reload
the affected supervisor engine. However, SEU events may be harmless, so you might want to delay the
reload until a maintenance window, to avoid impacting users. Alternatively, you might want to force an
immediate reload to avoid an instance where the switch crashes or drops traffic because of the SEU.
Examples The following example shows how to configure the SEU behavior as conservative:
Switch(config)#
The following example shows how to revert to the default behavior:
Switch(config)#
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release XE 3.9.xE and 15.2(5)Ex
2-214
diagnostic fpga soft-error recover {conservative | aggressive}
no diagnostic fpga soft-error recover
Dictates that the supervisor engine does not reload, Rather it issues a console error
message once an hour.
You should reload the supervisor engine at the next maintenance window.
Dictates that the supervisor engine reloads immediately and automatically. A
crashdump is generated, allowing you to identify the SEU event as the cause of
the reload.
Modification
This command was provided on the Catalyst 4500 series switch.
Support for the conservative option was added.
diagnostic fpga soft-error recover conservative
no diagnositc fpga soft-error recover
Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
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