Specifications

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0XO(15.1(1)XO)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
diagnostic fpga soft-error recover
diagnostic fpga soft -error recover
To configure the SEU behavior, use the diagnostic fpga soft-error re cover command. To return to the
default setting, use the no form of this command.
diagnostic fpga soft-erro r recover {conservative | aggressive}
no diagnostic fpga soft-er ror recover
Syntax Description
Defaults A switch exhibits the defa ult SEU behavior when this co mmand is not configured. On redund ant
switches that have reached SSO, the default behavior is aggressive. In all other switches, the default
behavior is conse rvative.
Command Modes Global c onfig m ode
Usage Guidelines S EU events on the system FPGAs result in a potentially unstable switch. The only r ecovery 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. A lternatively, you m ight want to f orce an
immediate reload to avoid an instance where the switch crashes or drops traffic because of the SEU.
Examples This exampl e shows how to configure the SEU behavior as conservative:
Switch(config)# diagnostic fpga soft-error recover conservative
This example shows how to revert to the default behavior:
Switch(config)# no diagnositc fpga soft-error recover
conservative 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.
aggressive Dictates that the supervisor engine reloads immediately and automatically. A
crashdump is generated, allowing you to identify the SEU event as t he cause of
the reload.