这个bug，一般是设备4948 Crash的情况：
标志1：Error Message C4K_SUPERVISOR-2-SOFTERROR: memory inconsistency detected
标志2：Tatooine CRC Error
Bug细节：
Forerunner CRC error on 54SG/53SG3 triggers watchdog timeout crash
CSCtk75675
Symptom:
Switch can crash with an Watchdog NMI Vector 000 and CRC error.
Conditions:
1) Applies to Sup6-E, 4900M, Sup6L-E, 4948-E
2) IOS 12.2(50)SG OR 12.2(53)SG3 OR 12.2(54)SG only
3) "%C4K_SUPERVISOR-2-FPGASOFTERROR: Memory inconsistency detected" have
appeared on the switch followed by link flaps and pluggable insertion/removal on uplinks
4) On 4900M affected ports are baseboard ports
5) On 4948-E affected ports are all ports
Workaround:
1) Reload the switch as soon as "%C4K_SUPERVISOR-2-FPGASOFTERROR: Memory
inconsistency detected" messages appear.
2) Upgrade to 12.2(54)SG1 OR 12.2(53)SG4 (and higher) OR 15.0(02)SG (and
higher)
Further Problem Description:
"%C4K_SUPERVISOR-2-FPGASOFTERROR: Memory inconsistency detected" is due to a
legitimate parity error occurring on a device on the supervisor. The switch
should be reloaded at the next available maintenance window.
Switch can crash with an Watchdog NMI Vector 000 and CRC error.
Conditions:
1) Applies to Sup6-E, 4900M, Sup6L-E, 4948-E
2) IOS 12.2(50)SG OR 12.2(53)SG3 OR 12.2(54)SG only
3) "%C4K_SUPERVISOR-2-FPGASOFTERROR: Memory inconsistency detected" have
appeared on the switch followed by link flaps and pluggable insertion/removal on uplinks
4) On 4900M affected ports are baseboard ports
5) On 4948-E affected ports are all ports
Workaround:
1) Reload the switch as soon as "%C4K_SUPERVISOR-2-FPGASOFTERROR: Memory
inconsistency detected" messages appear.
2) Upgrade to 12.2(54)SG1 OR 12.2(53)SG4 (and higher) OR 15.0(02)SG (and
higher)
Further Problem Description:
"%C4K_SUPERVISOR-2-FPGASOFTERROR: Memory inconsistency detected" is due to a
legitimate parity error occurring on a device on the supervisor. The switch
should be reloaded at the next available maintenance window.
