交换机自动重启：abort at PC 0x0

[范爷]

C4900交换机自动重启，版本:cat4500e-ENTSERVICESK9-M
System returned to ROM by abort at PC 0x0
System image file is "bootflash:cat4500e-entservicesk9-mz.152-4.E4.bin"
Sushi Revision 11, Tatooine Revision 141, Forerunner Revision 1.83
Last reload reason: abort at PC 0x0
这边能具体是怎么原因呢？

[Rps-Cheers]

可能和如下bug有关系。
4900M crash 'IPP PRM pktParityInt interrupt' and redzone overwritten
CSCue11730
Description
Symptom:
Certain Catalyst 4500 switch crashes with 'System returned to ROM by abort at PC 0x0' in show version output. Crashdump reports "IPP PRM pktParityInt interrupt" error followed by a crash. Crash may indicate corrupted block redzone.
Conditions:
Possibly affected: 4900M, 4948E, Sup6E, Sup6L-E
High amounts of multicast traffic is the one trigger.
Another trigger is high amounts of replicated SPAN traffic. In order to see the crash due to SPAN, the SPAN destination ports must receive pauses frames from the remote side of the span destination port.
In most of the cases it's observed that any changes to the TenGigE interfaces (interface flapping, manual shut/no shut) preceded the crash. Parity error and Corrupted redzone blk is common across all such cases