two c6500 switches rebooted unexpectedly in 4 hours interval, and trunk ports down for 1.5 hours. While analyzing there is 0 bytes size of debug crashinfo files, so no root cause can be found. Is this known issue, or any bugs?
c6500switch#sh slavesup-bootflash:
-#- --length-- -----date/time------ path
1 80465924 Apr 14 2007 02:40:52 +00:00 s72033-ipservices_wan-mz.122-18.SXF8.bin
2 33554432 May 15 2008 03:36:40 +00:00 sea_log.dat
3 342747 May 6 2010 16:45:08 +00:00 crashinfo_20100506-164509-MDT
4 445005 Apr 30 2014 23:32:40 +00:00 crashinfo_20140430-233241-UTC
5 0 Apr 28 2016 23:29:02 +00:00 debuginfo_20160428-232903-UTC
397197312 bytes available (114827264 bytes used)
No root cause can be found because of 0 bytes size of data in this crash info files. The main concern is all trunk ports connected to these two c6500 switches were bouncing/flapping for one and half hours from neighbor devices, and this happened after reloaded the system. Any known bugs or known issue yet ? the code version is 15.0 experimental extended version supported to provider edge devices.
Appreciate in advance for any help.
