I have a pair of PIX 525 set for failover. Since upgrading to 6.3(3), we have been having periodic failures in that the active device loses its running config, it transfers the default config to the standby. The proper config remains in flash and a reboot corrects problem. TAC has not been much help on this. This problem is erratic. Sometimes goes several days without a problem, sometimes a few hours.
Syslog does not show a thing. Device does not fail over but does write the default settings to the secondary. I am not familiar with sho crash. I will look at that the next time it occurs. Thanks for your assistance.
How did you verify that it looses it's running config? It can be because of number of reasons why FO is occuring. What does syslog shows? do you have show crash? these are the things you need to look at and search for possible bug.
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...