How to check the signature of the core dump.
The following command displays the vital information about the crash. You can verify the time of crash, Junos code that was running, and the reason for the core-dump.
Valid platforms: adpc/atlas/csbr/fpc160/gfpc/ggsnu/gsib/iq2/ixp425/mint/nic/phoenix/pfpc-pq2/rfeb/rfpc/sbr/scb/sfm/sfpc/sfpc2/spc/stfpc
(gdb) source /volume/build/junos/11.2/release/11.2R1.10/src/pfe/tools/gdb/pfe_ukern.gdb < Make sure you have the respective source file for the required Junos version.
(gdb) show_crash_info adpc
System Exception: Vector/Code 0x00100, Signal 11
Event occurred at: Oct 25 02:22:25.798840 < The time when the core-dump occurred
Juniper Embedded Microkernel Version 11.2R1.10 < Junos code that was running
Built by builder on 2011-07-29 07:47:05 UTC
Copyright (C) 1998-2011, Juniper Networks, Inc.
All rights reserved.
Reason string: "Critical Exception"
Context: Thread (TTP Receive)
DDR SDRAM Error: Multi-bit ECC error < This is an ECC error;so it is a hardware issue.
Source path to be used: