Users Guide

Example of Application Mini Core Dump Listings
Dell#dir
Directory of flash:
1 drw- 16384 Jan 01 1980 00:00:00 +00:00 .
2 drwx 1536 Sep 03 2009 16:51:02 +00:00 ..
3 drw- 512 Aug 07 2009 13:05:58 +00:00 TRACE_LOG_DIR
4 d--- 512 Aug 07 2009 13:06:00 +00:00 ADMIN_DIR
5 -rw- 8693 Sep 03 2009 16:50:56 +00:00 startup-config
6 -rw- 8693 Sep 03 2009 16:44:22 +00:00 startup-config.bak
7 -rw- 156 Aug 28 2009 16:16:10 +00:00 f10StkUnit0.mrtm.acore.mini.txt
8 -rw- 156 Aug 28 2009 17:17:24 +00:00 f10StkUnit0.vrrp.acore.mini.txt
9 -rw- 156 Aug 28 2009 18:25:18 +00:00 f10StkUnit0.sysd.acore.mini.txt
10 -rw- 156 Aug 28 2009 19:07:36 +00:00 f10StkUnit0.frrp.acore.mini.txt
11 -rw- 156 Aug 31 2009 16:18:50 +00:00 f10StkUnit2.sysd.acore.mini.txt
12 -rw- 156 Aug 29 2009 14:28:34 +00:00 f10StkUnit0.ipm1.acore.mini.txt
13 -rw- 156 Aug 31 2009 16:14:56 +00:00 f10StkUnit0.acl.acore.mini.txt
flash: 3104256 bytes total (2959872 bytes free)
Dell#
Example of a Mini Core Text File
VALID MAGIC
-----------------PANIC STRING -----------------
panic string is :<null>
---------------STACK TRACE START---------------
0035d60c <f10_save_mmu+0x120>:
00274f8c <panic+0x144>:
0024e2b0 <db_fncall+0x134>:
0024dee8 <db_command+0x258>:
0024d9c4 <db_command_loop+0xc4>:
002522b0 <db_trap+0x158>:
0026a8d0 <mi_switch+0x1b0>:
0026a00c <bpendtsleep>:
----------------STACK TRACE END----------------
--------------------FREE MEMORY---------------
uvmexp.free = 0x2312
Enabling TCP Dumps
A TCP dump captures CPU-bound control plane trac to improve troubleshooting and system manageability. When you enable TCP
dump, it captures all the packets on the local CPU, as specied in the CLI.
You can save the trac capture les to ash, FTP, SCP, or TFTP. The les saved on the ash are located in the ash://
TCP_DUMP_DIR/Tcpdump_<time_stamp_dir>/ directory and labeled tcpdump_*.pcap. There can be up to 20
Tcpdump_<time_stamp_dir> directories. The 21st le overwrites the oldest saved le. The maximum le size for a TCP dump
capture is 1MB. When a le reaches 1MB, a new le is created, up to the specied total number of les.
Maximize the number of packets recorded in a le by specifying the snap-length to capture the le headers only.
The tcpdump command has a nite run process. When you enable the tcpdump command, it runs until the capture-duration timer
and/or the packet-count counter threshold is met. If you do not set a threshold, the system uses a default of a 5 minute capture-
duration and/or a single 1k le as the stopping point for the dump.
You can use the capture-duration timer and the packet-count counter at the same time. The TCP dump stops when the rst of the
thresholds is met. That means that even if the duration timer is 9000 seconds, if the maximum le count parameter is met rst, the
dumps stop.
To enable a TCP dump, use the following command.
• Enable a TCP dump for CPU bound trac.
CONFIGURATION mode
984
S-Series Debugging and Diagnostics