Service Manual
---------------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 trac to improve troubleshooting and system manageability. When you enable TCP
dump, it captures all the packets on the local CPU, as specied in the CLI.
You can save the trac 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 specied 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 trac.
CONFIGURATION mode
tcpdump cp [capture-duration time | filter expression | max-file-count value | packet-
count value | snap-length value | write-to path]
S-Series Debugging and Diagnostics
905