Reference Guide

1186 | Z-Series Debugging and Diagnostics
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Command Modes
CONFIGURATION
Command History
Usage Information
When you enable this command to allow the system to automatically upload application core dumps to
an FTP server, you will be requested to enter username and password. Use the username and password
of the FTP server where the core files are being moved. The password can be up to 15 alphanumeric
characters only; no special characters are allowed. After the password is entered, an FTP URL is
created with the credentials in the operating system. The CLI monitors application core dumps in the
unit. Any application core dumps that occur will be automatically uploaded to the FTP server.
Related
Commands
tcpdump
z
Enable a TCP dump for CPU bound traffic.
Syntax
tcpdump cp [capture-duration time | filter expression | max-file-count value | packet-count value |
snap-length value | write-to path]
To disable the TCP dump, use no tcpdump
Parameters
Version 8.3.11.1 Introduced on Z9000.
Version 8.3.10.1 Introduced on S4810.
logging coredump
Designate a server to upload kernel core-dumps.
capture-duration
Enter the time for packet capturing. The timer begins as soon as the
command is enabled.
Range: 20-9000 seconds
filter
Specify the packet that will be dumped. If no filter is entered, all packets
are dumped. Filter expressions usually consist of an id (name or num ber)
preceded by one or more qualifiers. There are three different kinds of
qualifier: type, direction, or protocol.
Enclose the filter option with double quotes: “port 20.”
Range: 1-100 characters.
max-file-count
Enter the maximum number of 1MB files.
The maximum file size for a TCP dump capture is 1MB. When a file
reaches 1MB, a new file is created, up to the specified number.
Range: 1-20
packet-count
Enter the number of packets to capture. The counter begins as soon as
the command is enabled.
Range: 10-150000
snap-length
Enter the number of bytes per packet to capture. Use this option to
reduce the size of the captured packets, to capture only the needed
headers and avoid rest of the data portion of the packet.
Range: 0-1200
write-to
Enter the location to save the captured packets.
Files can be saved to flash, to FTP, SCP, or TFTP
flash://filepath
ftp://userid:password@hostip/filepath
scp://userid:password@hostip/filepath
tftp://hostip/filepath.