HPE FlexNetwork 7500 Series Network Management And Monitoring Command Reference Download

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capture-ring-buffer

filesize

kilobytes

: Rotates the packet file when the maximum file size is

reached. The

kilobytes

argument sets the maximum file size. The value range is 1 to 65536

kilobytes.

capture-ring-buffer

duration

seconds

: Rotates the packet file when the rotation interval expires.

The

seconds

argument sets the rotation interval. The value range is 1 to 2147483647 seconds.

capture-ring-buffer

files

numbers

: Sets the maximum number of packet files for file rotation, in the

range of 2 to 64. If a file rotation occurs after this limit is reached, the capture deletes the oldest file
and creates a new file to store packet data. If you do not set a limit, the number of packet files is
unlimited. This option must be used with the

autostop

filesize

kilobytes

capture-ring-buffer

filesize

kilobytes

, or

capture-ring-buffer

duration

seconds

option.

write

filepath

: Specifies the full path of the packet file to store captured packet data. The path must

be a case-sensitive string of up to 64 characters. The filename extension must be

.pcap

. You do not

need to create the file. If file rotation is disabled, the capture creates a packet file with the specified
file name. If file rotation is enabled, the capture automatically creates a packet file for each rotation,
and renames the file to include a sequence number and timestamp. The sequence number
increases by 1 for each file rotation. For example, set the file name to

a.pcap

. For the first rotation,

the capture will create a packet file named

a_00001_20140211034151.pcap

. For the second

rotation, the capture will create a packet file named

a_00002_20140211034207.pcap

. For more

information about setting a file path, see file system management in

Fundamentals Configuration

Guide

raw

: Displays packet contents in hexadecimal notation. If you do not specify this keyword, the

capture displays packet data in a human-readable format.

verbose

: Displays detailed information about captured packets.

brief

: Displays brief information about captured packets.

Usage guidelines

The device displays captured packet data in real time.

•

If you specify the

write

filepath

parameters without specifying the

raw

brief

, or

verbose

keyword, this command displays the number of captured packets.

•

If you do not specify any one of the

raw

brief

verbose

, and

write

filepath

parameters, this

command displays brief information about captured packets.

To stop the capture while it is capturing packets, press

Ctrl+C

Use

Table 91

when you configure the options for stopping the capture or rotating the file.

Table 91 Using the packet filter parameters

Purpose Options

Remarks

Stop capturing

•

Stop based on the capturing
duration:

autostop

duration

seconds

•

Stop based on the number of
captured packets:

limit-captured-frames

limit

•

Stop based on the number of file
rotations:

autostop

files

numbers

•

Stop based on the file size if file
rotation is disabled:

autostop filesize

kilobytes

The packet capture stops if any one of
the limits for the stop options is
reached. The packet capture also
stops if the file system's limit on the
number of files has been reached.

The

autostop filesize

option does not

stop the capture if file rotation is
enabled by the

autostop

files

capture-ring-buffer files

, or

capture-ring-buffer

filesize

option.

Rotate files