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Cisco SCE 8000 CLI Command Reference

Chapter 2 CLI Command Reference

flow-capture

Executes flow-capture operations.

flow-capture {start format cap file-name-prefix filename | stop}

Syntax Description

Command Default None

Command Modes Privileged EXEC

Command History This table includes the following release-specific history entries:

Usage Guidelines Flow capturing is a useful debugging capability that captures packets from the traffic stream in real time

and stores them for later analysis using a standard cap format. The classification of the traffic portion to

be captured is based on L4 attributes. The captured information is sent to a specified FTP destination. In

a system with two SCE 8000-SCM modules installed, a separate cap file is created by each SCE

8000-SCM module.

The following flow-capture operations are available:

• start—Starts recording.

• stop—Stops recording.

Note that traffic can be captured only when an application is loaded.

To perform a flow capture, follow these steps:

1. (Optional) Configure limits to the flow-capture operation using the flow-capture controllers

command. Limits prevent a negative impact on traffic processing.

You may skip this step and use the default controller values.

2. Configure an appropriate recording rule using the traffic-rule command. Assign the flow-capture

action to the rule (see traffic-rule).

filename Destination (FTP site path) where the cap file should be created, in the

format: ftp://username:password@ip_address/path/filename. (Do not

include the ".cap" file extension; it is appended automatically.)

In a system with two SCE 8000-SCM modules, which creates two capture

files, an indicator is appended to this prefix to indicate which SCE

8000-SCM module created the file. For example, if you assign the filename

“myCapFile”, the system creates myCapFile1.cap and myCapFile2.cap.

stop Stops recording.

Release Modification

3.5.0 This command was introduced.

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