301B: BIG-IP LTM Specialist: Maintain and Troubleshoot

By F5 · Question Mode

QuestionQ5

Identify and Resolve LTM Device Issues

Refer to the exhibit.

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An LTM Specialist has configured a virtual server to load balance to a pool of FTP servers. File transfers are failing. The virtual server is configured as follows:

ltm virtual ftp_vs \{  
    destination 10.10.1.103:ftp  
    ip-protocol tcp  
    mask 255.255.255.255  
    pool ftp_pool  
    profiles \{  
        tcp \{ \}  
    \}  
    vlans-disabled  
\}

Which change will resolve the problem?

Explanation

FTP uses a persistent control connection and a separate data connection. An FTP profile enables BIG-IP to process FTP control commands and manage the related active- or passive-mode data channel; a TCP-only virtual server does not provide that FTP-aware handling. F5 documents that the FTP profile supports both active and passive FTP data connections and is assigned to the virtual server.

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